Huawei HCIP Routing & Switching H12-222_V2.5 Exam Updated Questions

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Huawei HCIP Routing & Switching H12-222_V2.5 exam latest questions have been updated, which are valid in the preparation. There are 60 questions in real Huawei H12-222_V2.5 exam, and you have 90 minutes to complete all the questions. H12-222_V2.5 exam languages are Chinese, English and Chinese. Free Huawei H12-222_V2.5 exam updated questions are below.

Page 1 of 14

1. MPLS technology uses labels instead of ip forwarding. When MPAS runs on Ethernet, which encapsulation mode does it use?

Package mode

Frame mode

Transmission mode

Channel mode

2. Which of the following description of MPLS is wrong? (Multiple choice)

The corresponding network connection must be established before transmitting packets with IPLS tags

The router can aggregate multiple IP streams together according to the forwarding target to form a forwarding equivalence class (FEC)

MPLS supports various network layer protocols, and packets with MPLS labels must be encapsulated in frames for transmission

MPLS replaces IP forwarding with label switching

MPLS "label" is the unique identifier of a specific group in each subnet

3. BFD can detect the connectivity of directly connected links, but cannot detect the connectivity of multi-hop links across routers.

TRUE

FALSE

4. VXLAN uses MAC in TCP encapsulation to extend the Layer 2 network, and encapsulates Ethernet packets on IP packets to achieve VXLAN network intercommunication.

TRUE

FALSE

5. What is the version numbers of BFD supported by the VRP version?

version1

version2

version3

version4

6. Which of the following are the three basic characteristics of SDN's network architecture?

Separation of control, centralized control, open interface

Separation of control, decentralized control, open interface

Centralized transfer control, centralized control, open interface

Separate transfer and control, centralized control, closed interface

7. Which of the following descriptions about the S field in the MPLS packet header is correct? (Multiple choice)

The S bit exists in every MPLS packet header.

The S bit has only 1 bit in the frame mode and 2 bits in the cell mode.

It is used to mark whether there are other labels after this label, 1 means yes, 0 means no.

It is used to mark whether there are other labels after this label, 0 means yes, 1 means no.

8. VXLAN users can access the internet through the VXLAN interface.

True

False

9. The administrator has configured the router as shown in the figure. At the same time, the administrator wants to assign a shorter lease period to the DHCP address. Which of the following commands should be used?

文本, 信件

描述已自动生成

lease day 0 hour 10

lease 24

dhcp select relay

lease 0

10. In response to different needs, the DHCP server supports multiple types of address allocation strategies, not including:

Automatic allocation method

Dynamic allocation method

Duplicate allocation method

Manual allocation method

Page 2 of 14

11. Which descriptions are correct about the label concept in MPLS? (Multiple choice)

Some tags are local identifiers, and some tags are global identifiers

On a device, a label can only represent one FEC

On one device, there may be multiple incoming tags corresponding to one FEC

The label is used to uniquely identify the FEC to which a group belongs

12. During the establishment of an LDP session, the active party will first send initialization information for parameter negotiation. If the passive party does not accept the negotiation parameters, what will it send?

Error Notificationg Message

Hello Keepalive

Message

Initialization

13. Which parts of SNMP consist of? (Multiple choice)

Managed objects

Management Information Base

Agent process

Network Management System

14. Qos service model includes: (Multiple Choice)

Best-EffortService model

Integrated Service. Model

Differentiated Service model

FIFO Service model

15. With the development of ASIC technology, MPLS no longer has obvious advantages in improving forwarding speed, but due to which of the following reasons, MPLS is still widely used? (Multiple choice)

MPLS combines the powerful Layer 3 routing function of the IP network with the efficient forwarding mechanism of the traditional Layer 2 network.

MPLS supports multi-layer labels and is connection-oriented.

TE (Traffic Engineering), VPN (Virtual Private Network), Qos (Quality of Service) and other applications provide better solutions.

MPLS is not easy to achieve seamless integration of IP, ATM, frame relay and other Layer 2 networks.

16. LSR reserves the received labels, and there are many ways to reserve them, then the following about LDP label reservation-free way, which is correct? (Multiple choice)

Keep all labels sent by neighbors

Need more memory and label space

Only keep labels from next-hop neighbors, discard all labels sent by non-next-hop neighbors

Save memory and label space

When the IP route converges and the next hop changes, the LSP convergence time is reduced

17. Regarding the description of the traditional IP network when forwarding data, which of the following is correct? (Multiple choice)

Traditional IP forwarding is based on connection, and the efficiency is relatively low

Traditional IP network calculates the optimal path based on IGP METRIC

All routers in a traditional IP network need to know the route or default route of the entire network

Traditional IP forwarding uses hop-by-hop transmission

Traditional IP network cannot provide good qos guarantee

18. For data with AF DSCP marks, they should be given a certain amount of guaranteed bandwidth. If there is unused bandwidth, they cannot occupy these additional bandwidths.

TRUE

FALSE

19. The routing protocol can detect the fault through the Hello message, so BFD is not required.

TRUE

FALSE

20. When traffic classification is performed, certain rules are used to identify messages that meet certain characteristics, and messages with different characteristics can enjoy different services.

Therefore, because the classification rules are based on different information, traffic classification can be divided into simple flow classification and complex flow classification.

True

False

Page 3 of 14

21. Regarding the description of the eSight physical topology monitoring function, which of the following is correct? (Multiple choice)

Graphically display the layout and status of network elements, subnets and links

Accurately visually monitor the operation status of the entire network

Systematic display of the network structure of the entire network and the business relationship between network entities

Entrance to the entire network monitoring to achieve efficient operation and maintenance for customers

22. In the alarm management interface of .e Sight, when an alarm has a green background, it means that the alarm has been confirmed.

TRUE

FALSE

23. In order to avoid the TCP global synchronization phenomenon, the congestion avoidance mechanisms that can be used are: (Multiple Choice)

RED

WRED

Tail-Drop

WFQ

24. As shown in the figure, there is a message containing three-layer label headers. Please select the corresponding values (in decimal) of the X, Y, and Z fields in the figure.

图示

描述已自动生成

Select and Place:

图片包含条形图

描述已自动生成

25. Which of the following values can be set for the security level of the customized security zone of the USG series firewall? (Multiple Choice)

150

100

26. There are different ways of MPLS encapsulation. Which one of the following options says about the encapsulation method is correct? (Multiple choice)

MPLS encapsulation has frame mode and cell mode

Ehernet and PPP use frame mode encapsulation

ATM uses cell mode encapsulation

In cell mode encapsulation, if a sentence in the message carries an MPLS Header, the first cell will retain the MPLS Header for forwarding.

27. For IPv4 packets, we can perform simple flow classification according to what information in the packet? (Multiple Choice)

DSCP information

IP Precedence Information

Traffic Class information

802.1P information

28. Configure the remote port mirroring function on the Huawei router to realize the remote port mirroring message, which can be transmitted to the monitoring equipment through the three-layer IP network, the command is:

mirror-sever destination-IP 10.1.0.1 source-ip 192.168.1.1

monitor-sever destination-ip10.1.0.1 source-ip 192.168.1.1

Abserve-sever destination-IP 10.1.0.1 source-ip 192.168.1.1

sever destination-IP 10.1.0 1 source-ip 192.168.1.1

29. When the stateful inspection firewall forwards subsequent data packets (not the first packet), which of the following is the main basis?

MAC address table

Session table

Route table

FIB table

30. Which of the following description belong to the process of establishing an LSP using the downstream independent label distribution method and the ordered label control method? (Multiple choice)

The edge node finds that there is a new destination address that does not belong to any existing FEC in its routing table, and it will not create a new FEC corresponding to it.

The establishment process of LSP is actually to bind FEC and label, and advertise this binding to the adjacent LSR on the LSP

If the egress node has a label available for allocation, it will allocate a label for the FEC and actively send a label mapping message to the upstream.

When the node LSR receives the label mapping message, it needs to add a corresponding entry in the label forwarding table

Page 4 of 14

31. The packet filtering firewall provides support for detecting and filtering fragmented packets.

Which of the following are the fragmented packets that can be filtered by the packet filtering firewall? (Multiple choice)

The first fragmented message

Subsequent fragmented message

Forged ICMP error message

Non-fragmented messages

32. Compared with traffic policing, traffic shaping introduces queues for buffering traffic exceeding the limit.

Regarding traffic shaping, which of the following description is incorrect?

Compared with traffic policing, traffic shaping has better anti-burst capabilities.

Traffic shaping allows packets to be sent out at a relatively uniform speed.

Due to the introduction of queues, when congestion occurs, the delay of messages increases relatively

Voice services are more suitable for traffic shaping rather than traffic policing

33. The main technical genres of SDN advocate that SDN adopts a layered open architecture, so what is used to advocate, define a centralized architecture and Openflow?

ONF

IEIF

ETSI

ITUa

34. Physical interface total rate limit (check LR) can limit the total rate of messages (including emergency messages) occurring on the interface on a physical interface.

True

False

35. As a network resource automation control system, Agile Controller can provide a unified policy engine, implement unified access policies throughout the organization, and implement access based on user identity, access time, access address, access type, and access method (5H1W for short) ) Authentication and authorization.

TRUE

FALSE

36. Which of the following are the main goals of network management? (Multiple Choice)

Ensure that network users receive the expected network service quality and technical service information.

Reduce equipment relocation costs.

Reduce the service life of network equipment and extend the service cycle.

Help network engineers face complex network data, and ensure that the data can be quickly and comprehensively presented to users.

37. The online user status check function in eSight can check whether there are unauthorized users to improve the security monitoring capabilities of the network management.

TRUE

FALSE

38. Assuming that the outbound port traffic is congested, message A and message B are buffered in their respective queues, message B belongs to the PQ queue, and message A belongs to the WFQ queue. Then which kind of message will be dispatched first?

Message A takes precedence

Message B takes precedence

Go out at the same time

All are discarded

39. RouterA and RouterB belong to a VRRP group, RouteA has a priority of 120 and RoaterB has a priority of 100. The virtual IP address of VRID is the same as the interface address of RouterB.

When the network is running well, the master device in this VRRP group is ().

RouterA

RouterB

40. Information security technology issues are mainly technical issues. Only through the introduction of the latest technology and the deployment of the highest performance equipment, and then the security work can be done well.

TRUE

FALSE

Page 5 of 14

41. Which of the following is the default interval for sending BFD detection packets?

100ms

1000ms

10s

42. The three elements of the Servermap table of the USG series firewalls do not include:

Destination IP

Destination port number

Agreement number

Source IP

43. Which of the following description is wrong about the method of establishing a BFD session?

When dynamically establishing a BFD session, dynamically assign a local identifier

Statically configuring a BFD session refers to manually configuring BFD session parameters through the command line, including local identifiers and remote identifiers, etc.

The system distinguishes between static BFD sessions and dynamic BFD sessions by dividing the identifier area

BFD sessions can only be established dynamically

44. Regarding the description of the VRRP master device, which is wrong?

Periodically send VRRP packets

Respond to the ARP request for the virtual IP address with the virtual MAC address

Forward IP packets whose destination MAC address is a virtual MAC address

Even if the router has become the master, it will be preempted by the backup router with high priority

45. In a stateful inspection firewall, when the stateful inspection mechanism is turned on, when the second packet (SYN+ACK) of the three-way handshake arrives at the firewall, if there is no corresponding session table on the firewall, which is correct?

If the firewall security policy allows packets to pass, the packets can pass through the firewall

If the firewall security policy allows packets to pass, create a session table

In the default state, after the state function is turned off, and the permission policy is configured then can pass

The message must pass through the firewall and establish a session table

46. The central content of congestion management is to determine the order of data packet processing by customizing the scheduling strategy.

TRUE

FALSE

47. When congestion occurs, which indicators of QOS are usually affected? (Multiple choice)

Transmission delay

Transmission jitter

Transmission bandwidth

Transmission distance

48. The path that an IP packet traverses in the MPLS network is called LSP (Label Swithed Path). This path is determined and established through various protocols before the packet is forwarded. The packet will be passed on a specific LSP.

TRUE

FALSE

49. ASPF (Application Specific Packet Filter) is a packet filter based on the application layer. It checks the application layer protocol information and monitors the connected application layer protocol status, and implements a special security mechanism through the Server MAP table.

Regarding the statement about ASPF and Server map table, which of the following is wrong?

ASPF monitors the messages in the communication process.

ASPF dynamically creates and deletes filtering rules.

ASPF uses Ser; ermak table to dynamically allow multi-channel protocol data to pass.

The five-tuple Server map table entry implements a function similar to the session table.

50. The DHCP server can use different address ranges to assign clients. Which of the following descriptions are correct about the assigned addresses? (Multiple choice)

It can be the IP address that the client used to conflict with other clients

It can be an IP address that is statically bound to the client's MAC address in the database of the DHCP server

It can be the IP address used by the client, that is, the address of the Requested IP Addr Option (Requested IP Addr Option) in the DHCP_DISCOVER message sent by the client

Regarding the IP addresses that the DHCP server has queried over the lease period and conflicts, if an available IP address is found, it can be assigned

In the DHCP address pool, sequentially search for the IP addresses available for allocation, that is, the IP address found first

Page 6 of 14

51. There are many types of LDP messages. Which of the following functions can be achieved by session message? (Multiple choice)

Monitor the integrity of the TCP connection of the LDP session

Terminate the unfinished Label Request Message

Release label

Negotiate parameters during LDP session establishment

52. Which of the description regarding the application scenario of Agile Controller's admission control technology is wrong?

In MAC authentication, the user terminal uses the MAC address as the identity credential to go to the authentication server for authentication. MAC address authentication is mainly used for authentication of dumb terminal devices such as phones and printers.

802.1X authentication uses EAP authentication protocol to realize the exchange of authentication information between the client, the device and the authentication server

Portal authentication is also called WEB authentication. Users can enter the user account information through the WEB authentication page to realize the authentication of the terminal user's identity.

SACG certification adopts USG firewall to hang on the router and very strong switch, and control terminal access through manual interface

53. Regarding the description about business accompanying of Agile Controller, which of the following is correct? (Multiple Choice)

The administrator should select the appropriate user authentication point and policy enforcement point when configuring the business accompanying.

In business accompanying, you can define user-class security groups. The members of this part of the security group mainly refer to a static network segment or server resource of the network. Their IP needs to be manually bound to the security group.

In business accompanying, a matrix relationship is used to describe the access authority relationship from one security group (such as a user) to another security group (such as a server).

In business accompanying, by specifying the forwarding priority of the security group to which certain VIP users belong, the network experience of these people is guaranteed.

54. The following description about Huawei eSight network management software, which is wrong?

Wizard installation, lightweight system

Using the C/S architecture, you can directly use the browser to access the network anytime and anywhere.

Provide corresponding solutions to different customers

Support unified management of equipment from multiple vendors

55. MPLS is a label forwarding technology. Which is wrong about the following description of MPLS?

Adopt a connection-oriented control plane and a connectionless data plane.

The control plane realizes the transmission of routing information and the distribution of labels, and the data plane realizes the message transmission on the label forwarding path of the resume.

The switch in the MPLS domain only needs to forward according to the label encapsulated outside the IP header

For traditional IP forwarding, MPLS label forwarding greatly improves the efficiency of data forwarding

56. Complex flow classification refers to the classification of messages based on information such as quintuples (source/destination address, source/destination port number, protocol type), etc., and is usually applied at the core of the network.

True

False

57. A VRRP virtual router is configured with a VRID of 3 and a virtual IP address of 100.1.1.10, so what is the virtual MAC address?

00 － 00 － 5E － 00 － 01 － 64

00 － 00 － 5E － 00 － 01 － 03

01 － 00 － 5E － 00 － 01 － 64

01 － 00 － 5E － 00 － 01 － 03

58. As shown in the figure, the stateful inspection firewall will forward the message because the message conforms to the firewall's session state.

图片包含图示

描述已自动生成

TRUE

FALSE

59. Which of the following are the working modes under the firewall interface? (Multiple choice)

Exchange mode

Routing mode

Transmission mode

Transparent mode

60. The following statements about different types of firewalls, which are wrong?

The packet filtering firewall performs ACL matching check for each packet passing through the firewall

Stateful inspection firewall detachment did not hit the first packet of the session for security policy inspection

The stateful inspection firewall needs to be configured with security policies in both the "go" and "back" directions of packets.

Proxy firewall proxy services between internal network and external network users

Page 7 of 14

61. Which of the following statements is wrong?

LSP is divided into static LSP and dynamic LS

The static LSP is manually configured by the administrator, and the dynamic LSP is dynamically established using the routing protocol and the label distribution protocol

The principle to be followed for manual label allocation is: the value of the outgoing label of the upstream node is the value of the incoming label of the downstream node

The LSP established by statically assigning labels can also be dynamically adjusted according to network topology changes, without the intervention of the administrator

Dynamic LSP is dynamically established through label distribution protocols, such as MP-BGP, RSVP-TE, LDP

62. In port queue scheduling, which queue has no fairness, and different flows cannot be isolated from each other?

CQ+WFQ

PQ+WFQ

FIFO

WRR

63. What are the situations in which packet loss may occur? (Multiple choice)

Packet loss occurs during receiving

Packet loss occurs during transmission

Packet loss occurs in the queue

Packet loss may be caused by the CPU being busy and unable to process packets

64. Rapid detection technology can detect communication failures with neighboring equipment as early as possible, so that the system can take measures in time to ensure uninterrupted business.

True

False

65. The Integrated Service model releases bandwidth resources when there is no traffic, and the resource utilization is high.

TRUE

FALSE

66. In the USG series firewall, what is the security level of the DMZ area?

100

67. The flow mirroring port can realize the function of transmitting the packets of a specific service flow on the mirroring port to the monitoring equipment for analysis and monitoring.

True

False

68. What types of protocols can eSight use to discover network elements? (Multiple choice)

SNMP protocol

netconf protocol

Telnet protocol

ICMP protocol

69. The SDN controller can intelligently adjust the flow path according to the network status to achieve the purpose of increasing the throughput of the entire network.

True

False

70. Which of the following description about the terminal security management characteristics of AGILE CONTROLLER is correct? (Multiple choice)

One-click repair, reducing terminal management and maintenance costs

Only standard software is allowed to be installed to realize desktop office standardization

Control the way of terminal leakage, through access control to ensure that the terminal is forced to install the client and meet the security requirements

Prohibit the installation of non-standard software to reduce the risk of virus infection

Page 8 of 14

71. The methods of data collection are mainly divided into: (Multiple Choice)

Spectroscope physical collection

Collect through port mirroring

NMS centralized collection

Automatic collection

72. In the firewall inter-domain security policy, which of the following data flows is not in the outbound direction?

Data flow from the DMZ zone to the untrust zone

Data flow from the trust zone to the DMZ zone

Data flow from trust zone to untrust zone

Data flow from DMZ area to local area

73. Which of the following is not included in the limitations of traditional access networks?

The network protocol is complex to implement, and the operation and maintenance is difficult

The ability to adjust the flow path is not flexible enough

The actual speed of new network business is slow

The implementation mechanism of equipment from different manufacturers is similar, and the operating commands are small and easy to operate.

74. The traffic shaping technology temporarily caches data that exceeds the forwarding threshold. For the data in the cache, congestion management technology can be used to discard data packets from the cache queue in advance to prevent the cache queue from being full.

TRUE

FASLE

75. BFD is just a universal fast detection technology, which can realize fast switching function by itself, and it is not necessary to use it with other fast switching technologies.

TRUE

FALSE

76. In VRRP, when the device status changes to Master, it will immediately send a gratuitous ARP to refresh the MAC table entries of the downstream device, thereby directing the user's traffic to this device.

Ture

False

77. Different message types in DHCP realize different functions, among which the role of DHCP OFFER message is ___.

Broadcast by the client to find available servers

The server responds to the client's DHCP DISCOVER message and specifies the configuration parameters of the response

A client sends to the server to request configuration parameters or request configuration confirmation or lease renewal

There is a server sent to the client, and the configuration parameters in the message include information such as IP address

78. Regarding the label space of MPLS, which description is wrong?

16-1023 are static LSP and static CR-LSP sharing label space

1024 or more is the label space shared by dynamic signaling protocols such as LDP, RSVP-TE, MP-BGP, etc.

The last hop receives a packet with a label control of 0 and directly forwards it through IP or forwards the next layer of label

When the penultimate hop LSR performs label switching, if it finds that the exchanged label is 3, it will eject the label and send the message to the last hop.

79. Which of the following types of firewalls have the highest forwarding efficiency when processing data streams other than the first packet?

Packet filtering firewall

Proxy firewall

Stateful inspection firewall

Software firewall

80. If you need to configure DHCP Replay, which of the following steps need to be included? (Multiple choice)

Configure the name of the DHCP server group

Configure the DHCP server IP address in the DHCP server group

Configure the interface number and IP address of the interface to enable the DHCP replay function

Configure option82 insert function

Page 9 of 14

81. The definition of CAPEX is:

Cost expenditure

Capital expenditure

One-time expenditure

Daily expenses

82. In QOS, the main difference between Differentiated Service and Integrated Service is: (Multiple Choice)

Differentiated Service, the services obtained by packets to different destinations are different. In

Differentiated Service, the services obtained by groups from different sources are different.

There is no need to maintain status information for each flow in Differentiated Service.

Differentiated Service is suitable for application on large-scale backbone networks.

83. The BFD mechanism uses TCP to establish a connection, and its destination port number is 3784.

True

False

84. In the admission control scenario of the Agile Controller, which of the following options about the roles of the RAD IUS server and client is correct?

The Agile Controller integrates all the functions of the RADIUS server and client.

The Agile Controller acts as a RADIUS server, and the user terminal acts as a RADIUS client.

The authentication device (such as an 802.1X switch) acts as a RADIUS server, and the user terminal acts as a RADIUS client.

The Agile Controller acts as a RADIUS server and an authentication device (such as an 802.1X switch) as a RADIUS client.

85. Mirroring requires that the data collected are real-time, true, and reliable.

TRUE

FALSE

86. If two devices are connected, one device supports the BFD detection function, but the other device does not support the BFD detection function, then the device that supports the BFD detection function can use which feature of BFD to realize the link detection?

Quick handshake

Interface status linkage

One-arm echo

Two-way detection

87. The length of the MPLS header is 32 bits, including a label of 20 bits, which is used for packet forwarding; dxp with a length of 32 bits is usually used to carry the priority of IP packets; a label S at the bottom of the stack with a length of 1 bit is used to indicate release Is the last label (MPLS labels can be nested in multiple layers)

The function is similar to the TTL of the IP header, which is used to prevent packet loops.

Mainly used for label management control

Used to control the upstream equipment during label distribution

Restrictions on LSR

88. The configuration command of the NAT address pool is as follows, the meaning of the no-pat parameter is: nat address-group 1 section 0 202.202.168.10 202.202 168.20 nat-mode no-pat

No address translation

Perform port multiplexing

Do not convert the source port

Do not convert the destination port

89. Regarding the default security zones Trustt and untrust of firewalls, which of the following statement is correct? (Multiple Choice)

The direction of access from the Trust zone to the untrust zone is the outboud direction.

Access the outboud direction from the trust zone.

The security level of Trust is 85.

The security level of Untrust is 50.

90. The Round Robin scheduling method is polled and sent according to the number of bytes defined by each queue, and the bandwidth ratio occupied by each queue is equal to the ratio of the number of bytes defined in this queue to the sum of the number of bytes in all queues.

True

False

Page 10 of 14

91. The MAC address of a certain PC is 5489-98FB 65D8, and the administrator wants this PC to obtain the designated IP address 192.168.1.11/24 from the DHCP server. So which command should be configured by the administrator?

dhcp server static-bind ip-address 192.168.1.11 mac-address 5489-98FB-65D8

dhcp static-bind ip-address 192.168.1.11 mac-address 5489-98FB-65D8

dhcp server static-bind ip-address 192.168.1.11 255.255.255.0 mac-address 5489-98FB-65D8

dhcp static-bind ip-address 192.168. 1.11 24 mac-address 5489-98FB-65D8

92. VXLAN is based on UDP encapsulation, encapsulating Ethernet data frames on UDP in IP packets, so it is called MAC in UDP encapsulation.

TRUE

FALSE

93. VXLAN uses VNI to distinguish tenants. A tenant can have one or more VNIs. The length of VNI is 24 bits, so VXLAN supports up to 12M tenants.

TRUE

FALSE

94. Regarding BGP/MPLS IP VPN routing interaction, which of the following description is wrong?

The egress PE can send IPv4 routes to the remote CE through BGP, IGP or static routing.

The exchange between PE and CE is IPv4 routing information.

After the egress PE receives the VPNv4 route advertised by the ingress PE, it filters the VPNv4 route according to the RT attribute carried by the route.

The ingress PE changes the IPv4 route received from the CE to the VPNv4 route, and saves it according to different VPN instances.

95. The eSight application platform is in B/S mode and supports simultaneous access by multiple browsers.

TRUE

FALSE

96. The DHCP server, which is responsible for the client IP address allocation. When configuring the DHCP Server, which of the following steps need to be included? (Multiple choice)

Enable DHCP function globally

Configure option82 of DHCP

When using the DHCP server mode of the global address pool, configure the global address pool

When using the DHCP server mode of the port address pool, configure the port address pool

97. During the establishment of the LDP session, the openSent state will be experienced. When the openSent state receives the Initialization message and then sends the keepAlive Message, its state will migrate to:

Initialization

Openrec

operational

Non-existent

98. The single-arm echo function of BFD can be used for two devices that are not directly connected.

TRUE

FALSE

99. The command to configure VRRP preemption delay is:

vrrp vrid 1 preempt -timer 20

vrrp vrid 1 preempt-mode timer delay 20

vrrp vrid 1 timer delay 20

vrrp vrid 1 preempt-delay 20

100. The information security system is the interaction of (), () and ().

Equipment

Technology

Personnel

Management

Page 11 of 14

101. As shown in the figure is an IP packet header, which of the following statements is correct?

文本

描述已自动生成

The protocol number is 51, which means that the packet after the IP Header is the AH header.

The protocol number is 51, which means that the packet after the IP Header is the ESP header.

The message is an IPsec VPI message, and the data part of the message is encrypted.

The message must be an IPsec VPN message encapsulated by AH only.

102. Regarding the establishment of BFD session, which of the following is wrong?

BFD sessions can only be established in a stateful way

Static configuration of a BFD session refers to the use of command lines, manual configuration, and BFD session parameters, including local identifiers and remote identifiers.

When a BFD session is statically established, the local identifier is dynamically allocated

The system distinguishes between static BFD sessions and dynamic BFD sessions by dividing the identifier area.

103. WRR (Weight Round Robin) evolved on the basis of RR (Round Robin). It performs round-robin scheduling among queues, and schedules the packet flow in each queue according to the weight of each queue.

TRUE

FALSE

104. Regarding BGP/MPLS IP VPN data forwarding, which of the following description is wrong?

The inner label during data forwarding is allocated by MP-BG

When data is transmitted on the BGP/MNPLS IP VPN backbone network, it always carries two layers of labels.

The data sent by the PE to the CE is an IPv4 packet.

The outer label during data forwarding can be allocated by LD

105. There is a TTL field in the MPLS label message. In the network as shown in the figure, the TTL in the MPLS message sent by the SWB to the SWC and the TTL in the IP message are respectively:

255, 9

254, 10

10, 10

254, 9

106. When configuring the RADLUS server template on a Huawei switch, which of the following is the optional configuration parameters?

Authentication server address and port

RADLUS automatically detects users

Accounting server address and port

shared-key

107. Which descriptions are correct about the characteristics of high-availability networks? (Multiple choice)

Can recover quickly after failure

Once a failure occurs, the business can only be restored through manual intervention

No failure

Cannot fail frequently

108. During the operation of the DHCP protocol, the process from the client application to the acquisition of an IP address is:

①→②→③→④

①→④→③→②

③→②→①→④

③→④→①→②

109. Regarding the PC to obtain an address from the DHCP Server, which of the following description about the command used is correct? (Multiple choice)

Use the ipconfig/release command in the Windows 7/windows XP environment of the user's PC to actively release the IP address. At this time, the user's PC sends a DHCPRELEASE message to the DHCP server.

In the Windows 7/windows XP environment of the user's PC, use the ipconfig/renew command to apply for a new 1P address. At this time, the PC is used to send a DHCP RENEW message to the DHCP server.

Use the ipconfig/renew command to apply for a new 1P address in the Windows 7/windows XP environment of the user's P

At this time, the user's PC sends a DHCPDISCOVER message to the DHCP server.

Use the ipconfig/release command in the windows 7/windows XP environment of the user's PC to actively release the IP address. At this time, the user's PC sends a DHCPREQUEST message to the DHCP server.

110. Network equipment running the SNMP protocol can take the initiative to report alarm information so that network administrators can find faults in time.

TRUE

FALSE

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111. There are hosts in a private network that need to access the Internet. To achieve this requirement, which of the following configurations should be done by the administrator on the edge firewall of the network? (Multiple choice)

STP

DHCP

Default routing

NAT

112. In the alarm management function of esight, which of the following four types are the alarm levels divided into?

Urgent, minor, general, reminder

Urgent, important, major, reminder

Urgent, important, warning, reminder

Urgent, important, minor, reminder

113. Which of the following description of "message marking" is incorrect?

The QoS information field of the message can be marked

DSCP and IP Precedence information of IP packets can be marked

The 802.1P information of VLAN packets can be tagged

The MAC of the message can be marked

114. In the MPLS network, the switch assigns labels. Regarding the mode of label distribution, which of the following is correct?

The downstream LSR can determine the label assignment to a specific FEC, and then notify the upstream LSR

Downstream on-demand DOD means that for a specific FEC, the LSR does not need to request a message from the upstream active label to perform label allocation and distribution.

The downstream allocation method means that for a specific FEC, the label allocation and distribution can only be performed after the LSR obtains the label request message.

The label distribution mode of the upstream LSR and the downstream LSR with a label distribution adjacency relationship may be inconsistent

115. In the MPLS label, if the label value assigned by the egress node to the penultimate hop node is 0, the penultimate hop LSR needs to normally push the label with the value 0 onto the top of the packet label value and forward it to the last hop. When the last hop finds that the label value carried in the packet is 0, the label is ejected. The 0 tag is only valid when it appears at the bottom of the stack.

True

False

116. Under the trend of mobilization, which of the following are the new requirements that the enterprises put forward to traditional networks? (Multiple choice)

Unified wired and wireless management

Consistent business experience anytime, anywhere

Strict hierarchical networking

Support rapid deployment of mobile applications

117. The hardware detection mechanism in the SDH transmission network can quickly find faults and is applicable to all media.

TRUE

FALSE

118. During the operation of DHCP, multiple message types will be exchanged, so which of the following messages are not sent from the client to the server?

DHCP NAK

DHCP REQUEST

DHCP DISCOVER

DHCP RELEASE

119. The traditional packet loss strategy adopts the tail-drop method, which will cause the TCP global synchronization phenomenon.

True

False

120. MPLS is a label forwarding technology, which of the following description of MPLS is wrong?

The IP Routing Protocol module in the control plane is used to transmit routing information and generate routing information tables

The Label Distribution Protocol module in the data plane is used to complete the exchange of label information and establish a label forwarding path

The data plane includes the IP Forwarding Information Base. When a normal Ir message is received, if it is a normal IP forwarding, it will look up the IP routing table and forward it.

When receiving a labeled message, if it needs to be forwarded according to the label, it is forwarded according to the label forwarding table, if it needs to be forwarded to the IP network, it is forwarded according to the IP forwarding table after removing the label

Page 13 of 14

121. In the MPLS system, there are two ways to publish labels, namely: (Multiple Choice)

Free way

Independent

Conservative approach

Orderly approach

122. At the network layer, which of the following cannot be used to classify IP packets?

Message length

VLAN ID

Source IP address and destination IP address

ToS field

123. What are the advantages of NFV? (Multiple choice)

Reduce equipment costs and energy costs

Shorten the cycle of network operation business innovation

Network equipment can be unified version, unified management enters tenants

A single platform serves different applications and tenants

124. The remote alarm notification methods supported by Esight network management include: (Multiple Choice)

Mail

Voice

SMS

WeChat

125. The SDN architecture mainly includes two interfaces: NBI northbound interface and SBI southbound interface.

True

False

126. The central content of congestion management is to determine the sequence of data packet processing by formulating scheduling strategies.

TRUE

FALSE

127. The main features of packet filtering firewall include?

With the increase of ACL complexity and length, the filtering performance of firewalls tends to decrease exponentially

Static ACL rules are difficult to adapt to dynamic security filtering requirements

Do not check the session state or analyze the data, which is easy for hackers to get confused.

Ability to completely control the exchange of network information, control the session process and have high security

128. For a device running MPLS, there will be label forwarding, so the incoming label of everyone in the label forwarding table:

Must be different

Must be the same

May be the same

129. As shown in the figure, it is the LDP session establishment process. After the TCP connection is established, the SWB will become the active party to start parameter negotiation and establish an LDP session.

Which of the following steps are the correct order?

2-1-3-4

2-1-4-3

1-3-2-4

1-2-3-4

130. Intranet users of a certain company use NAT's No-pat method to access the Internet. If all public IP addresses are used, what will happen to intranet users who subsequently go online?

Automatically switch NAT to PAT and then surf the Internet

Subsequent intranet users will not be able to access the Internet

Synchronize packets to other NAT translation devices for NAT translation

Squeeze out the previous user and force NAT conversion to access the Internet

Page 14 of 14

131. In the process of the client applying for an IP address through DHCP and assigning an IP address to the DHCP server, which of the following messages are usually unicast? (Multiple Choice)

DHCP OFFER

DHCP REQUEST

DHCP DISCOVER

DHCP ACK

132. In an MPLS network, the device will forward the MPLS data frame according to the label. Where is the label of the MPLS?

In the third floor

Behind the third floor and in front of the second floor

Behind the second floor and in front of the third floor

In front of the second floor

133. As shown in the figure, MPLS/BGP IP VPN is deployed in the network, and the MP-BGP neighbor relationship is established between PE1 and PE2 through the loopback0 interface. After the configuration is completed, it is found that CE1 and CE2 cannot learn from each other.

Therefore, use the command on PE2 to view neighbor information as shown in the figure. What is the most likely cause of the problem?

一些文字和图片的手机截图

中度可信度描述已自动生成

PE or PE2 is not enabled with neighbors in the BGP-VPNv4 unicast address family view.

The VPN instance parameter configuration on P1 or PE2 is incorrect.

The routing protocol configuration between PE or PE2 and the respective CE is incorrect.

The LSP tunnel between PE1 and PE2 is not established.

134. The NAT Server function maps a public IP address to the server's private IP address, which is a way to translate the destination IP address of the message.

TRUE

FALSE

135. Which device discovery methods does Huawei eSight network management software support? (Multiple choice)

Specify an IP address

Specify an IP address segment

Specify product model

Import via Excel (specify IP address)

Huawei HCIP Routing & Switching H12-222_V2.5 Exam Updated Questions

Huawei HCIP Routing & Switching H12-222_V2.5 Exam Updated Questions

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