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Question # 4

Without a prior version check, an engineer configures IGMP snooping on a device and the version of IGMP snooping is earlier than the IGMP versions on user hosts. In this case, which of the following situations will occur?

A.

Users cannot receive multicast data because the device forwards received IGMP Report messages only to router ports and does not generate group member ports or forwarding entries.

B.

Users cannot receive multicast data, but the device generates forwarding entries after receiving IGMP Report messages.

C.

The IGMP snooping version of the device is automatically degraded, and users can receive multicast data properly.

D.

The IGMP versions of the hosts are automatically upgraded, and users can receive multicast data properly.

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Question # 5

Which of the following statements regarding an IP prefix are true?

A.

An IP prefix filter is used to filter IP address prefixes and cannot match an IP prefix number and a prefix length at the same time.

B.

An IP prefix filter cannot be used to filter data packets.

C.

An IP prefix filter is used to filter IP address prefixes and can match an IP prefix number and a prefix length at the same time.

D.

An IP prefix filter can be used to filter data packets.

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Question # 6

According to BGP route selection rules, the route with the higher Local_Pref is preferred.

A.

TRUE

B.

FALSE

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Question # 7

On a broadcast IS-IS network shown in the following figure, a DIS needs to be elected to create and update pseudonodes. Which of the following routers is elected as the DIS?

A.

R1

B.

R3

C.

R4

D.

R2

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Question # 8

Which of the following messages are sent when BGP establishes peer relationships?

A.

Keepalive

B.

Hello

C.

Update

D.

Open

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Question # 9

A wide area network (WAN) is a remote network that connects local area networks (LANs) or metropolitan area networks (MANs) in different areas for communication purposes. It is typically used to interconnect campus networks or data center networks.

A.

TRUE

B.

FALSE

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Question # 10

When receiving a packet, a Huawei router matches the packet against ACL rules. The default ACL matching order used by the Huawei router is.

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Question # 11

On an STP network, only the designated port processes inferior BPDUs. On an RSTP network, a port with any role processes inferior BPDUs.

A.

TRUE

B.

FALSE

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Question # 12

Which of the following statements regarding DR/BDR are false?

A.

In a broadcast network, DR and BDR must be elected. A broadcast network without a DR or BDR cannot operate normally.

B.

DR others listen on the multicast address 224.0.0.5.

C.

All DR others establish neighbor relationships with DR and BDR only.

D.

DR others listen on the network address 224.0.0.6.

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Question # 13

An OSPF AS-external LSA describes a route to an AS external network. When the field in the LSA is 0.0.0.0, the traffic destined for the external network is sent to the ASBR that imports this external route. (Enter the acronym in uppercase.)

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Question # 14

On a broadcast IS-IS network, a DIS needs to be elected to create and update pseudonodes. Which of the following values is the default DIS priority of an IS-IS interface?

A.

200

B.

64

C.

1

D.

100

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Question # 15

The Internet Assigned Numbers Authority (IANA) allocates Class D addresses to IPv4 multicast. An IPv4 address is 32 bits long, and the four most significant bits of a Class D address are 1110.

A.

TRUE

B.

FALSE

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Question # 16

If the interval for two consecutive packets of a TCP session reaching the firewall is longer than the aging time of the session, the firewall deletes the session information from the session table to ensure network security.

A.

TRUE

B.

FALSE

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Question # 17

On Huawei switches, which of the following planes provides network information and forwarding entries that are mandatory for data plane forwarding?

A.

Forwarding plane

B.

Control plane

C.

Data plane

D.

Monitoring plane

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Question # 18

In an OSPF routing domain, two routers must be specified as one DR and one BDR in a broadcast or NBMA network with at least two routers.

A.

TRUE

B.

FALSE

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Question # 19

Which of the following protocols are multi-channel protocols?

A.

H.323

B.

FTP

C.

Telnet

D.

SMTP

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Question # 20

In BGP, the origin attribute of the routes imported using the import-route command is incomplete.

A.

TRUE

B.

FALSE

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Question # 21

On an OSPF network, if a router receives an update of an LSA that exists in the local LSDB, the router updates the LSDB and floods the LSA.

A.

TRUE

B.

FALSE

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Question # 22

On an IS-IS network, each router can generate LSPs. Which of the following events trigger the generation of a new LSP?

A.

Related IS-IS interfaces go up or down.

B.

Periodic updates occur.

C.

Inter-area IP routes change.

D.

The IS-IS interface cost is increased.

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Question # 23

A BGP device receives a route carrying an unknown attribute from a peer but does not know whether other devices need the attribute. In this case, the BGP device retains this attribute when advertising the route to other peers. Which of the following attributes is of this type?

A.

Community

B.

AS.Path

C.

MED

D.

OriginatorID

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Question # 24

Which of the following statements regarding the summary automatic command and BGP route summarization is false?

A.

After this command is configured, BGP sends only the summarized routes to peers

B.

This command is used to implement automatic summarization. Automatic summarization takes precedence over manual summarization

C.

This command enables automatic summarization for the locally imported routes

D.

After this command is configured, BGP summarizes routes based on natural network segments

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Question # 25

GRE is a VPN technology that can implement packet transmission over heterogeneous networks. Which of the following statements are true about GRE?

A.

GRE is a Layer 2 VPN encapsulation technology.

B.

GRE enables encapsulated data packets to be transmitted over another network layer protocol, but cannot encapsulate multicast data.

C.

GRE tunnels can work with IPsec to ensure the security of multicast services such as voice and video.

D.

GRE tunnels can extend the working range of network protocols with hop limits.

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Question # 26

After BGP initiates a TCP connection, the ConnectRetry timer is disabled if the TCP connection is successfully established. If the TCP connection fails to be established, the device tries to reestablish the TCP connection when the ConnectRetry timer expires.

A.

TRUE

B.

FALSE

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Question # 27

Which of the following statements regarding the MED value in BGP are true?

A.

According to BGP route selection rules, the MED value has a lower priority than AS_Path, Preferred-Value, Local-Preference, and Origin.

B.

The default MED value of BGP routes is 0.

C.

By default, BGP can compare the MED values of routes from different ASs.

D.

By default, if there is no MED value in routes, the value 0 is used. If the bestroute med-none-as-maximum command is configured, the maximum MED value 4294967295 is used.

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Question # 28

After the administrator of an enterprise deploys a DHCP server, employees complain that their clients cannot obtain IP addresses from the DHCP server. Which of the following may cause this problem?

A.

Multiple DHCP servers are configured.

B.

STP is enabled on the DHCP server.

C.

The DHCP function is disabled by default, and the administrator forgets to enable the DHCP function.

D.

DHCP clients and the DHCP server are on different network segments, and no DHCP relay agent is configured on the network.

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Question # 29

In IPv6, to communicate with a destination host, a host must obtain the link-layer address of the destination host through ARP.

A.

TRUE

B.

FALSE

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Question # 30

BGP routes have multiple path attributes. When a router advertises a BGP route to its peers, the route carries multiple path attributes. These attributes describe the characteristics of the BGP route and affect route selection in some scenarios. The attribute is Huawei-specific. It is valid only on the local device and is not transmitted to BGP peers. (Enter the attribute name in lowercase as it appears in the command output about the BGP routing table.)

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Question # 31

A network entity title consists of an area address and a system ID. It is a special NSAP (the SEL has a fixed value of 00) and is mainly used for route calculation.

A.

TRUE

B.

FALSE

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Question # 32

ACLs are a common matching tool in routing policies. An ACL can be configured on a router to match routes.

A.

TRUE

B.

FALSE

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Question # 33

Link aggregation is a common network technology. Which of the following are advantages of link aggregation?

A.

Load balancing

B.

Improved reliability

C.

Increased link bandwidth

D.

Route backup

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Question # 34

Which of the following statements is false about BFD?

A.

The asynchronous mode is the primary BFD operating mode.

B.

In asynchronous mode, two systems periodically exchange BFD Control packets at the negotiated interval. If one system does not receive any BFD Control packets from the other within the detection interval, the BFD session is declared down.

C.

The asynchronous mode does not support the echo function.

D.

In demand mode, after a BFD session is set up, the system does not periodically send BFD Control packets.

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Question # 35

GRE is a Layer 2 VPN encapsulation technology that encapsulates packets of certain data link layer protocols so that the encapsulated packets can be transmitted over an IP network.

A.

TRUE

B.

FALSE

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Question # 36

Which of the following statements is false, based on the following IGMP information on an interface of RTA?XC

A.

The interval for sending group-specific Query messages is 60s.

B.

The maximum time for response to Query messages is 10s.

C.

The IP address of the interface is 192.168.1.1.

D.

The IGMP version is IGMPV2.

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Question # 37

See the following figure. All routers on the network run IS-IS and are in area 49.0001. By referring to the LSDB of R1, the Level-2 DIS is. (Enter the device name, for example, R1.)

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Question # 38

BFD for OSPF is deployed on a directly connected link. If the physical link is disconnected, drag the following BFD processes to the corresponding sequence numbers.

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Question # 39

What parameters can a DHCP6 server assign to a DHCPv6 client?

A.

Gateway address

B.

DNS server address

C.

IPV6 address/prefix

D.

SNTP server address

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Question # 40

An enterprise uses Huawei routers to deploy an IS-IS network for network-wide communication. An engineer wants to change the interface cost to control route selection. By default, which of the following values is the maximum cost that can be configured?

A.

67

B.

63

C.

64

D.

68

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Question # 41

A switch running a later IGMP version can identify Report messages of an earlier IGMP version, but the switch running an earlier IGMP version cannot identify Report messages of a later IGMP version. To ensure that IGMP runs properly, you are advised to set the IGMP version on the switch to be the same as or later than the IGMP version of member hosts.

A.

TRUE

B.

FALSE

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Question # 42

OSPF networks are classified into broadcast, P2P, P2MP, and NBMA networks. Which of the following types of networks use the default Hello time (30s)?

A.

P2P

B.

Broadcast

C.

P2MP

D.

NBMA

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Question # 43

The Interface \P address and VRRP virtual IP address can be the same.

A.

TRUE

B.

FALSE

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Question # 44

During routine operation and maintenance, an engineer checks the IGMP configuration on RTA. The configuration is as follows:

Interface information of VPN-Instance: public net

GigabitEthernet0/0/1 (192.168.1.1):

IGMP is enabled

Current IGMP version is 2

IGMP state: up

IGMP group policy: none

IGMP limit: -

Value of query interval for IGMP (negotiated): -

Value of query interval for IGMP (configured): 60 s

Value of other querier timeout for IGMP: 0 s

Value of maximum query response time for IGMP: 10 s

Querier for IGMP: 192.168.1.1 (this router)

Given this, which of the following statements is false?

A.

The IP address of the interface is 192.168.1.1.

B.

The maximum response time to Query messages is 10s.

C.

The interval for sending Group-Specific Query messages is 60s.

D.

The IGMP version is IGMPv2.

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Question # 45

During BGP route summarization configuration, the keyword can be used to suppress all specific routes so that only the summary route is advertised. The summary route carries the Atomic-aggregate attribute rather than the community attributes of specific routes.

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Question # 46

An IP prefix list is configured on a router using the following command:

ip ip-prefix huawei index 10 permit 10.1.1.0 24 greater-equal 26

In this case, the value of greater-equal-value is ____, and the value of less-equal-value is ____.

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Question # 47

Which of the following TLVs is used by ISIS to describe the IP address of an interface?

A.

129

B.

131

C.

128

D.

132

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Question # 48

Which of the following statement regarding the display ospf peer command output is true?

A.

Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.

B.

Through negotiation during DD packet exchange, the local end becomes the slave.

C.

Router ID indicates that the local router ID Is 10.1.1.1.

D.

The DR address is 10.1.1.1

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Question # 49

A campus network uses OSPF for network communication. The display ospf peer command is run on a router, and the command output is as follows:

vbnet

Copy

Edit

display ospf peer

OSPF Process 1 with Router ID 10.0.2.2

Area 0.0.0.0 interface 10.0.235.2 (GigabitEthernet0/0/1)'s neighbors

Router ID: 10.0.5.5 Address: 10.0.235.5

State: Full Mode: Nbr is Master Priority: 1

DR: 10.0.235.5 BDR: 10.0.235.3 MTU: 0

Dead timer due in 40 sec

Area 0.0.0.0 interface 10.0.24.2 (Serial1/0/1)'s neighbors

Router ID: 10.0.4.4 Address: 10.0.24.4

State: Full Mode: Nbr is Master Priority: 1

DR: None BDR: None MTU: 0

Dead timer due in 35 sec

Which of the following statements are true about the device?

A.

The IP address of the DR on the network where R2 and its neighbor 10.0.5.5 reside is 10.0.235.5.

B.

R2 has established adjacencies with 10.0.5.5 and 10.0.4.4.

C.

The DR/BDR election fails on the network where R2 and its neighbor 10.0.4.4 reside.

D.

Router IDs of the two OSPF neighbors of R2 are 10.0.5.5 and 10.0.4.4.

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Question # 50

Which of the following statements regarding routing policy and policy-based routing are true?

A.

A routing policy is used to control import, advertisement, and receiving of routing information.

B.

Policy-based routing is used to control import, advertisement, and receiving of routing information.

C.

Policy-based routing is used to control packet forwarding without following routes in the routing table.

D.

A routing policy is used to control packet forwarding without following routes in the routing table.

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Question # 51

In the OSPF protocol, inter-area route calculation involves only Router LSA, Network LSA, and Summary LSA.

A.

TRUE

B.

FLASE

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Question # 52

Both MQC and PBR can be applied on device interfaces to filter received and sent packets or control packet forwarding paths.

A.

TRUE

B.

FALSE

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Question # 53

GRE is a VPN encapsulation technology that is widely used to transmit packets across heterogeneous networks. Which of the following statements is false about GRE?

A.

GRE supports encryption and authentication.

B.

GRE supports multicast transmission.

C.

GRE is a Layer 3 VPN encapsulation technology.

D.

GRE can work with other VPN protocols to better ensure data security.

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Question # 54

Which of the following LSAs are advertised only within a single area?

A.

Network LSA

B.

Router LSA

C.

Summary LSA

D.

AS External LSA

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Question # 55

Which of the following statements regarding IGMPv1 and IGMPv2 are true?

A.

1GMPv2 supports only general query.

B.

1GMPv2 defines the Leave message type.

C.

IGMPv1 does not define the IGMP Leave message type.

D.

IGMPv1 supports general query.

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Question # 56

On the network shown in the following figure, the management VLAN is VLAN 10, and the AP is configured to obtain an IP address on the network segment 10.1.1.0/24 through DHCP. The AP, AC, and AR function as the DHCP client, DHCP relay agent, and DHCP server, respectively. Which of the following configurations for the DHCP relay agent and DHCP server are correct?

A.

[AC] dhcp server group AP

[AC-dhcp-server-group-AP] dhcp-server 172.21.1.2

[AC-dhcp-server-group-AP] quit

[AC] interface Vlanif 10

[AC-Vlanif 10] dhcp select relay

[AC-Vlanif 10] dhcp relay server-select AP

[AC-Vlanif 10] quit

B.

[AR] ip pool AP

[AR-ip-pool-AP] network 10.1.1.0 mask 24

[AR-ip-pool-AP] gateway-list 10.1.1.2

[AR-ip-pool-AP] excluded-ip-address 10.1.1.1

[AR-ip-pool-AP] quit

[AR] interface GigabitEthernet 0/0/1

[AR-GigabitEthernetO/O/1] dhcp select global

[AR-GigabitEthernet0/0/l] quit

[AR] ip route-static 10.1.1.0 255.255.255.0 172.21.1.1

C.

[AR] ip pool AP

[AR-ip-pool-AP] network 172.21.1.0 mask 24

[AR-ip-pool-AP] gateway-list 172.21.1.2

[AR-ip-pool-AP] excluded-ip-address 172.21.1.1

[AR-ip-pool-AP] quit

[AR] interface GigabitEthernet 0/0/1

[AR-GigabitEthernetO/0/1] dhcp select global

[AR-GigabitEthernetO/0/1] quit

[AR] ip route-static 10.1.1.0 255.255.255.0 172.21.1.1

D.

[AC] dhcp server group AP

[AC-dhcp-server-group-AP] dhcp-server 10.1.1.2

[AC-dhcp-server-group-AP] quit

[AC] interface Vlanif 10

[AC-Vlanif 10] dhcp select relay

[AC-Vlanif 10] dhcp relay server-select AP

[AC-VlaniflO] quit

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Question # 57

On an OSPF network, interfaces are classified into four types based on link layer protocols. Which of the following types can interfaces on an IS-IS network be classified into based on physical links?

A.

P2P

B.

Broadcast

C.

P2MP

D.

NBMA

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Question # 58

When multiple access channels are set for the same access requirement, the insecure access channels are not used and secure access channels are selected in normal cases. Which of the following are secure access channels?

A.

HTTPS

B.

Telnet

C.

SNMPv2

D.

SFTP

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Question # 59

To enable PC1 to access PC2 using the IP address of the firewall's GE0/0/2, you need to configure NAPT for source address translation. In the following figure, fill in the blank to complete the command.

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Question # 60

Typically, a protocol that occupies two ports during communication is called a multi-channel protocol. For such protocols, the ASPF function must be enabled on the firewall to ensure smooth setup of the data channel and reduce the risk of attacks. Which of the following protocols is not a multi-channel protocol?

A.

FTP

B.

SIP

C.

SMTP

D.

H.323

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Question # 61

Which of the following statements regarding the LSA age field are true?

A.

The unit of this field is seconds. In a LSDB, the LS age of a LSA increases with time.

B.

If the LS age of a LSA has reached the LSRefreshTime (30 minutes), any router can regenerate an instance of this LSA again.

C.

The unit of this field is seconds. In a LSDB, the LS age of a LSA decreases with time.

D.

If the LS age of a LSA has reached the LSRefreshTime (30 minutes), the originator of this LSA needs to regenerate an instance of this LSA again.

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Question # 62

On an OSPF network, if two routers with the same router ID run in different areas and one of the routers is an ASBR, LSA flapping occurs.

A.

TRUE

B.

FALSE

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Question # 63

Which of the following statements regarding multicast MAC addresses are false?

A.

One multicast MAC address maps to 32 multicast IP addresses.

B.

One multicast MAC address maps to only one multicast IP address.

C.

The high 24 bits of the multicast MAC address are 0x01005E, the 25th bit is fixed to 1, and the lower 23 bits of the MAC address map to the lower 23 bits of the multicast IP address.

D.

A multicast MAC address identifies receivers of a multicast group on the data link layer.

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Question # 64

Which of the following statements is true about BGP?

A.

If the export routing policy applied to a BGP peer changes, manual intervention is required so that the device resends Update messages to the peer.

B.

IGP routes can be converted into BGP routes only through the network command.

C.

A router cannot be configured with multiple BGP processes.

D.

Open messages carry only the BGP header.

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Question # 65

Which of the following PIM protocol packets have unicast destination addresses.

A.

Register Stop

B.

Bootstrap

C.

Graft

D.

Assert

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Question # 66

The Neighbor Discovery Protocol (NDP) is an important basic protocol in the IPv6 protocol suite and plays an important role. Which of the following functions and features does it support?

A.

Address resolution

B.

Neighbor state tracing

C.

Duplicate address detection

D.

Redirection

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Question # 67

Which of the following statements regarding OSPF route summarization commands are true?

A.

The asbr-summary command is executed in the OSPF view.

B.

The abr-summary command is executed in the OSPF area view.

C.

Advertise is the default parameter of the abr-summary command. That is, if not-advertise is not specified in the abr-summary command, the advertise parameter takes effect by default.

D.

Not-advertise is the default parameter of the abr-summary command. That is, if advertise is not specified in the abr-summary command, the not-advertise parameter takes effect by default.

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Question # 68

The IP prefix list configuration on a Huawei router is shown below. Which of the following routes can match this IP prefix list?

bash

Copy

[huawei] ip ip-prefix test index 10 permit 10.0.0.0 8 less-equal 32

A.

10.1.1.1/32

B.

10.1.1.0/6

C.

10.1.1.0/24

D.

10.0.0.0/16

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Question # 69

ASPF enables the firewall to support multi-channel protocols such as FTP and to define security policies for complex applications.

A.

TRUE

B.

FALSE

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Question # 70

Which of the following statements regarding OSPF is true?

A.

OSPF does not have an acknowledgement mechanism. Therefore, OSPF relies on the upper-layer protocol, TCP, for acknowledgement.

B.

OSPF performs LSDB update every 30 minutes.

C.

OSPF uses the Bellman-Ford algorithm, and each router independently runs this algorithm.

D.

OSPF floods a LSU packet at an interval of 5s.

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Question # 71

As shown in the figure, the stateful inspection firewall forwards the packet because the packet matches the session status of the firewall.

A.

TRUE

B.

FALSE

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Question # 72

On an OSPF network, one router with P2P as the network type is directly connected to another router with P2MP as the network type. If the Hello intervals on the two routers are changed to be the same, neighbor relationship establishment and LSDB synchronization are not affected.

A.

TRUE

B.

FALSE

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Question # 73

Which of the following scenarios is not suitable for deploying interface PBR?

A.

A core switch needs to forward traffic between the intranet and extranet to an AC device that connects to the core switch in off-path mode.

B.

A core switch needs to forward the traffic between the intranet and extranet to a security detection device that connects to the core switch in off-path mode.

C.

A device needs to modify the next-hop IP address for locally originated traffic.

D.

On an enterprise network with multiple ISP outbound interfaces, each internal network segment accesses the Internet through a particular ISP outbound interface.

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