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H12-831_V1.0 HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Questions and Answers

Questions 4

On the network shown in the figure, EBGP peer relationships are established between neighboring routers through directly connected interfaces.

    The router ID of each router is 10.0.X.X, and the AS number is 6500X, where X is the number of the router.

    Both R1 and R4 have static routes to 192.168.1.0/24, which are imported to BGP through the import-route command.

    R1 adds a community attribute (1:1) to the route before advertising it to its peers.

    All routers are configured to propagate community attributes.

    R3 is configured with a routing policy that rejects routes with the community attribute 1:1.

H12-831_V1.0 Question 4

In this case, which of the following is the path for traffic from R3 to 192.168.1.0/24?

Options:

A.

R3 → R2 → R4

B.

R3 does not have a route to 192.168.1.0/24

C.

R3 → R2 → R1

D.

R3 → R5 → R1

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Questions 5

OSPF requires that routers in the same area have the same link state database (LSDB). As the number of routes on the network increases, some routers cannot carry so much routing information due to limited system resources. This state is called database overflow. If the Isdb-overflow-limit number 7 command is run on all routers on an OSPF network, which of the following conditions are likely to cause routers to enter the overflow state?

Options:

A.

The number of Type 4 LSAs exceeds 7.

B.

The number of Type 5 LSAs exceeds 7.

C.

The number of Type 7 LSAs exceeds 7.

D.

The number of Type 3 LSAs exceeds 7.

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Questions 6

The device operating environment is crucial for stable device operating, including the equipment room, power supply, and heat dissipation. Maintenance personnel must be on site to maintain the device operating environment.

Options:

A.

TRUE

B.

FALSE

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Questions 7

On the network shown in the figure, the network administrator configures the DHCP snooping trust function on the switch.

    GE0/0/2 is a trusted interface (connected to the DHCP Server).

    GE0/0/3 is an untrusted interface (potential attacker).

H12-831_V1.0 Question 7

Which of the following statements are true about the two interfaces?

Options:

Options:

A.

When receiving a DHCP response packet on GE0/0/2, the switch forwards the packet through GE0/0/1.

B.

When receiving a DHCP request packet on GE0/0/2, the switch forwards the packet through GE0/0/3.

C.

When receiving a DHCP response packet on GE0/0/3, the switch forwards the packet through GE0/0/1.

D.

When receiving a DHCP request packet on GE0/0/3, the switch forwards the packet through GE0/0/2.

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Questions 8

Service routes of an enterprise are transmitted on the network. Some configurations of PE1 and PE2 are shown in the figure. Which of the following LSAs may CE2 receive?

H12-831_V1.0 Question 8

Options:

A.

Type 5 LSA

B.

Type 1 LSA

C.

Type 3 LSA

D.

Type 7 LSA

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Questions 9

The figure shows information about VPN1 on a PE (Provider Edge) router in a BGP/MPLS IP VPN network.

When the VPNv4 route corresponding to VPN1 is advertised to the remote PE, which VPNs of the remote PE will accept the route?

VPN1 Configuration:

ip vpn-instance VPN1

ipv4-family

route-distinguisher 100:1

vpn-target 100:1 200:1 300:1 export-extcommunity

VPN Import Policies on the Remote PE:

Options:

A.

VPN1: Import RT=100:1

B.

VPN2: Import RT=200:1, 400:1

C.

VPN3: Import RT=100:1, 300:1

D.

VPN4: Import RT=500:1

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Questions 10

On the OSPF network shown in the figure, the cost values of links are marked, and OSPF IP FRR is enabled on R1. Which of the following statements is false?

H12-831_V1.0 Question 10

Options:

A.

If the link between R1 and SI is disconnected, Rl recalculates the optimal path to R3 and performs path switching instantly.

B.

If the link between R2 and SI is disconnected, R1 recalculates the optimal path to R3 and performs path switching instantly.

C.

If the link between R1 and SI is disconnected, R1 directly uses the backup path to forward packets to R3 because FRR is enabled on R1.

D.

If the link between R1 and SI is disconnected and you check neighbor information on R1, the neighbor relationship between R1 and R2 will instantly display Down.

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Questions 11

On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are RRs (Route Reflectors), and R1, R4, R3, and R6 are clients. The iBGP peer relationships are established using Loopback0 on each router, and the router ID is 10.0.0.X/32, where X is the number of the router. R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import-route command. Which of the following statements are true?

H12-831_V1.0 Question 11

Options:

A.

The routing table of R4 contains two equal-cost default routes.

B.

The route 192.168.1.0/24 in the routing table of R3 has two next hops.

C.

The routing table of R1 does not contain the route 192.168.2.0/24.

D.

For 192.168.1.0/24, R3 preferentially selects the BGP route received from R2, and R6 preferentially selects the BGP route received from R5.

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Questions 12

On the network shown in the figure, the network administrator deploys DHCP snooping on the switch to defend against bogus DHCP server attacks.

H12-831_V1.0 Question 12

Which of the following interfaces should be configured as the DHCP trusted interface?

Options:

A.

GE0/0/3

B.

GE0/0/1

C.

GE0/0/4

D.

GE0/0/2

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Questions 13

If technology migration on the network affects the services running on the live network, strictly follow the preset operation process and risk control measures during the implementation of the technology migration project. Generally, this type of project is defined as a migration project. Which of the following operations performed on the live network belongs to a non-migration project?

Options:

A.

Changing the mode of importing routes to BGP from network mode to import mode in batches

B.

Modifying the description of router interfaces in batches

C.

Changing the area type of some OSPF routers to the stub area in batches

D.

Changing the levels of IS-IS Level-1-2 routers to Level-1 in batches

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Questions 14

On an MPLS network, after an LSR receives a Hello message from a peer, the LSR establishes an LDP adjacency with the peer. The Hello message is sent in multicast or unicast mode.

Options:

A.

TRUE

B.

FALSE

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Questions 15

During an attempt to log in to a NetEngine AR6120 through the console port, the network engineer finds that the password is incorrect and the login fails. If a Telnet account can be used to log in to the device and the account has the permission to change the console port password, the network engineer can log in to the device through Telnet to change the console port password.

Options:

A.

TRUE

B.

FALSE

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Questions 16

On the network shown in the figure, the DHCP server function is enabled on GEO/0/0 of R2, and the address pool is an interface address pool. When GEO/0/0 and GEO/0/1 of R1 function as DHCP clients, only one interface can obtain an IP address by default.

H12-831_V1.0 Question 16

Options:

A.

TRUE

B.

FALSE

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Questions 17

On the IS-IS IPv6 network shown in the figure, multi-topology is enabled on all routers. The IPv6 address of Loopback0 on R4 is 2000::/128. The IPv6 summary 2000::/64 level-1-2 command is configured in the IS-IS processes of R2 and R1. Which of the following statements is false?

H12-831_V1.0 Question 17

Options:

A.

The routing table of R1 contains the route 2000::/64.

B.

The routing table of R2 contains the route 2000::/64.

C.

The routing table of R3 contains the route 2000::/128.

D.

The routing table of R2 contains the route 2000::/128.

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Questions 18

On the OSPF network shown in the figure, area 1 is a stub area, area 2 is a totally stub area, and area 3 is an NSSA. Which of the following routers are unable to import external routes?

H12-831_V1.0 Question 18

Options:

A.

R3

B.

R4

C.

R6

D.

R5

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Questions 19

On the IS-IS IPv6 network shown in the figure:

    Multi-topology is enabled on all routers.

    The IPv6 address of Loopback0 on R4 is 2000::4/128.

    The command ipv6 summary 2000::/64 level-2 is configured in the IS-IS processes of R2 and R1.

    The command ipv6 import-route isis level-2 into level-1 is configured in the IS-IS processes of R1, R2, and R3.

H12-831_V1.0 Question 19

Which of the following routers have the route 2000::/64 in their routing tables?

Options:

A.

R4

B.

R5

C.

R3

D.

R2

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Questions 20

On the OSPF network shown in the figure, areas 1, 2, and 3 are common areas. The IP address of Loopback0 on R5 is 10.0.5.5/32, and OSPF is enabled on the interface using the network command.

ACL 2000 (with the matching rule shown in the figure) is configured on all routers. If the command filter 2000 import is run in area 0 (where R1, R2, and R3 reside), which of the following routers do not have the route 10.0.5.5/32 in their routing tables?

H12-831_V1.0 Question 20

Options:

A.

R1

B.

R3

C.

R4

D.

R2

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Questions 21

On the network shown in the figure, IS-IS runs on R1, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. The import-route isis level-2 into level-1 command is configured on R2.

In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are Route Reflectors (RRs), and R1, R4, R3, and R6 are clients.

The iBGP peer relationships are established using Loopback0. The IP address of Loopback0 on each router is 10.0.X.X/32, and the router ID is 10.0.X.X, where X is the number of the router.

R1 and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import-route command.

H12-831_V1.0 Question 21

Which of the following statements are true?

Options:

A.

The route 192.168.2.0/24 in the routing table of R4 has two next hops.

B.

The routing table of R1 contains two equal-cost default routes.

C.

The routing table of R4 contains two equal-cost default routes.

D.

The routing table of R1 contains the route 192.168.2.0/24.

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Questions 22

On the OSPF network shown in the figure, R1 and R2 are connected through four links. OSPF is enabled on Loopback0 of R2, and the maximum load-balancing 1 command is run in the OSPF process of R1. Which of the following is the outbound interface from R1 to Loopback0 of R2?

H12-831_V1.0 Question 22

Options:

A.

GE0/0/2.20

B.

GE0/0/0

C.

GE0/0/2.10

D.

GE0/0/1

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Questions 23

On the OSPFv3 network shown in the figure, area 1 is a stub area. Which of the following statements are true?

H12-831_V1.0 Question 23

Options:

A.

Default routes exist in the routing tables of R1 and R2.

B.

Both R1 and R2 generate Network-LSAs.

C.

Both R1 and R2 generate Inter-Area-Prefix-LSAs.

D.

Both R1 and R2 generate Intra-Area-Prefix-LSAs.

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Questions 24

There are multiple types of MAC address entries on a switch. Which of the following entries are manually configured and cannot be aged out?

Options:

A.

MUX MAC address entries

B.

Static MAC address entries

C.

Dynamic MAC address entries

D.

Blackhole MAC address entries

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Questions 25

On a PIM-SM multicast network, a network engineer finds that multicast clients cannot receive multicast data. Which of the following is not a possible cause of this problem?

Options:

A.

The unicast routes from multicast devices to the RP are unavailable.

B.

The downstream interfaces of multicast devices do not receive any (*, G) Join messages.

C.

Downstream interfaces of multicast devices are disabled from forwarding State-Refresh messages.

D.

The RP addresses of multicast devices are different.

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Questions 26

On the network shown in the figure, IS-IS runs on Rl, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. In AS 65000, Ri, R3, R4, and R6 each establish IBGP peer relationships with R2 and R5. R2 and R5 are RRs, and Rl, R4, R3, and R6 are clients. The IBGP peer relationships are established using LoopbackO. The IP address of LoopbackO on each router is 10.0.X.X/32, and the router ID is 10.0.X.X, where X is the number of the router. Rl and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import-route command. Which of the following statements are true?

H12-831_V1.0 Question 26

Options:

A.

For 192.168.2.0/24, R2 preferentially selects the BGP route received from R3.

B.

For 192.168.1.0/24, R3 preferentially selects the BGP route received from R2.

C.

For 192.168.2.0/24, R5 preferentially selects the BGP route received from R3.

D.

For 192.168.1.0/24, R6 preferentially selects the BGP route received from R2.

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Questions 27

On the OSPFv3 network shown in the figure, area 1 is an NSSA. R1 imports the external route 2000::1/128 to OSPFv3. Which of the following LSAs are available in area 0?

H12-831_V1.0 Question 27

Options:

A.

Link-LSA

B.

Inter-Area-Router-LSA

C.

Intra-Area-Prefix-LSA

D.

Inter-Area-Prefix-LSA

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Questions 28

On the network shown in the figure, EBGP peer relationships are established between ASs through directly connected interfaces.

    OSPF is deployed in AS 65456 (with OSPF disabled on interconnected interfaces between ASs).

    R4 and R5 use Loopback0 to establish iBGP peer relationships with R6.

    The IP address of Loopback0 on each router is 10.0.X.X/32, and the router ID is 10.0.X.X, where X is the number of the router.

    R1, R2, and R3 import the external route 192.168.1.0/24 into BGP through the import-route command.

H12-831_V1.0 Question 28

Which of the following statements are true?

Options:

A.

For 192.168.1.0/24, R5 preferentially selects the route received from R2.

B.

For 192.168.1.0/24, R4 preferentially selects the route received from R1.

C.

For 192.168.1.0/24, if the default local-preference 150 command is configured on R3, R5 preferentially selects the route received from R3.

D.

For 192.168.1.0/24, R6 preferentially selects the route received from R4.

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Questions 29

An administrator runs the display mpls Isp command to view LSPs on a device. The command output is shown in the figure. Which of the following statements are true?

H12-831_V1.0 Question 29

Options:

A.

Traffic sent from GEO/0/1 of the device to 3.3.3.3 does not carry any label.

B.

For the traffic destined for 3.3.3.3, the device is the penultimate transit device.

C.

For the traffic destined for 1.1.1.1, the device is the last hop, that is, the egress device.

D.

Traffic sent from GE0/0/0 of the device to 1.1.1.1 carries label 1026.

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Questions 30

On the OSPFv3 network shown in the figure, OSPFv3 parameters use default values. The LSDB is checked on one of the devices. The router IDs of R1, R3, and R4 are 10.0.1.1, 10.0.3.3, and 10.0.4.4, respectively. The Origin Router part of some LSAs is hidden. Complete this part. (Tokens can be reused.)

H12-831_V1.0 Question 30

H12-831_V1.0 Question 30

Options:

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Questions 31

On the network shown in the figure, IS-IS IPv6 runs on R2, R6, and R3, and the IPv6 address of Loopback0 on R6 is 2000::6/128. OSPFv3 runs on other links. Area 1 is a stub area, and Area 2 is an NSSA. IS-IS routes are imported to OSPFv3 on R2 and R3. Which of the following statements are true?

H12-831_V1.0 Question 31

Options:

A.

The routing table of R6 contains the route ::/0.

B.

The routing table of R5 contains the route 2000::6/128.

C.

The routing table of R4 contains the route 2000::6/128.

D.

The routing table of R1 contains the route 2000::6/128.

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Questions 32

On the OSPF network shown in the figure, the cost values of links are marked. OSPF IP FRR is enabled on R1, and the maximum load-balancing 8 command is configured in the OSPF process. If a service passes through the path R1 → R5 → R3 to reach 10.0.3.3/32, which of the following is the backup outbound interface for the service?

H12-831_V1.0 Question 32

Options:

A.

GE0/0/2

B.

GE0/0/2 and GE0/0/3

C.

GE0/0/3

D.

There is no backup outbound interface.

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Questions 33

Both VLAN aggregation and MUX VLAN are deployed on the enterprise network shown in the figure.

    All switch interfaces connected to terminals are access interfaces.

    Given this, match PC1 to PC4 with the hosts or servers they can access on the network.

(Note: A host cannot be matched with itself. For example, PC1 cannot match PC1. Tokens can be reused.)

H12-831_V1.0 Question 33

Options:

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Questions 34

On a BGP/MPLS IP VPN network, which of the following are carried when a PE advertises VPNv4 routes?

Options:

A.

IPv4 prefix

B.

RD

C.

Export target

D.

Import target

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Questions 35

On the network shown in the figure, VRRP is configured on Rl and R2, and the virtual IP address is 10.0.12.254. After the configuration is complete, the network engineer checks the VRRP status on R1 and R2, and finds that both devices are in the Master state. Which of the following is not a possible cause of this problem?

H12-831_V1.0 Question 35

Options:

A.

R1 and R2 have different priorities in the VRRP group.

B.

GE0/0/1 and GEO/0/2 of SW1 belong to different VLANs.

C.

The VRIDs configured on R1 and R2 are different.

D.

The virtual IP addresses configured on R1 and R2 are different.

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Questions 36

On the IS-IS network shown in the figure, R1 imports a default route using the default-route-advertise always level-1 command. Which of the following statements is false?

H12-831_V1.0 Question 36

Options:

A.

If R1 pings a nonexistent IP address, for example, 10.0.4.4, R1 does not send any data packets.

B.

10.0.2.2 can ping 10.0.3.3.

C.

10.0.1.1 can ping 10.0.2.2.

D.

10.0.1.1 can ping 10.0.3.3.

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Questions 37

IPSG is a source IP address filtering technology based on Layer 3 interfaces. It prevents malicious hosts from forging authorized hosts' IP addresses to access authorized network resources.

Options:

A.

TRUE

B.

FALSE

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Questions 38

On the OSPFv3 network shown in the figure, the IPv6 address of Loopback0 on R3 is 2000-3/128, and OSPFv3 is enabled. Which of the following statements are true?

H12-831_V1.0 Question 38

Options:

A.

R2 definitely generates a Link-LSA.

B.

The Link-LSA generated by R2 does not exist in the LSDB of Rl.

C.

Rl definitely generates a Network-LSA.

D.

R3 definitely generates an Intra-Area-Prefix-LSA.

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Questions 39

R1 and R2 use directly connected interfaces to establish an EBGP peer relationship. R1 imports 2000:: 1/128 to BGR By default, which of the following is the next hop of the route from R2 to 2000:: 1/128?

H12-831_V1.0 Question 39

Options:

A.

2002: 12:: 1

B.

2001:12.1

C.

2003:12::1

D.

2000:12::1

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Exam Code: H12-831_V1.0
Exam Name: HCIP-Datacom-Advanced Routing & Switching Technology V1.0
Last Update: Mar 28, 2025
Questions: 156

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