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Free Huawei H12-821 Practice Questions & Answers 2026 Part1 | HCIP-Datacom-Core Technology

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Question #1
Which of the following parameters are not mandatory during the configuration of a BGP peer? (Choose all that apply.)
A. password
B. Peer IP address
C. as-number
D. description
View answer
Correct Answer: AD

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Question #2
When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below? (Choose all that apply.)[HUAWEI]ip ip-prefix aa index 10 deny 1.1.1.1 24[HUAWEI]ip ip-prefix aa index 20 permit 1.1.1.1 32
A. 1
B. 1
C. 1
D. 1
View answer
Correct Answer: B
Question #3
See the network shown in the following figure. R1 and R2 run IS-IS, and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2.Which of the following statements are true? (Choose all that apply.)
A. The routing table of R1 contains the route 10
B. The routing table of R1 does not contain the route 10
C. The routing table of R1 does not contain the routes 10
D. The routing table of R1 contains the route 10
View answer
Correct Answer: BD
Question #4
Which of the following statements regarding BGP message types and characteristics is false?
A. Hello messages are periodically sent between BGP peers to maintain their connection
B. Update messages are used to exchange routing information between BGP peers
C. Open messages are used to establish a peer relationship between two neighbors
D. Notification messages are used to transmit error information between BGP Speakers
View answer
Correct Answer: A
Question #5
Which of the following statements regarding Network Address and Port Translation (NAPT) and No Port Translation (No-PAT) is true?
A. In NAPT mode, only the network layer protocol address can be converted
B. After NAPT translation, all packets are from the same IP address for external users
C. In No-PAT mode, only the transport layer protocol port number can be converted
D. In No-PAT mode, the network layer protocol address can be converted
View answer
Correct Answer: BD
Question #6
Multiple BGP processes cannot be configured on the same router.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #7
There are various types of VPNs, which can be applied to different layers. Which of the following network layers does SSL VPN belong to?
A. ANetwork layer
B. BApplication layer
C. CTransport layer
D. DData link layer
View answer
Correct Answer: B
Question #8
Which of the following statements regarding router ID in dynamic routing protocols is false?
A. After a router ID changes, router ID of each protocol will change without requiring additional operations
B. If no router ID is manually configured and loopback interface addresses are configured, the largest loopback interface address is used as the router ID
C. If a router ID is manually configured using the router-id command, this router ID will be used
D. If no router ID and no loopback interface address are configured, the largest physical interface IP address is used as the router I
View answer
Correct Answer: A
Question #9
Which of the following routing policy tools can be used to add or delete an AS path?
A. filter-policy
B. community-filter
C. ip-prefix
D. ip as-path-filter
View answer
Correct Answer: D
Question #10
Which of the following values can be used to set security levels of user-defined zones of USG series firewalls? (Choose all that apply.)
A. 40
B. 80
C. 100
D. 150
View answer
Correct Answer: ABC
Question #11
Which of the following statements is true about BGP?
A. f 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. GP routes can be converted into BGP routes only through the network command
C. router cannot be configured with multiple BGP processes
D. pen messages carry only the BGP header
View answer
Correct Answer: A
Question #12
The following is part of configuration on the router.Which of the following statements regarding the configuration is true?[HUAWEI]ip ip-prefix pl permit 10.0.192.0 8 greater-equal 17 less-equal 18
A. In the 10
B. In the 10
C. In the 10
D. In the 10
View answer
Correct Answer: A
Question #13
If a router receives two BGP routes carrying the following attributes, which of the following statements is true according to BGP route selection rules?
A. The optimal route is route N because its MED value is smaller than that of route M
B. The optimal route is route N because its AS_Path is longer than that of route M
C. The optimal route is route M because its AS_Path is shorter than that of route N
D. The optimal route is route M because its MED value is larger than that of route N
View answer
Correct Answer: C
Question #14
On an OSPF network, routers learn routing information on the entire network by exchanging LSAs.Which of the following values is the LS Age in the LSA header when an LSA is deleted?
A. 800s
B. 600s
C. 200s
D. 00s
View answer
Correct Answer: B
Question #15
Which of the following statements regarding the BGP error display of a router is false?
A. The error occurred at 11:40:39 on March 22, 2010
B. The neighbor address of this router is 10
C. The error may be caused by the incorrect peer AS number
D. Error Type indicates that the BGP error is caused by the neighbor relationship error
View answer
Correct Answer: C
Question #16
Multiple BGP processes cannot be configured on the same router.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #17
Which of the following statements regarding OSPF packets is false?
A. DD packets contain all LSA information and can be used to periodically synchronize LSOB information between neighbors
B. Hello packets are used to discover and maintain OSPF neighbor relationships and also can be used to elect DR and BDR on broadcast and NBMA networks
C. Two routers must send Hello packets at the same interval
D. DD packets carry LSA header information to describe link state summary information
View answer
Correct Answer: A
Question #18
Which of the following statements regarding OSPF packets is false?
A. DD packets contain all LSA information and can be used to periodically synchronize LSOB information between neighbors
B. Hello packets are used to discover and maintain OSPF neighbor relationships and also can be used to elect DR and BDR on broadcast and NBMA networks
C. Two routers must send Hello packets at the same interval
D. DD packets carry LSA header information to describe link state summary information
View answer
Correct Answer: A
Question #19
Which of the following statements regarding the MED value in BGP are true? (Choose all that apply.)
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
View answer
Correct Answer: ABD
Question #20
See the command output of a router below.Which of the following statements is true?
A. The router ID is 10
B. The interface cost is 1500
C. This router is a BDR
D. The interface IP address is 10
View answer
Correct Answer: C
Question #21
A forwarding information database (FIB) can directly guide packet forwarding on a router.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #22
Which cost types are supported in IS-IS? (Choose all that apply.)
A. default
B. wide
C. ToS
D. Narrow
View answer
Correct Answer: ABCD
Question #23
See the network shown in the following figure. Route leaking is configured on R1. In this case, R1 sends a Level-2 LSP to R3 so that R3 can learn routes on the entire network.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #24
Which of the following parameters are not mandatory during the configuration of a BGP peer? (Choose all that apply.)
A. password
B. Peer IP address
C. as-number
D. description
View answer
Correct Answer: AD
Question #25
Which of the following parameters are not mandatory during the configuration of a BGP peer? (Choose all that apply.)
A. password
B. Peer IP address
C. as-number
D. description
View answer
Correct Answer: AD
Question #26
Multiple BGP processes cannot be configured on the same router.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #27
Which of the following statements about the forwarding plane of a switch is false?
A. Provides high-speed and non-blocking data channels
B. Can collect packet statistics
C. Can encapsulate and decapsulate packets
D. Consists of main control boards and interface boards
View answer
Correct Answer: D
Question #28
See the network shown in the following figure. R1 and R2 run IS-IS, and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2.Which of the following statements are true? (Choose all that apply.)
A. The routing table of R1 contains the route 10
B. The routing table of R1 does not contain the route 10
C. The routing table of R1 does not contain the routes 10
D. The routing table of R1 contains the route 10
View answer
Correct Answer: BD
Question #29
MAC address-prioritized Portal authentication allows disconnected users who have completed Portal authentication to directly access the network again within a certain period of time after the disconnection without having to perform Portal authentication again.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #30
Which of the following statements regarding BGP peer are false? (Choose all that apply.)
A. BGP peers exchange link state information
B. A UDP connection must be established before BGP relationships are established
C. BGP routers support automatic neighbor discovery
D. BGP peers must be configured with MD5 authentication
View answer
Correct Answer: ABC
Question #31
Which of the following statements regarding the display bgp routing-table command output is true?
A. The route to the destination address 192
B. The MED value of the route to the destination address 192
C. The route to the destination address 192
D. The route to the destination address 192
View answer
Correct Answer: D
Question #32
The Hold time in the Open message sent by BGP Peer A is 90s, while that in the Open message sent by Peer B is 30s.What is the interval for sending Keepalive messages after the two peers establish a connection?
A. No Keepalive messages will be sent
B. 90s
C. 10s
D. 30s
View answer
Correct Answer: C
Question #33
Multiple BGP processes cannot be configured on the same router.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #34
See the network shown in the following figure. R1 and R2 run IS-IS, and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2.Which of the following statements are true? (Choose all that apply.)
A. The routing table of R1 contains the route 10
B. The routing table of R1 does not contain the route 10
C. The routing table of R1 does not contain the routes 10
D. The routing table of R1 contains the route 10
View answer
Correct Answer: BD
Question #35
The stateful inspection firewall uses the session table to trace activated TCP and UDP sessions, firewall security policies determine which sessions are established, and only the packets associated with sessions are forwarded.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #36
What is the aging time of the router port defined in IGMP Snooping?
A. 80
B. 50
C. 20
D. 0
View answer
Correct Answer: A
Question #37
BGP routers establish peer relationships using UDP.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #38
Multiple BGP processes cannot be configured on the same router.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #39
Which of the following parameters are not mandatory during the configuration of a BGP peer? (Choose all that apply.)
A. password
B. Peer IP address
C. as-number
D. description
View answer
Correct Answer: AD
Question #40
To filter traffic, you can use the traffic-filter or MQC. The MQC can be applied in more views than the traffic- filter.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #41
Which of the following statements regarding different LSA types is false?
A. LS Update packets contain complete LSA information
B. LS Ack packets contain complete LSA information
C. LS Request packets contain only LS Type, LS ID, and Advertising Rooter
D. DD packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number
View answer
Correct Answer: B
Question #42
Which of the following statements regarding the BGP error display of a router is false?
A. The error occurred at 11:40:39 on March 22, 2010
B. The neighbor address of this router is 10
C. The error may be caused by the incorrect peer AS number
D. Error Type indicates that the BGP error is caused by the neighbor relationship error
View answer
Correct Answer: C
Question #43
The following is part of output information on router Huawei.Which of the following statements regarding the output information is false?
A. The DR address on the interface is 10
B. GigabitEthernet/0 of the router runs PIM-SM
C. The PIM status on GigabitEthernet/0 of the router is Up
D. GigabitEthernet/0 of the router runs PIMv2
View answer
Correct Answer: A
Question #44
Which of the following statements regarding router ID in dynamic routing protocols is false?
A. After a router ID changes, router ID of each protocol will change without requiring additional operations
B. If no router ID is manually configured and loopback interface addresses are configured, the largest loopback interface address is used as the router ID
C. If a router ID is manually configured using the router-id command, this router ID will be used
D. If no router ID and no loopback interface address are configured, the largest physical interface IP address is used as the router I
View answer
Correct Answer: A
Question #45
In the OSPF protocol, intra-area route calculation involves only Router LSA, Network LSA, and Summary LSA.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #46
See the network shown in the following figure. R1 and R2 run IS-IS, and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2.Which of the following statements are true? (Choose all that apply.)
A. The routing table of R1 contains the route 10
B. The routing table of R1 does not contain the route 10
C. The routing table of R1 does not contain the routes 10
D. The routing table of R1 contains the route 10
View answer
Correct Answer: BD
Question #47
Which of the following statements about multi-active detection (MAD) in a stack is false?
A. Two stacks can use the same domain ID when they function as MAD relay agents of each other
B. MAD relay detection requires that all stack members be connected to the MAD relay agent and the connected links be added to the same Eth-Trunk
C. MAD in direct mode can be implemented through intermediate devices or in full-mesh mode
D. MAD can be implemented in direct or relay mode
View answer
Correct Answer: A
Question #48
Which of the following statements regarding the display bgp routing-table command output is true?
A. The route to the destination address 192
B. The MED value of the route to the destination address 192
C. The route to the destination address 192
D. The route to the destination address 192
View answer
Correct Answer: D
Question #49
Which of the following statements about the forwarding plane of a switch is false?
A. Provides high-speed and non-blocking data channels
B. Can collect packet statistics
C. Can encapsulate and decapsulate packets
D. Consists of main control boards and interface boards
View answer
Correct Answer: D
Question #50
Which of the following parameters are not mandatory during the configuration of a BGP peer? (Choose all that apply.)
A. password
B. Peer IP address
C. as-number
D. description
View answer
Correct Answer: AD
Question #51
OSPF has five types of packets, which have the same header format. If the Auth Type field in the packet header is 1, which of the following authentication modes is used?
A. on-authentication
B. D5 authentication
C. laintext authentication
D. ash authentication
View answer
Correct Answer: C
Question #52
Two Level-1 routers in different areas can establish a neighbor relationship.
A. RUE
B. ALSE
View answer
Correct Answer: B
Question #53
Which of the following attributes must be carried in an Update message?
A. ocal-Pref
B. ED
C. S_Path
D. refVal
View answer
Correct Answer: C
Question #54
A non-client is an IBGP peer that functions as neither an RR nor a client. A non-client must establishfully meshed connections with the RR and all the other non-clients.
A. RUE
B. ALSE
View answer
Correct Answer: A
Question #55
Similar to the OSPF DR, the IS-IS DIS needs to be elected on a broadcast network. However, the OSPFDR is preemptive by default, whereas the IS-IS DIS is not preemptive by default.
A. RUE
B. ALSE
View answer
Correct Answer: A
Question #56
See the network shown in the following figure. R1 and R2 run IS-IS, and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2.Which of the following statements are true? (Choose all that apply.)
A. The routing table of R1 contains the route 10
B. The routing table of R1 does not contain the route 10
C. The routing table of R1 does not contain the routes 10
D. The routing table of R1 contains the route 10
View answer
Correct Answer: BD
Question #57
Which of the following statements regarding different LSA types is false?
A. S Update packets contain complete LSA information
B. S Ack packets contain complete LSA information
C. S Request packets contain only LS Type, LS ID, and Advertising Rooter
D. D packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number
View answer
Correct Answer: B
Question #58
Which of the following statements regarding the display bgp routing-table command output is true?
A. The route to the destination address 192
B. The MED value of the route to the destination address 192
C. The route to the destination address 192
D. The route to the destination address 192
View answer
Correct Answer: D
Question #59
As shown in the figure, data traffic from a STA is forwarded by the HAP to the upper-layer network in direct forwarding mode before roaming, and the HAP is configured as the home agent.What is the flow direction of data traffic after Layer 3 roaming?
A. STA -> FAP -> FAC -> HAC -> HAP -> Upper-layer network
B. STA -> FAP -> FAC -> HAC -> HAP -> HAC -> Upper-layer network
C. STA -> FAP -> FAC -> HAC -> Upper-layer network
D. STA -> FAP -> FAC -> Upper-layer network
View answer
Correct Answer: A
Question #60
Which of the following parameters are not mandatory during the configuration of a BGP peer? (Choose all that apply.)
A. password
B. Peer IP address
C. as-number
D. description
View answer
Correct Answer: AD
Question #61
Which of the following statements is false, based on the following IGMP information on an interface of RTA?
A. The IP address of the interface is 192
B. The interval for sending group-specific Query messages is 60s
C. The maximum time for response to Query messages is 10s
D. The IGMP version is IGMPv2
View answer
Correct Answer: B
Question #62
Which of the following statements about a DHCP server on a large-scale Layer 3 WLAN are false? (Choose all that apply.)
A. APs can obtain the AC's IP address from a DHCP server using Option 43
B. APs can obtain the AC's IP address from a DHCP server using Option 60
C. An independent DHCP server is recommended
D. The AC is recommended as a DHCP server
View answer
Correct Answer: BD
Question #63
To prevent inter - area routing loops, OSPF does not allow advertising routing information between two non - backbone areas and allows sing routing information only within an area or between the backbone area and a non - backbone are a. Therefore, each ABR must be connected to the backbone area.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #64
Which of the following parameters are used in a firewall security policy to match traffic? (Choose all that apply.)
A. Application
B. Source security zone
C. Source IP address
D. Packet size
View answer
Correct Answer: ABC
Question #65
Which of the following statements regarding OSPF is true?
A. OSPF does not have an acknowledgement mechanism
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 an LSU packet at an interval of 5s
View answer
Correct Answer: C
Question #66
Which of the following statements regarding the BGP error display of a router is false?
A. The error occurred at 11:40:39 on March 22, 2010
B. The neighbor address of this router is 10
C. The error may be caused by the incorrect peer AS number
D. Error Type indicates that the BGP error is caused by the neighbor relationship error
View answer
Correct Answer: C
Question #67
Which of the following statements regarding the BGP error display of a router is false?
A. The error occurred at 11:40:39 on March 22, 2010
B. The neighbor address of this router is 10
C. The error may be caused by the incorrect peer AS number
D. Error Type indicates that the BGP error is caused by the neighbor relationship error
View answer
Correct Answer: C
Question #68
Which of the following parameters are not mandatory during the configuration of a BGP peer? (Choose all that apply.)
A. password
B. Peer IP address
C. as-number
D. description
View answer
Correct Answer: AD
Question #69
On an IS-IS network, routers send LSPs to exchange link state information. LSPs are classified intoLevel-1 LSPs and Level-2 LSPs and have the same format. Which of the following parts constitute theLSP ID in an LSP?
A. SP Number
B. seudonode ID
C. ystem ID
D. S Type
View answer
Correct Answer: ABC
Question #70
On an OSPF network, interfaces are classified into four types based on link layer protocols. Which ofthe following types can interfaces on an IS-IS network be classified into based on physical links?
A. 2P
B. roadcast
C. 2MP
D. BMA
View answer
Correct Answer: AB
Question #71
See the network shown in the following figure. R1 and R2 run IS-IS, and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2.Which of the following statements are true? (Choose all that apply.)
A. The routing table of R1 contains the route 10
B. The routing table of R1 does not contain the route 10
C. The routing table of R1 does not contain the routes 10
D. The routing table of R1 contains the route 10
View answer
Correct Answer: BD
Question #72
Which of the following statements regarding OSPF route summarization commands are true? (Choose all that apply.)
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
D. not-advertise is the default parameter of the abr-summary command
View answer
Correct Answer: BC
Question #73
Which of the following statements regarding the MED value in BGP are true? (Choose all that apply.)
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
View answer
Correct Answer: ABD
Question #74
Multiple BGP processes cannot be configured on the same router.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #75
Which of the following statements regarding the BGP error display of a router is false?
A. The error occurred at 11:40:39 on March 22, 2010
B. The neighbor address of this router is 10
C. The error may be caused by the incorrect peer AS number
D. Error Type indicates that the BGP error is caused by the neighbor relationship error
View answer
Correct Answer: C
Question #76
In the OSPF protocol, intra-area route calculation involves only Router LSA, Network LSA, and Summary LSA.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #77
Multiple BGP processes cannot be configured on the same router.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #78
Which of the following statements regarding the output information of a router is true?
A. This router and its neighbor 2
B. The router ID of the router is 1
C. The AS number of the router is 100
D. This router negotiates with its neighbor using BGP version 3
View answer
Correct Answer: C
Question #79
Which of the following statements about IS-IS Hello packets are true? (Choose all that apply.)
A. evel-1 LAN IIH packets do not contain the System ID field
B. 2P IIH packets and LAN IIH packets are exactly the same
C. 2P IIH packets do not contain the Priority field
D. evel-1 LAN IIH packets are sent in multicast mode
View answer
Correct Answer: CD
Question #80
To filter traffic, you can use the traffic-filter or MQC. The MQC can be applied in more views than the traffic- filter.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #81
See the network shown in the following figure. R1 and R2 run IS-IS, and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2.Which of the following statements are true? (Choose all that apply.)
A. The routing table of R1 contains the route 10
B. The routing table of R1 does not contain the route 10
C. The routing table of R1 does not contain the routes 10
D. The routing table of R1 contains the route 10
View answer
Correct Answer: BD
Question #82
Which of the following statements regarding an IP prefix are true?
A. AAn 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. BAn IP prefix filter cannot be used to filter data packets
C. CAn 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. DAn IP prefix filter can be used to filter data packets
View answer
Correct Answer: C
Question #83
Which of the following statements about the AC's mobility group are false? (Choose all that apply.)
A. STAs can roam only between ACs in the same mobility group
B. The mobility server must be an AC in the local mobility group
C. A mobility server needs to be specified for member ACs in a mobility group
D. ACs in the same mobility group encapsulate and transmit roaming information over the DTLS extended tunnel
View answer
Correct Answer: AB
Question #84
Which of the following statements regarding the display bgp routing-table command output is true?
A. The route to the destination address 192
B. The MED value of the route to the destination address 192
C. The route to the destination address 192
D. The route to the destination address 192
View answer
Correct Answer: D
Question #85
On the campus OSPF network shown in the following figure, the interfaces connecting the five routers are GE interfaces, and their costs are not changed. The import-route command is run on R1. After the network converges, the route to the server at 192.168.1.0/24 is queried on R2. Which of the following is the cost of this route?
A.
B.
C.
D.
View answer
Correct Answer: A
Question #86
Which of the following statements regarding the MED value in BGP are true? (Choose all that apply.)
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
View answer
Correct Answer: ABD
Question #87
Which of the following statements regarding OSPF AS-External-LSA are true? (Choose all that apply.)
A. Net mask is set to all 0s
B. Advertising Router is set as the router ID of an ASBR
C. Link State ID and Advertising Router can uniquely identify an AS-External-LSA
D. Link State ID is set as an address on the destination network segment
View answer
Correct Answer: BC
Question #88
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non- backbone areas and allows advertising routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
A. TRUE
B. FALSE
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Correct Answer: A

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