H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 36
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Which of the following statements regarding ABR is false?
- An ABR has multiple LSDBs and maintains one LSDB for each area.
- An ABR abstracts link state information within its connected non-backbone area as routing information and advertises the routing information within the backbone area.
- An ABR needs to abstract link state information within the backbone area as routing information and advertises the routing information within all non-backbone areas.
- An ABR can generate Tye 3 LSAs, Type 4 LSAs, and Type 5 LSAs.
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In the OSPF protocol, the unit of bandwidth-reference command is Mbit/s.
- TRUE
- FALSE
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Which of the following statements regarding the OSPF protocol is false?
- An ABR is connected to multiple areas and maintains the same LSDB for all areas.
- The metric of an AS-external-LSA can be specified during the import of external routes and defaults to 1.
- External roting information can carry a tag, the tag information is contained in a Type 5 or Type 7 LSA.
- The Link State ID in an ASBR-Summary-LSA is set as the router ID of this ASBR.
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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.
- TRUE
- FALSE
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Which of the following statements regarding the LSA header information in AS-External-LSA is false?
- Which of the following statements regarding the LSA header information in AS-External-LSA is false?
- Advertising Router indicates the router ID of an ASBR.
- Net mask indicates the network mask of the destination network segment.
- Forwarding Address is always 0.0.0.0.
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Which of the following statements regarding the alarm is fault “OSPF/2/IFAUTFAIL(OID)[1.3.6.1.2.1.14.16.2.6]: A packet is received on a non-virtual interface from a router whose authentication key or authentication type conflicts with the local authentication key or authentication type. (IfipAddress=[ip-address], AddressLessIf=[interface-index], ProcessId=[process-Id], RouterId=[router-id], PacketSrc=[source-ip-address], ConfigErrorType=[error-type], PacketType=[packet-type], InstanceName=[instance-name])”?
- Incorrect interface authentication configuration
- Inconsistent Hello intervals
- Unmatched subnet masks
- Inconsistent area IDs
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In an IS-IS broadcast network, which multicast MAC address is used by a Level-2 router as the destination address of sent IS-IS Hello packets?
- 0180-c200-0014
- 0180-c200-0016
- 0180-c200-0015
- 0100-5E00-0002
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Which of the following statements regarding IS-IS characteristics are true? (Choose three.)
- IS-IS supports various area features.
- IS-IS packet format is simple.
- IS-IS is suitable for large-capacity route transmission.
- IS-IS has good scalability.
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Multiple BGP processes cannot be configured on the same router.
- TRUE
- FALSE
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Which of the following messages are supported by BGP? (Choose three.)
- Keepalive
- Open
- Update
- Hello
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Which of the following statements regarding BGP route advertisement rules are true? (Choose three.)
- A BGP Speaker advertises all BGP routes to new peers immediately after they establish BGP connections.
- A BGP Speaker advertises all BGP routes to its peers.
- Generally, when multiple routes exist, a BGP Speaker adds only the optimal route into its routing table.
- A BGP Speaker advertises the routes learned from an EBGP peer to all BGP peers, including EBGP peers and IBGP peers.
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BGP routers establish peer relationships using UDP.
- TRUE
- FALSE
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Which of the following statements regarding Local-Preference is true?
- Local-Preference is a well-known mandatory attribute.
- Local-Preference affects traffic that enters an AS.
- Local-Preference can be transmitted between ASs.
- The default Local-Preference value is 100.
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Which of the following statements regarding AS_Path is false?
- AS_Path is a list of ASs that a BGP route passes through.
- AS_Path is a very important well-known mandatory attribute in BGP.
- BGP does not accept the routes whose AS_Path attribute contains the local AS number.
- When a router has two or more routes to the same destination, the router compares the AS_Path attributes of these routes and prefers the route with the longer AS_Path attribute.
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BGP is an interdomain routing protocol. Which of the following statements regarding BGP are true? (Choose two.)
- BGP uses a reliable transport protocol.
- BGP supports automatic neighbor discovery.
- BGP supports plaintext authentication.
- BGP supports rich routing policies.
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Which of the following statements regarding PIM-DM is false?
- PIM-DM stands for Protocol Independent Multicast-Dense Mode. It is a dense-mode multicast routing protocol.
- PIM-DM assumes that each subnet on a network has at least one receiver station interested in the multicast source.
- PIM-DM uses the graft mechanism to restore multicast packet forwarding proactively.
- PIM-DM does not have periodic flood-prune processes.
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Which of the following protocols support the any-source multicast (ASM) model? (Choose two.)
- PIM-SM and IGMPv2
- PIM-SSM and IGMPv3
- MBGP and MSDP
- PIM-DM and IGMPv2
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Which of the following statements regarding routing policies is true?
- Routing policies control packet forwarding based on destination addresses in the routing table.
- Routing policies are based on the forwarding plane and serve forwarding policies.
- A routing policy needs to be manually configured hop by hop to ensure that packets are forwarded according to the policy.
- A routing policy is configured using the policy-based route command.
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If one routing protocol only needs to import part of the routing information of another routing protocol and set attributes of the imported routes, only the route-policy can meet this requirement.
- TRUE
- FALSE
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Which of the following statements regarding join member interfaces are false when link aggregation works in manual mode?
- An Eth-Trunk cannot be nestled, and a member interface cannot be an Eth-Trunk.
- An Ethernet interface can join only one Eth-Trunk. Before adding an Ethernet interface to an Eth-Trunk, ensure that the Ethernet interface does not belong to any other Eth-Trunk.
- If the local device uses the Eth-Trunk, the remote interface directly connected to the member interface must join the Eth-Trunk so that both ends can communicate.
- An Eth-Trunk can work in Layer 2 or Layer 3 mode. The two working modes can be identified automatically and do not need to be switched manually.
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