NEW QUESTION 1
Which of the following is used to avoid routing loops in BGP?

• A. Use ORIGIN attribute to record the origin of the route.
• B. Use AS_PATH attribute to record all AS areas that a route passes.
• C. Use NEXTJHOP attribute to record next hop path
• D. Use MED attribute to influence export selection of other Ass

Answer: B

NEW QUESTION 2
Which of the following statements regarding the Reverse Path Forwarding (RPF) mechanism are true?(Select 2 answers)

• A. Multicast RPF does not depend on unicast routing.
• B. All multicast protocols adopt the RPF mechanism.
• C. A router discards the received multicast packets if the RPF check fails.
• D. The RPF mechanism has two functions: It prevents multicast routing loops and the forwarding of redundant multicast packets.

Answer: CD

NEW QUESTION 3
Default routes between routers are a low-cost solution because theyare easy to configure and requires less system resources when compared with maintaining a complete routing table.

• A. TRUE
• B. FALSE

Answer: A

NEW QUESTION 4
Which of these statements is false when using the import-route command to import routes into BGP?

• A. The import-route command can import IGP routes, direct routes, and static routes into BGP.
• B. A process ID must be specified if OSPF routes or RIP routes are imported into BGP.
• C. By default, the origin attribute of imported routes is IGP.
• D. Routing policies filters the routes imported from other routing protocols.

Answer: C

NEW QUESTION 5
Which of the following situatbns will occur when the command multicast bad balance" is configured?(Select 3 answers)

• A. If there exists no unicast equal-cost routes, multicast load balancing fails.
• B. If group address-based load splitting is employed, balanced distribution of entries over equal-cost routes cannot be ensured due to hash function limitations.
• C. Balanced distribution of entries over equal-cost routes can be ensured as long as multicast load balancing is performed.
• D. During multicast load splitting, traffic may not be balanced among equal-cost routes because multicast load balancing is based on multicast entries not multicast data packets.

Answer: ABD

NEW QUESTION 6
Which statement regarding BGP is false?

• A. BGP runs over TCP.
• B. BGP is an enhanced distance-vector routing protocol.
• C. BGP uses port number 189.
• D. BGP is an inter-AS routing protocol.

Answer: C

NEW QUESTION 7
An OSPF neighbor relationship fails to establish and the OSPF error information is displayed as follows. Which of the following is most likely the cause?

• A. Router IDs conflict.
• B. Area IDs are mismatched.
• C. Network masks are inconsistent.
• D. Authentication types are inconsistent.

Answer: A

NEW QUESTION 8
Type 2-external route should always take precedence over a Type 1-external route.

• A. TRUE
• B. FALSE

Answer: B

NEW QUESTION 9
Which of the following statements regarding an AS-external-LSA are true? (Select 3 answers)

• A. The Link State ID field specifies the network segment address of an advertised destination.
• B. The Advertising Router field specifies the Router ID of an ASBR.
• C. The Net mask field specifies the network mask of an advertised destination.
• D. The Link State ID together with Advertising Router fields are used to uniquely identify an AS-external-LSA.

Answer: ABC

NEW QUESTION 10
Which of the following statements are correct regarding how OSPF detects old or duplicate LSAs? (Select 3 answers)

• A. The lower the sequence number, the more recent the LSA.
• B. The smaller the LS age, the more recent the LSA.
• C. A router uses 0x80000001 as the sequence number when it generates the first LSA.
• D. An LSA can be flushed from the routing domain by setting its LS age to equal the Maxage.

Answer: BCD

NEW QUESTION 11
OSPF supports two authentication modes: area authentication and interface authentication. These two modes cannot be configured at the same time.

• A. TRUE
• B. FALSE

Answer: B

NEW QUESTION 12
Which of the following multicast protocols can generate multicast distribution trees?

• A. MBGP
• B. MSDP
• C. IGMP
• D. PIM

Answer: D

NEW QUESTION 13
The default-route originate command in the RIP protocol advertises a default RIP route to the peers. When using this command, which of the following attributes can be set for the default route?

• A. Tag
• B. Cost
• C. Interface
• D. Nexthop

Answer: B

NEW QUESTION 14
Which is the origin attribute of the BGP routes redistributed using the import-route command?

• A. IGP
• B. EGP
• C. Incomplete
• D. Unknown

Answer: C

NEW QUESTION 15
Which of the following BGP attributes are well known mandatory attributes? (Select 3 answers)

• A. ORIGIN
• B. AS_PATH
• C. NEXT_HOP
• D. MED
• E. LOCAL_PREF
• F. COMMUNITY

Answer: ABC

NEW QUESTION 16
Generally, the performance of an IP-prefix-filter is greater than that of an ACL.

• A. TRUE
• B. FALSE

Answer: A

NEW QUESTION 17
Which statement about OSPF is false?

• A. Hello messages are used as a form of greeting to discover other routers on its networks and establish relationships between neighboring device
• B. On broadcast or NBMA networks, Hello messages can also be used to elect a DR or a BDR.
• C. DD packets describe the summary LSDB information by carrying LSA headers.
• D. The intervals at which two routers send Hello messages must be consistent; otherwise, cannot be established relationships between neighboring devices.
• E. DD packets contain headers of all LSAs for periodic LSDB synchronization between OSPF neighbors.

Answer: D

NEW QUESTION 18
What is the default network mask length of 219.25.23.56?

• A. 8
• B. 16
• C. 24
• D. 32

Answer: C

NEW QUESTION 19
Which of the following statements regarding the MED attribute are true? (Select 3 answers)

• A. Based on BGP route selection rules, the MED has precedence over the AS_Path, Preferred-Value, Local-Preference, and Origin attributes.
• B. The MED of a BGP route is 100 by default.
• C. Generally, BGP compares only the MEDs of routes received from the same AS but if the"compare-different-as-med" command is configured, BGP can compare the MEDs of the routes received from multiple ASs.
• D. the default MED value 0 on a BGP indicates that the route is not specifie
• E. If the bestroute med-none-as-maximum command is configured, the maximum MED value that can be set is 4294967295.

Answer: ACD