QUESTION 161
On an OSPF network, different device roles generate different types of LSAs that vary in function. Which of the following types of LSAs cannot be generated by a pure ASBR?

A. Type 3 LSA
B. Type 7 LSA
C. Type 4 LSA

D. Type 2 LSA

Correct Answer: D
QUESTION 162
OSPF has various several areas, such as stub areas and NSSAs. Such areas can be configured to reduce the number of LSAs. Which of the following statements are true about a stub area?

A. All routers in a stub area must be configured with stub attributes.
B. A stub area cannot receive AS external routes.
C. The backbone area can be configured as a stub area.
D. Virtual links cannot traverse a stub area.

Correct Answer: AD
QUESTION 163
On an OSPF network, two routers exchange DD packets after establishing a neighbor relationship. The DD packets contain multiple fields. Drag the following fields to their meanings.

Select and Place:

Correct Answer:

QUESTION 164
A large number of external routes are imported to an NSSA of an enterprise’s OSPF network. The customer requires that the number of LSAs in non-special areas be reduced. To meet this requirement, route summarization can be configured on an ABR in the NSSA to summarize the routes corresponding to the Type 5 LSAs translated from Type 7 LSAs.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 165
On an OSPF network, if the network type is NBMA, a router unicasts al protocol packets; if the network type is broadcast, a router multicasts all protocol packets.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 166
On an IS-IS network, all routers generate LSPs. Which of the following types of information is not contained in the LSPs generated by pseudocodes?

A. Information about supported network protocols
B. Route information
C. Neighbor information
D. Interface information

Correct Answer: B
QUESTION 167
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

Correct Answer: A
QUESTION 168
On an IS-IS network that uses the Ethernet link layer protocol, all routers need to establish neighbor relationships with each other by default.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 169
Similar to the OSPF DR, the IS-IS DIS needs to be elected on a broadcast network. However, the OSPF DR is preemptive by default, whereas the IS-IS DIS is not preemptive by default.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 170
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. R2
B. R4
C. R1
D. R3

Correct Answer: D
QUESTION 171
BGP selects routes by comparing route attributes in sequence. When a route attribute alone helps determine the optimal route, BGP does not compare subsequent attributes. Which of the following attributes is compared first during BGP route selection?

A. AS_Path
B. Prefval
C. Origin
D. Local_Pref

Correct Answer: B
QUESTION 172
Which of the following statements is false about the default processing of the next hop address when a BGP device advertises a route?

A. When advertising a route to an EBGP peer, a BGP device sets the next hop address to the IP address of its interface connected to the peer.
B. When advertising a locally originated route to an IBGP peer, a BGP device sets the next hop address to the IP address of its interface connected to the peer.
C. When advertising a non-labeled route received from an EBGP peer to an IBGP peer; a BGP device changes the next hop address to the IP address of its interface connected to the IBGP peer.
D. A BGP device does not change the next hop address of a route if the route is received from an IBGP peer and is to be sent to another IBGP peer.

Correct Answer: C
QUESTION 173
When a router running BGP is in the Connect state, BGP starts the ConnectRetry timer and waits for a TCP connection to be established. If BGP does not receive any response from a BGP peer throughout the ConnectRetry timer, BGP attempts to establish TCP connections with other BGP peers and remains in the Connect state.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 174
The AS_ Path attribute is an important BGP attribute used for route selection. Which of the following statements are true about this attribute?

A. This attribute can be used to prevent BGP routing loops.
B. This attribute is a well-known discretionary attribute that must be identified by all BGP routers.
C. When a route is advertised to am IBGP peer, the AS_Path remains unchanged.
D. BGP ignores AS_Confed_Sequence and AS_Confed_ Set when calculating the AS_Path length.

Correct Answer: ACD
QUESTION 175
BGP is generally applied to complex networks where routes change frequently. Frequent route flapping consumes a large number of bandwidth and CPU resources, and even affects the normal operation of the network. This is an unavoidable problem that cannot be solved in BGP.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 176
A route-policy can contain multiple nodes, each of which can be configured with multiple if-match and apply clauses. The apply clauses of a node are executed only when a route matches all the if-match clauses of the node.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 177
An IP prefix list is a common matching tool in routing policies. When an IP prefix list is configured on a Huawei router, which of the following parameters are optional?

A. Index of the prefix list
B. Mask length
C. Shortest mask length to be matched
D. Longest mask length to be matched

Correct Answer: CD
QUESTION 178
On an RSTP network, port priorities may be compared during root port or designated port election. Which of the following values is the default priority of a port on a Huawei switch?

A. 32768
B. 128
C. 1
D. 4096

Correct Answer: B
QUESTION 179
MSTP divides a switched network into multiple regions, each of which has multiple spanning trees that are independent of each other. Which of the following statements is false about MST regions?

A. A LAN can have multiple MST regions that are physically connected directly or indirectly.
B. You can add multiple switching devices to the same MST region using MSTP configuration commands.
C. Switching devices in the same MST region can be configured with different region names.
D. An MST region consists of multiple switching devices on a switched network and the network segments between them.

Correct Answer: C
QUESTION 180
There are two types of routing entries on a PIM network. (S, G) routing entries are used to set up on a PIM network and are applicable to both PIM-DM and PIM-SM networks. (Enter the acronym in uppercase letters.)
Correct Answer: SPT