Networking Protocols Quiz

When a router looks up the FIB table, it selects the entry with the longest prefix match to forward the packet. Among them, which of the following flag parameters in the table entry indicates that the route is a gateway route, i.e., the next hop is a gateway?

• G

• H

• S

• D

In an OSPF network, when a DR Other router sends a DD (Database Description) packet to the DR/BDR, which of the following multicast addresses is used?

• 224.0.0.1

• 224.0.0.2

• 224.0.0.6

• 224.0.0.5

As shown in the figure, this is an enterprise OSPF network. The OSPF-related configuration of R1 is shown in the diagram. Which of the following statements about this subnet is incorrect?

• R1's GE0/0/1 interface will not be able to receive OSPF packets

• R2 can access the Server normally

• The network segment to which R1's GE0/0/1 interface belongs will not be advertised

• R1's GE0/0/1 interface will not be able to send OSPF packets

An enterprise uses Huawei routers to deploy an IS-IS network to achieve full network communication. Now, the engineer wants to modify the interface cost value to control route selection. Under default conditions, what is the maximum configurable cost value?

• 68

• 67

• 64

• 63

After a BGP neighbor relationship is established, under default conditions, how many seconds apart does the device send a Keepalive message to maintain the BGP connection?

• 180

• 30

• 60

• 10

When selecting routes, BGP strictly compares route attributes in order of priority. If a more preferred route can be selected based on an earlier attribute, BGP will not compare the later attributes. Therefore, when the following attributes appear, which one will BGP compare first?

• Local_Pref

• PrefVal

• Origin

• AS_Path

In a BGP network, Route-Policy can be invoked to modify route attributes. Which of the following descriptions regarding the use of route policies is incorrect?

• In the address family view, Route-Policy can be invoked through the peer command to modify the local preference of advertised routes.

• When importing OSPF routes using the import method, Route-Policy can be invoked to modify the default MED value.

• When importing direct routes using the import method, Route-Policy can be invoked to filter routes that are not desired to be advertised.

• When importing routes using network, Route-Policy cannot be invoked to modify the attributes of the imported routes.

Which of the following statements about PBR (Policy-Based Routing) and Route-Policy is incorrect?

• If both are configured with multiple nodes, they are matched according to node numbers from largest to smallest.

• If both are configured with multiple nodes, the relationship between nodes is 'OR'.

• Both can be configured with one or more nodes.

• If both are configured with multiple condition clauses, the relationship between condition clauses is 'AND'.

As shown in the figure, R1 imports the direct route 10.1.1.0/24 into OSPF. Currently, the user performs bidirectional route redistribution on R2 and R3. After the network stabilizes, when the user views the 10.1.1.0/24 route entry in the routing table on R3, what will its Pre value be?

• 0

• 10

• 150

• 15

As shown in the figure, R1 imports the direct route 10.1.1.0/24 into OSPF. Currently, the user performs bidirectional route redistribution on R2 and R3. R3 is configured with the following commands. After the network stabilizes, when the user views the 10.1.1.0/24 route entry in the routing table on R4, what will its Pre value be?