A. All routers running the RIPv2 protocol listen 224.0.0.100.

B. All routers listen 224.0.0.2.

C. All hosts and routers in the network segment listen 224.0.0.1.

D. All routers running OSPF protocol listen 224.0.0.5.

A. RIP can deliver default routes.

B. Static routes can be used to deliver default routes.

C. BGP can deliver default routes.

D. OSPF cannot deliver default routes.

A. Local-Preference can be spread across AS.

B. Local-Preference affects the traffic entering the AS.

C. Local-Preference is recognized as mandatory.

D. The default value of Local-Preference is 100.

A. Less than 20 units

B. Less than 40 units

C. Less than 10 units

D. Less than 30 units

A. Source address

B. Source MAC

C. Packet length

D. Destination address

A. If the host sends an IGMP host report, the switch deletes the multicast entry corresponding to the host.

B. The Layer 2 switch establishes and maintains a MAC broadcast address table at Layer 2 by continuously monitoring IGMP messages.

C. When IGMP Snooping is not running, multicast packets will be broadcast on Layer 2. After IGMP Snooping is run, packets will not be broadcast on Layer 2 but Layer 2 multicast.

D. If the IGMP leave message sent by the host, the switch adds the host to the corresponding multicast table.

A. Clients wishing to access PCs from different ports cannot communicate with each other, which can achieve through port isolation.

B. Port isolation is an access control security control mechanism between switch ports.

C. Port isolation can be isolated based on VLANs.

D. Port isolation is isolation of physical layer.

A. The receiver DR is responsible for sending Join messages to the multicast source or RP.

B. The source DR is responsible for sending Register messages with multicasting to the RP.

C. In the network segment DR election, when the DR priority is the same, the bigger IP address is elected.

D. Assert Winner on the shared network segment may not be the network segment DR.

A. In the Idle state, BGP rejects any access connection request and is the BGP initial state.

B. In the Established state, BGP peers can exchange Update messages, Route-refresh messages, Keepalive messages, and Notification messages.

C. The status of both BGP peers must be OpenConfirm before the BGP neighbor relationship can be established. The two parties exchange routing information through Update messages.

D. In the Active state, BGP will attempt to establish the access TCP connection, which is the intermediate state of BGP.

A. The BGP route uses the As-Path attribute and the list of AS that is recorded in the path of the transmission. In the routing rule, the router with short AS-Path is priority.

B. Nexthop is a recognized mandatory attribute of BGP routing.

C. BGP does not accept routes containing the AS number in the AS-Path attribute.

D. The BGP route uses the AS-Path attribute and the list of AS that is recorded in the path of the transmission. In the routing rule, the router with short AS-Path is priority, and the AS-PATH attribute is also checked in IBGP.

A. OSPF has two route aggregation modes: ABR aggregation and ASBR aggregation

B. Through route aggregation, routing information can be reduced, thereby reducing the size of the routing table and improving the performance of the router.

C. Route aggregation can be performed on any router in OSPF

D. Route aggregation means to aggregate the routing information of the same prefix and only advertise one route to other areas.

A. IBGP neighbors are non-physically connected.

B. BGP synchronization is enabled in the fully interconnected IBGP neighbor relationship.

C. The update time between the two BGP neighbors is inconsistent.

D. ACLs that block all TCP connections are configured between the two BGP neighbor relationships.

A. FALSE

B. TRUE

A. FALSE

B. TRUE