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2021 Mar 400-101 rapidshare

Q491. Which two methods can you use to limit the range for EIGRP queries? (Choose two.) 

A. Use an access list to deny the multicast address 224.0.0.1 outbound from select EIGRP neighbor and permit everything else. 

B. Configure route tagging for all EIGRP routes. 

C. Summarize routes at the boundary routers of the EIGRP domain. 

D. Configure unicast EIGRP on all routers in the EIGRP domain. 

E. Configure stub routers in the EIGRP domain. 

F. Use an access list to deny the multicast address 224.0.0.10 outbound from select EIGRP neighbors and permit everything else. 

Answer: C,E 


Q492. Which term describes an EIGRP route that has feasible successors? 

A. active 

B. passive 

C. redistributed 

D. invalid 

Answer:

Explanation: 

A topology table entry for a destination can have one of two states. A route is considered in the Passive state when a router is not performing a route recomputation. The route is in Active state when a router is undergoing a route recomputation. If there are always feasible successors, a route never has to go into Active state and avoids a route recomputation. 

When there are no feasible successors, a route goes into Active state and a route recomputation occurs. A route recomputation commences with a router sending a query packet to all neighbors. Neighboring routers can either reply if they have feasible successors for the destination or optionally return a query indicating that they are performing a route recomputation. While in Active state, a router cannot change the next-hop neighbor it is using to forward packets. Once all replies are received for a given query, the destination can transition to Passive state and a new successor can be selected. 

Reference: http://docwiki.cisco.com/wiki/Enhanced_Interior_Gateway_Routing_Protocol 


Q493. Which statement about Cisco Discovery Protocol is true? 

A. The multicast address 0100.0cdd.dddd is used as the destination address for periodic advertisements. 

B. An inactive VLAN that is configured on an access port passes periodic Cisco Discovery Protocol advertisements. 

C. The multicast address 0100.0ccc.ccd is used as the destination address for periodic advertisements. 

D. A VLAN must be active on an access port before periodic Cisco Discovery Protocol advertisements are passed. 

Answer:

Explanation: 

All CDP packets include a VLAN ID. If you configure CDP on a Layer 2 access port, the CDP packets sent from that access port include the access port VLAN ID. If you configure CDP on a Layer 2 trunk port, the CDP packets sent from that trunk port include the lowest configured VLAN ID allowed on that trunk port. CDP messages on the active physical interfaces (Ethernet NIC) to a well-known multicast address (0100.0CCC.CCCC. 


Q494. Refer to the exhibit. 

Which two configuration changes enable you to log in to the router? (Choose two.) 

A. Configure a user name and password on the device. 

B. Modify the default login authentication group to use the terminal line password. 

C. Remove the terminal line password on the console line. 

D. Modify the terminal lines to include transport input none. 

E. Configure the terminal lines to use the local user database. 

Answer: A,B 


Rebirth 400-101 exam:

Q495. DRAG DROP 

Drag and drop each BGP feature on the left to the corresponding function it performs on the right. 

Answer: 


Q496. Which two pieces of information does RTCP use to inform endpoint devices about the RTP flow? (Choose two.) 

A. the transmitted octet 

B. the lost packet count 

C. session control function provisioning information 

D. the CNAME for session participants 

E. the authentication method 

F. MTU size changes in the path of the flow 

Answer: A,B 

Explanation: 

RTCP transports statistics for a media connection and information such as transmitted octet and packet counts, packet loss, packet delay variation, and round-trip delay time. An application may use this information to control quality of service parameters, perhaps by limiting flow, or using a different codec. 

Reference: http://en.wikipedia.org/wiki/RTP_Control_Protocol 


Q497. Which two statements about the passive-interface command are true? (Choose two.) 

A. A RIP router listens to multicast updates from its neighbor but stops sending multicast updates on the passive interface. 

B. In OSPF, configuring passive-interface at the interface level suppresses hello packets for the interface and all sub interfaces. 

C. An EIGRP router can form neighbor relationship on the passive interface, but incoming and outgoing multicast updates are disabled on the interface. 

D. A RIP router disables all incoming and outgoing multicast updates in the passive interface. 

E. In EIGRP, the passive interface stops sending hello packets. 

F. In OSPF, the passive interface can receive incoming routing updates and update the device routing table. 

Answer: A,E 


Q498. DRAG DROP 

Drag and drop the fragmentation characteristics on the left to the corresponding protocol on the right. 

Answer: 


Q499. Which EEM event detector is triggered by hardware installation or removal? 

A. Enhanced-Object-Tracking Event Detector 

B. Resource Event Detector 

C. OIR Event Detector 

D. CLI Event Detector 

Answer: