CCIE系列认证单项选择题每日一练(2019.07.25)

单项选择题
In GLBP， which router will answer on client ARP requests？（）
A.all active AVF routers as the first response is used by the client
B.the AVG router，replying with a different AVF MAC address each time
C.a random AVF router， based on a GLBP seed hash key
D.only the AVG router that received the ARP request first
单项选择题
An architecture that utilizes PPPoE deals with IP address allocation by what type ofnegotiation？（）
A.NIS
B.IPCP
C.RADIUS
D.LDAP
单项选择题
In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicasttraffic to a group？（）
A.The source must send a PIM Register message to the rendezvous point （RP）.
B.The source must first join the multicast group using IGMP before sending.
C.The source must perform a Request to Send （RTS） and Clear to Send （CTS） handshake with the PIM designated router （DR）.
D.No control plane signaling needs to be performed； the source can simply begin sending on the local subnet.
单项选择题
Refer to the exhibit. Routers A and B are directly connected and running EIGRP， but they are unable to form a neighbor relationship. What is the most likely cause？（）
A. The network statements are misconfigured.
B. The IP address statements are misconfigured.
C. The autonomous system is misconfigured.
D. There is a physical issue with the cable.
单项选择题
You use OSPF as your network routing protocol. You use the command show ip route and you see several routes described as O，O IA，O E1，and O E2. What routes are in your area？（）
A.O IA
B.O E1
C.O E2
D.O