CCNA系列认证CCNA系列认证综合练习章节练习(2019.05.01)

单项选择题
A network administrator is troubleshooing an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency. The retransmit interval and the queue counts for the adjacent routers also need to be checkeD.What command will display the required information?（）
A.Router# show ip eigrp adjacency
B.Router# show ip eigrp topology
C.Router# show ip eigrp interfaces
D.Router# show ip eigrp neighbors
多项选择题
如图，如果所有的链接都运行在相同的带宽，哪些端口会被STP指定的端口？（）
A. Switch A - Fa0/0
B. Switch A - Fa0/1
C. Switch B - Fa0/0
D. Switch B - Fa0/1
E. Switch C - Fa0/0
F. Switch C - Fa0/1
单项选择题
At which OSI layer is a logical path created between two host systems（）。
A.session
B.transport
C.network
D.data link
E.physical
单项选择题
A receiving host computes the checksum on a frame and determines that the frame is damaged.Theframe is then discarded.At which OSI layer did this happen?（）
A.session
B.network
C.physical
D.datalink
E.transport
单项选择题
A wireless client cannot connect to an 802.11b/g BSS with a b/g wireless carD.The client section of the access point does not list any active WLAN clients. What is a possible reason for this?（）
A.The incorrect channel is configured on the client.
B.The client's IP address is on the wrong subnet.
C.The client has an incorrect pre-shared key.
D.The SSID is configured incorrectly on the client.
多项选择题
Which two data intergrity algorithms are commonly used in VPN solutions?（）
A.HMAC-MD5
B.RSA
C.HMAC-SHA-1
D.DH1
E.DH2
单项选择题
DNS工作于（）。
A.网络层
B.传输层
C.会话层
D.表示层
E.应用层
单项选择题
Which command displays the CHAP authentication process as it occurs between two routers?（）
A.debug authentication
B.debug chap ppp
C.debug chap authentication
D.debug ppp authentication
单项选择题
哪种说法描述VRRP对象跟踪？（）
A.它监视交通流量和链路利用率。
B.它确保了最佳的VRRP路由器是虚拟路由器主的组。
C.它会导致流量动态地移动到更高的带宽链路。
D.它阻挠人在这方面的中间人攻击。
单项选择题
What is the default maximum number of equal-cost paths that can be placed into the routing of a cisco OSPF router？（）
A.16
B.2
C.unlimited
D.4