单项选择题

Refer to the exhibit. Which switching feature is being tested?（）

A.loop guard
B.PortFast
C.root guard
D.BDPU guard

相关考题

CustomerXhasahub-and-spokeFrameRelaynetwork，withacentra...

单项选择题Customer X has a hub-and-spoke Frame Relay network， with a central office and two branch offices （RemoteA and RemoteB）. Each location has only one physical link to the Frame Relay cloud and RemoteB has a router that is not a Cisco router. Since the installation， there is no connectivity between RemoteB and the central office. What is a possible solution to this issue？（）

A.Because Frame Relay IETF encapsulation is only configurable at interface level， you must use IETF encapsulation on all routers.
B.This is not a possible scenario. A dedicated Frame Relay link to RemoteB is mandatory at the central office.
C.The router at RemoteB must be replaced by a Cisco router.
D.Use Frame Relay IETF encapsulation on a per-VC basis on the central office router.
E.There is a problem in the Frame Relay cloud， because Cisco routers are compatible with IETF Frame Relay.

问10.1.1.0/24 10.1.2.0/24可以将这两条路由汇总成最短的掩码是什么？

问答题问10.1.1.0/24 10.1.2.0/24可以将这两条路由汇总成最短的掩码是什么？

ThenetworkadministratorwantstoenableanEtherChannelbetwe...

多项选择题The network administrator wants to enable an EtherChannel between two switches in "on" mode. The administrator connects the cables and enables the interfaces， but while configuring the EtherChannel in the first switch， a spanning-tree loop was detected. Which two of these procedures can avoid this problem？（）

A.Configure the EtherChannel as "desirable" first.
B.Assign all interfaces to the same VLAN.
C.Disable PortFast on the interfaces in the EtherChannels.
D.Disable all interfaces first.
E.Fast Ethernet and Gigabit Ethernet ports cannot be assigned to the same EtherChannel.
F.Fix cabling problems.

CCIE系列认证综合练习

Refer to the exhibit. Which switching feature is being tested?（）