单项选择题

What is the recommended practice regarding UDLD when implementing it in all fiber-optic LANports？（）

A. Adjust the default hello timers to three seconds for aggressive mode
B. Enable it in global mode and on every interface you need to support
C. Enable it in global mode to support every individual fiber-optic interface
D. Enable it to create channels containing up to eight parallel links between switches

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单项选择题

Wh.ch version of spanning tree is recommended for the enterprise campus？（）

A. CST
B. MST
C. STP
D. PVST+
E. PVRST+

多项选择题

Which two statements correctly identify considerations to take into account when deciding onCampus QoS Design elements？（）

A. Voice needs to be assigned to the hardware priority queue
B. Voice needs to be assigned to the software priority queue
C. Call signaling must have guaranteed bandwidth service
D. Strict-priority queuing should be limited to 50 percent of the capacity of the link
E. At least 33 percent or the link bandwidth should be reserved tor default best effort class

单项选择题

Which of the following is true regarding the effect of EIGRP queries on the network design？（）

A. EIGRP queries will be the most significant issue with respect to stability and convergence
B. EIGRP queries are not a consideration as long as EIGRP has a feasible successor with a nexthop AD that is greater than the FD of the current successor route
C. EIGRP queries will only increase the convergence time when there are no EIGRP stubsdesigned in the network