CCIE系列认证CCIE 415Q单项选择题每日一练(2018.10.15)

单项选择题
On the basis of the definitions of different services in various RFCs， traffic with Expedited Forwarding per-hop behavior should be marked as which of these？（）
A.IP ToS of 0xEF
B.IP experimental ECN
C.DSCP decimal 5
D.Binary value of 101110
单项选择题
Which router is doing LSA type 7 to type 5 translation，and why？（）
A.Both RTA and RTB will do LSA7/5 translation，since they are both NSSA ABRs
B.RTA will do LSA7/5 translation，since it has the lower router ID
C.RTB will do LSA7/5 translation，since it has the higher router ID
D.The redistributing router will do LSA7/5 translation，since it is within the NSSA
单项选择题
In which way can the IPv6 address of 2031：0000：130F：0000：0000：09C0：876A：130B be expressed most efficiently？（）
A.2031：0：130F：0：0：09C0：876A：130B
B.2031：：130F：：9C0：876A：130B
C.2031：0：130F：：9C0：876A：130B
D.2031：0：130F：0：0：9C0：876A：130B
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
A branch router is configured with an egress QoS policy that was designed for a total number of 10 concurrent VOIP Calls. Due to Expansion， 15 VOIP Calls are now running over the link， but after the 14th call was established， all calls were affected and the voice quality was dramatically degraded. Assuming that there is enough bandwidth on the link for all of this traffic， which part of the QOS configuration should be updated due to the new traffic profile？（）
A.Increase the shaping rate for the priority queue.
B.Remove the policer applied on the priority queue.
C.Remove the shaper applied on the preiority queue.
D.Increase the policing rate for the priority queue.