Refer to the exhibit. A network engineer received a sudden request to prioritize voice over his Cisco network and he has decided to leverage the AutoQoS feature. Based on the output shown, which two tasks need to be performed prior to issuing the autoqos voip command in this router? （）

单项选择题WhatsthedefaultstratumclockonaCiscorouter，whenyouseethekeyword master configuredontheNTPline？（）

A.1
B.2
C.4
D.6
E.8

单项选择题Refer to the exhibit. This exhibit shows the NAT configuration for Router A and the output for a ping issued from device 171.68.200.48 and destined to 172.16.47.142. Based on this information， what change must be made to Router A in order for the ping to work？（）

A.reload the router
B.clear the route cache
C.add a static route
D.configure IP as classless
E.load a newer IOS image

单项选择题Refer to the exhibit. Based on this configuration, what type of marker is achieved?（）

A.Single-rate，two-color marker
B.Three-rate，two-color marker
C.Two-rate，three-color marker
D.Single-rate，three-color marker

单项选择题You work as a network technician at Company.com， study the exhibit provided. You are implementing this QoS configuration to improve the bandwidth guarantees for traffic towards two servers， one with the IP address 5.5.5.5 and the other with the IP address 5.5.5.4. Even after the configuration is applied， performance does not seem to improve. Which will be the most likely cause of this problem？（）

A.The policy map mark has been applied on a half-duplex Ethernet interface；This is not supported.
B.The policy map queue is configured on the wrong interface； it is applied on the Serial interface whereas traffic is going over the tunnel interface.
C.The class maps are wrongly configured
D.The ip nbar protocol-discover command cannot be configured together with a Service policyoutput on the serial interface.
E.This is probably a software bug

多项选择题Refer to the exhibit. According to the output of the command show tag-switching forwarding-table, which four of these statements are true?（）

A.Packets to the IP address 10.10.10.5/32 will be tagged with "17" toward the next hop.
B.Label "19" will be advertised to MPLS neighbors so that they can use this label to reach the IP address 10.10.10.6/32.
C.IP address 10.10.10.4/32 is directly connected to the neighbor router on serial 3/0.
D.Packets arriving with label "17" will be forwarded without any label toward serial 4/0.
E.Packets arriving with label "20" will be forwarded with label "21" after label-swapping.
F.Label "20" is advertised to MPLS neighbors so that they can use this information to reach the prefix 10.10.10.8/32.