单项选择题

Which of the following NTP command specifies that a router is in the Eastern time zone， which isfive hours behind GMT？（）

A.timezone EST -5
B.clock timezone GMT -5
C.dock GMT -5
D.clock EST-5
E.NTP timezone EST -5
F.dock timezone EST -5

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多项选择题

Which of the following scenarios are likely reasons for an EtherChannel to fail？（）

A.Mismatched EtherChannel protocol
B.Mismatched EtherChannel port selection
C.Mismatched EtherChannel distribution algorithm
D.Mismatched trunk mode
E.Mismatched native VLAN
F.Mismatched link speed

单项选择题

Which of the following types of NAT allows multiple private internal IP addresses to use a singlepublic external IP address？（）

A.NAT mapping
B.NAT overloading
C.NAT caching
D.Static NAT
E.Dynamic NAT
F.Overlapping NAT

多项选择题

Which of the following characteristics are true assuming you are troubleshooting a networkcurrently enabled for VRRP？（Choose all that apply.）（）

A.The network is load balancing among different members of the VRRP group
B.The default hello timers are 1 second
C.The interface IP address is being used as the virtual IP address
D.There are several routers in the group simultaneously forwarding traffic for the group
E.It is a Cisco Proprietary protocol
F.The default hello timers are 3 seconds