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单选题
You have a network that supports VLSM and you need to reduce IP address waste in your point to point WAN links. Which of the masks below would you use?（）
A
/38
B
/30
C
/27
D
/23
E
/18
F
/32
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单选题You have a network containing 120 routers. You must establish and maintain connectivity between the loopback interfaces of all routers. Because of the critical services using the network, you need redundancy and fast failover. Which routing protocol should you use in this scenario?（）A
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单选题You are the network administrator setting up the IP network for a new branch office. You need at least 5 networks with 25 hosts each. You have been allocated a /24 network.Which prefix length will satisfy the given requirements?（）A
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考题
单选题You are an administrator of a switched network and your goal is to reduce some of the administrative overhead on your network. You plan on achieving this by configuring a new VLAN for each department in your network. However, you need to share the VLAN information across numerous switches throughout your network. Which of the following would allow you accomplish this?（）A
STPB
GVRPC
SNMPD
VTPE
DHCP
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单选题You have a Class C network, and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?（）A
255.255.255.192B
255.255.255.224C
255.255.255.240D
255.255.255.248E
None of the above
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Upgrade the switchesB
Configure BPDU guardC
Configure VLAN access listsD
Configure port securityE
Configure Dynamic ARP inspection
考题
单选题You are a network administrator and you need to implement a routing protocol on your network that provides: * Scalability * VLSM support * Minimal overhead * Support for connecting networks using routers of multiple vendors Which of the following routing protocol would best serve your needs?（）A
VTPB
RIP version 1C
EIGRPD
OSPFE
IGRPF
CDP
考题
单选题You have a class C network, and you need to design it for 5 usable subnets with each subnet handling a minimum of 18 hosts each. Which of the following network masks should you use?（）A
225.225.224.0.B
225.225.240.0.C
225.225.255.0.D
255.255.255.224E
225.225.255.240
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