多項(xiàng)選擇題Which two of these are characteristics of the 802.1Q protocol?()

A. it is a layer 2 messaging protocol which maintains vlan configurations across network.
B. it includes an 8-bit field which specifies the priority of a frame.
C. it is used exclusively for tagging vlan frames and dose not address network reconvergence following switched network topology changes.
D. it modifies the 802.3 frame header,and thus requires that the FCS be recomputed.
E. it is a trunking protocol capable of carring untagged frames.


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1.多項(xiàng)選擇題Which two data link layers are supported by cisco ios software for IPv6?()

A.PPP
B.FDDI
C.Frame Relay PVC
D.NBMA
E.Frame Relay SVC

2.多項(xiàng)選擇題Which three statements accurately describe layer 2 Ethernet switches?()

A. Microsegmentation decreases the number of collisions on the network.
B. if a switch receives a frame for an unkown destination,it uses ARP to resolve the address.
C. Spanning Tree Protocol allows switches to automatically share vlan information.
D. In a properly functioning network with redundant switched paths,each switched aegment will contain one root bridge with all its ports in the forwarding state.All other switches in that broadcast domain will have only one root port.
E. Establishing vlans increases the number of broadcast domains.
F. Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3 address information.

3.多項(xiàng)選擇題Which two commands can be used to verify a trunk link configurationt status on a given cisco switch?()

A. show interfaces interface
B. show interfaces interface trunk
C. show interfaces interface switchport
D. show ip interface brief
E. show interfaces vlan

4.多項(xiàng)選擇題Which commands are required to properly configure a router to properly configure a router to run OSPF and to add network 192.168.16.0/24 to OSPF area 0?()

A. Router(config)#router ospf 1
B. Router(config)#router ospf 0
C. Router(config)#router ospf area 0
D. Router(config-router)#network 192.168.16.0 0.0.0.255 area 0
E. Router(config-router)#network 192.168.16.0 0.0.0.255 0
F. Router(config-router)#network 192.168.16.0 255.255.255.0 area 0

5.多項(xiàng)選擇題Which two statements describe the advantages to the use of RIP over the use of OSPF?()

A. RIP requires less time to converge
B. RIP uses less bandwidth
C. RIP is less complex to configure
D. RIP demands fewer router resources
E. RIP has a more accurate metric

6.多項(xiàng)選擇題Which three elements must be used when you configure a router interface for vlan trunking?()

A. one IP network or subnetwork for each subinterface
B. subinterface numbering that matches vlan tages
C. subinterface encapsulation identifiers that match vlan tags
D. a management domain for each subinterface
E. one physical interface for each subinterface
F. one subinterface per vlan

7.多項(xiàng)選擇題Which of the following describes the roles of devices in a WAN?()

A. A CSU/DSU terminates a digital local loop
B. A modem terminates a digital local loop
C. A CSU/DSU terminates an analog local loop
D. A modem terminates an analog local loop
E. A router is commonly considered a DTE device
F. A router is commonly considered a DCE device

8.多項(xiàng)選擇題Which of the following are key characteristics of PPP?()

A. can be used over analog circuits
B. maps Layer 2 to Layer 3 address
C. encapsulates several routed protocols
D. supports IP only
E. provides error correction

9.多項(xiàng)選擇題Which can be done to secure the virtual terminal interfaces on a router?()

A. Administratively shut down the interfaces.
B. Physically secure the interfaces.
C. Configure a virtual terminal password and login process.
D. Enter an access list and apply it to the terminal interfaces using the access-class command.
E. Create an access list and apply it to the terminal interfaces using the access-group command.

10.多項(xiàng)選擇題Which two are features of IPv6?()

A.multicast
B.broadcast
C.allcast
D.podcast
E.anycast

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What is the subnetwork address for a host with the IP address 201.100.5.68/28?()

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Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?()

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If all OSPF routers in a single area are configured with the same priority value,what value dose a router use for the ODPF router ID in the absence of a loopback interface?()

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