多項(xiàng)選擇題What are two advantages of Layer 2 Ethernet switches over hubs?()

A.decreasing the number of collision domains
B.filtering frames based on MAC addresses
C.allowing simultaneous frame transmissions
D.increasing the size of broadcast domains
E.increasing the maximum length of UTP cabling between devices


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

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

3.多項(xiàng)選擇題Which two statements apply to dynamic access lists?()

A.they offer simpler management in large internetworks.
B.you can control logging messages.
C.they allow packets to be filtered based on upper-layer session information.
D.you can set a time-based security policy.
E.they provide a level of security against spoofing.
F.they are used to authenticate individual users.

4.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.

6.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

7.單項(xiàng)選擇題

Refer to the exhibit.Give this output for SwitchC, what should the network administrator’s next action be?()

A.Check the trunk encapsulation mode for SwitchC’s fa0/1 port.
B.Check the duplex mode for SwitchC’s fa0/1 port.
C.Check the duplex mode for SwitchA’s fa0/2 port.
D.Check the trunk encapsulation mode for SwitchA’s fa0/2 port.

8.單項(xiàng)選擇題Which PPP subprotocol negotiates authentication options?()

A.NCP
B.LCP
C.ISDN
D.DLCI
E.SLIP

9.多項(xiàng)選擇題

What can be determined from the line of show ip route output shown in the exhibit?()

A. The next routing update can be expected in 35 seconds. 
B. The IP address 10.10.10.6 is configured on S0/1. 
C. The IP address 10.10.10.8 is configured on S0/1.
D. This route is using the default administrative distance. 
E. The 10.10.10.8 network is two hops away from this router.

10.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.

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