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單項(xiàng)選擇題The following configuration line was added to router R1 Access-list 101 permit ip 10.25.30.0 0.0.0.255 any What is the effect of this access list configuration?（）

A.ermit all packets matching the first three octets of the source address to all destinations
B.permit all packet matching the last octet of the destination address and accept all source addresses
C.permit all packet matching the host bits in the source address to all destinations
D.permit all packet from the third subnet of the network address to all destinations

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1.多項(xiàng)選擇題Which statements describe the routing protocol OSPF？（）

A. It supports VLSM.
B. It is used to route between autonomous systems.
C. It confines network instability to one area of the network.
D. It increases routing overhead on the network.
E. It allows extensive control of routing updates.
F. It is simpler to configure than RIP v2.

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2.單項(xiàng)選擇題Which protocol provides a method of sharing VLAN configuration information between two Cisco switch？（）

A.VTP
B.802.1Q
C.RSTP
D.STP

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3.單項(xiàng)選擇題How will the above access lists affect traffic?（）

A.FTP traffic from 192.169.1.22 will be denied
B.No traffic, except for FTP traffic will be allowed to exit E0
C.FTP traffic from 192.169.1.9 to any host will be denied
D.All traffic exiting E0 will be denied
E.All FTP traffic to network 192.169.1.9/29 will be denied

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4.多項(xiàng)選擇題What information does a router running a link-state protocol use to build and maintain its topological database？（）

A. hello packets
B. SAP messages sent by other routers
C. LSAs from other routers
D. beacons received on point-to-point links
E. routing tables received from other link-state routers
F. TTL packets from designated routers

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5.單項(xiàng)選擇題 Refer to the exhibit.HostA cannot ping HostB.Assuming routing is properly configured，what could be thecause of this problem？（）

A.HostA is not on the same subnet as its default gateway
B.The address of SwitchA is a subnet address
C.The Fa0/0 interface on RouterA is on a subnet that cannot be used
D.The serial interfaces of the routers are not on the same subnet
E.The Fa0/0 interface on RouterB is using a broadcast address

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