單項(xiàng)選擇題Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?（）

A.BackboneFast
B.UplinkFast
C.Root Guard
D.BPDU Guard
E.BPDU Filter


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1.單項(xiàng)選擇題Host 1 receives a file from remote server 1. Which MAC address appears as the source address in the header of the frames received by Host 1（）。

A.The MAC address of the NIC in Host 1
B.The MAC address of the NIC in server 1
C.The MAC address of the Fa0/0 interface of router R1
D.The MAC address of the s0/0/0 interface of the router R2

2.多項(xiàng)選擇題By default, each port in a Cisco Catalyst switch is assigned to VLAN1. Which two recommendations are key to avoid unauthorized management access? （）

A.Create an additional ACL to block the access to VLAN 1.
B.Move the management VLAN to something other than default.
C.Move all ports to another VLAN and deactivate the default VLAN.
D.Limit the access in the switch using port security configuration.
E.Use static VLAN in trunks and access ports to restrict connections.
F.Shutdown all unused ports in the Catalyst switch.

3.多項(xiàng)選擇題

Your boss is learning a CCNA training course，refer to the exhibit.The access list has been configured on the S0/0 interface of router RTB in the outbound direction.Which two packets，if routed to the interface，will be denied？（）
access-list 101 denytcp192.168.15.320.0.0.15any eq telnet
access-list 101 permitip any any

A.source ip address:192.168.15.5;destination port: 21
B.source ip address:,192.168.15.37 destination port: 21
C.source ip address:,192.168.15.41 destination port: 21
D.source ip address:,192.168.15.36 destination port: 23
E.source ip address:192.168.15.46;destination port: 23
F.source ip address:,192.168.15.49 destination port: 23

4.多項(xiàng)選擇題Host 1 has just started up and requests a web page from web server 2. Which two statements describe steps in the process Host 1 uses to send the request to web server 2 (choose two)（）。

A.Host 1 addresses the frames to the MAC address of router R1
B.Host 1 looks in its ARP cache for the MAC address of router R1
C.Host 1 addresses the frames to the MAC address of web server 2
D.Host 1 sends the packets to router R1 to be forwarded to web server 2
E.Host 1 sends a broadcast ARP request to obtain the MAC address of webserver2

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