多項選擇題A network administrator wants to ensure that only the server can connect to port Fa0/1 on a Catalyst switch. The server is plugged into the switch Fa0/1 port and the network administrator is about to bring the server online. What can the administrator do to ensure that only the MAC address of the server is allowed by switch port Fa0/1?（）

A.Configure port Fa0/1 to accept connections only from the static IP address of the server.
B.Employ a proprietary connector type on Fa0/1 that is incompatible with other host connectors.
C.Configure the MAC address of the server as a static entry associated with port Fa0/1.
D.Bind the IP address of the server to its MAC address on the switch to prevent other hosts from spoofing the server IP address.
E.Configure port security on Fa0/1 to reject traffic with a source MAC address other than that of the server.
F.Configure an access list on the switch to deny server traffic from entering any port other than Fa0/1.


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1.多項選擇題At which layers of the OSI model do WANs operate? (Choose two.)（）

A.application layer
B.session layer
C.transport layer
D.network layer
E.datalink layer
F.physical layer

2.多項選擇題Which three statements describe the differences between RIP version 1 and RIP version 2? (Choose three.)（）

A.RIP version 1 broadcasts updates whereas RIP version 2 uses multicasts.
B.RIP version 1 multicasts updates while RIP version 2 uses broadcasts.
C.Both RIP version 1 and RIP version 2 are classless routing protocols.
D.RIP Version 2 is a classless routing protocol whereas RIP version 1 is a classful routing protocol.
E.Both RIP version 1 and version 2 support authentication.
F.RIP version 2 sends the subnet mask in updates and RIP version 1 does not.

3.單項選擇題When a new trunk is configured on a 2950 switch, which VLANs by default are allowed over the trunk link?（）

A.no VLANs
B.all VLANs
C.only VLANs 1 - 64
D.only the VLANs that are specified when creating the trunk

4.單項選擇題What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch?（）

A.It creates a VLAN 999 interface.
B.It designates VLAN 999 for untagged traffic.
C.It blocks VLAN 999 traffic from passing on the trunk.
D.It designates VLAN 999 as the default for all unknown tagged traffic.

5.單項選擇題A Cisco router is booting and has just completed the POST process. It is now ready to find and load an IOS  image. What function does the router perform next?（）

A.It checks the configuration register.
B.It attempts to boot from a TFTP server.
C.It loads the first image file in flash memory.
D.It inspects the configuration file in NVRAM for boot instructions.

6.多項選擇題What functions do routers perform in a network? (Choose two.)（）

A.packet switching
B.access layer security
C.path selection
D.VLAN membership assignment
E.bridging between LAN segments
F.microsegmentation of broadcast domains

7.單項選擇題At which OSI layer is a logical path created between two host systems?（）

A.session
B.transport
C.network
D.data link
E.physical

8.多項選擇題What three pieces of information can be used in an extended access list to filter traffic? (Choose three.)（）

A.protocol
B.VLAN number
C.TCP or UDP port numbers
D.source switch port number
E.source IP address and destination IP address
F.source MAC address and destination MAC address

10.單項選擇題During startup, the router displays the following error message: boot: cannot open "flash:" What will the router do next?（）

A.Because of damaged flash memory， the router will fail the POST
B.It will attempt to locate the IOS from a TFTP server. If this fails， it will initiate the setup dialog.
C.It will attempt to locate the IOS from a TFTP server. If this fails， it will load a limited IOS from ROM
D.It will attempt to locate the configuration file from a TFTP server. If this fails， it will initiate the setup dialog.
E.It will attempt to locate the configuration file from a TFTP server. If this fails， it will load a limited configuration from ROM