多項(xiàng)選擇題At which layers of the OSI model do WANs operate?()

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


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2.多項(xiàng)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.

3.多項(xiàng)選擇題What functions do routers perform in a network?()

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

4.多項(xiàng)選擇題Which of the following describe the process identifier that is used to run OSPF on a router?()

A. It is locally significant.
B. It is globally significant.
C. It is needed to identify a unique instance of an OSPF database.
D. It is an optional parameter required only if multiple OSPF processes are running on the router.
E. All routers in the same OSPF area must have the same process ID if they are to exchange routing information.

5.多項(xiàng)選擇題To configure the VLAN trunking protocol to communicate VLAN information between two switches, what two requirements must be met?()

A. Each end of the trunk line must be set to IEEE 802.1E encapsulation.
B. The VTP management domain name of both switches must be set the same.
C. All ports on both the switches must be set as access ports.
D. One of the two switches must be configured as a VTP server.
E. A rollover cable is required to connect the two switches together.
F. A router must be used to forward VTP traffic between VLANs.

6.多項(xiàng)選擇題Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true?()

A. Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.
B. Router C will use ICMP to inform Router B that Host 2 cannot be reached.
C. Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.
D. Router C will send a Destination Unreachable message type.
E. Router C will send a Router Selection message type.
F. Router C will send a Source Quench message type.

7.多項(xiàng)選擇題When a DHCP server is configured, which two IP addresses should never be assignable to hosts?()

A. network or subnetwork IP address
B. broadcast address on the network
C. IP address leased to the LAN
D. IP address used by the interfaces
E. manually assigned address to the clients
F. designated IP address to the DHCP server

8.多項(xiàng)選擇題Which two statements about the use of VLANs to segment a network are true?()

A. VLANs increase the size of collision domains.
B. VLANs allow logical grouping of users by function.
C. VLANs simplify switch administration.
D. VLANs enhance network security.

10.多項(xiàng)選擇題Which two link protocols are used to carry multiple VLANs over a single link?()

A.VTP
B.802.1q
C.IGP
D.ISL
E.802.3u

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