思科认证640-802模拟试卷6

When a switch port is used as a VLAN trunk, which of the following trunk modes are valid? (Select all that apply.)

A. Blocking

B. Auto

C. Desirable

D. On

E. Transparent

F. Learning

You have a class B network with a 255.255.255.0 mask. Which of the statements below are true of this network? (Select all valid answers)

A. There are 254 usable subnets.

B. There are 256 usable hosts per subnet.

C. There are 50 usable subnets.

D. There are 254 usable hosts per subnet.

E. There are 24 usable hosts per subnet.

F. There is one usable network.

Which of the following correctly describe the various functions and virtues of a router? (Select all valid answer choices)

A. Packet switching

B. Collision prevention on a LAN segment.

C. Packet filtering

D. Broadcast domain enlargement

E. Broadcast forwarding

F. Internetwork communication

G. None of the above

Which encapsulation types are configurable on a Cisco switch for a trunk? (Select two answer choices)

A. VTP

B. ISL

C. CDP

D. 802.1Q

E. 802.1p

F. LLC

G. IETF

A new switch is installed in the Ezonexam network. This switch is to be configured so that VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network.

Which of the conditions below have to be met in order for this to occur? (Choose all that apply).

A. The switch that will share the VLAN information must be in the VTP Server mode.

B. The switches must be in the same VTP domain.

C. The switch that will share the VLAN information must be configured as the root bridge.

D. The switches must be configured to use the same VTP version.

E. The switches must be configured to use the same STP version.

F. The switches must be configured to use the same type of ID tagging.

G. The switches must be connected over VLAN trunks.

Ezonexam has implemented the use of VLANs in their network. Which of the following are considered to be a benefit of VLANs? (Choose three)

A. They increase the size of collision domains.

B. They allow logical grouping of users by function.

C. They can enhance network security,

D. The increase the size of broadcast domains while decreasing the number of the broadcast domains.

E. The increase the number of broadcast domains while decreasing the size of the broadcast domains.

F. They simplify switch administration.

An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location? (Choose two)

A. The switch must be reachable through a port connected to its management VLAN.

B. The switch console port must be connected to the Ethernet LAN.

C. The switch must be fully configured as an SNMP agent.

D. The switch must be configured with an IP address, subnet mask, and default gateway.

E. The switch management VLAN must be created and have a membership of at least one switch port.

F. The switch must be connected to a router over a VLAN trunk.

You are unable to telnet to a router at address 203.125.12.1 from a workstation with the IP address 203.125.12.23. You suspect that there is a problem with the IP protocol stack in your PC. Which of the following actions is most likely to confirm your diagnosis?

A. ping 127.0.0.0

B. ping 203.125.12.1

C. telnet 127.0.0.1

D. ping 127.0.0.1

E. tracert 203.125.12.1

F. None of the above

How could the Ezonexam corporation benefit from using VLANs on their network?

(Select three answer choices.)

A. VLANs allow access to network services based on department, not physical location.

B. VLANs utilize packet filtering to enhance network security.

C. VLANs provide a low-latency, high bandwidth internetworking alternative.

D. VLANs provide a method of communication between IP addresses in large networks.

E. VLANs establish segmented broadcast domains in switched networks.

F. VLANs can greatly simplify adding, moving, or changing hosts on the network.

Which Layer 4 protocol is used for a Telnet connection between two Ezonexam routers?

A. IP

B. ICMP

C. DNS

D. TCP

E. UDP

F. RTP

You are trying to connect directly into the LAN prot of a Ezonexam router. You want to telnet to the local Cisco router using TCP/IP but cannot create a session.

What should you do to resolve the problem?

A. Use a straight-through cable to connect your computer's COM port to the router's console port.

B. Use a crossover cable to connect your computer's COM port to the router's console port.

C. Use a straight-through cable to connect your computer's COM port to the router's Ethernet port.

D. Use a crossover cable to connect your computer's Ethernet port to the router's Ethernet port.

E. Use a rollover cable to connect your computer's Ethernet port to the router's Ethernet port.

F. Use a straight-through cable to connect your computer's Ethernet port to the router's Ethernet port.

G. None of the above

You need to configure two Ezonexam switches to exchange VLAN information. Which protocol provides a method of sharing VLAN configuration information between these two switches?

A. STP

B. 802.1Q

C. VLSM

D. ISL

E. VTP

F. HSRP

G. None of the above

Which OSI layer is associated with the following: The acknowledgement of transmissions, sequencing, and flow control across a network?

A. Layer 2

B. Layer 3

C. Layer 4

D. Layer 5

E. Layer 6

F. Layer 7

After working on a router, some problems arise and you wish to view the commands that you recently entered. Which IOS command opens the history buffer and displays the most recently entered commands?

A. Show history

B. Show buffers

C. Show typed commands

D. Show terminal buffer

E. Show command

F. None of the above

A network administrator wants to control which user hosts can access the network based on their MAC address. What will prevent workstations with unauthorized MAC addresses from connecting to the network through a switch?

A. BPDU

B. Port security

C. RSTP

D. STP

E. VTP

F. Blocking mode

While troubleshooting an issue in the Ezonexam LAN you notice that a network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?

A. This is an Ethernet port operating at half duplex

B. This is an Ethernet port operating at full duplex

C. This is a port on a network interface card in a PC

D. This is 10 MB/s switch port

E. This is a 100 MB/s switch port

F. None of the above

Why would the Ezonexam administrator change the value of the spanning-tree priority of a switch?

A. in order to optimize the path that frames take from source to destination

B. to increase the priority so a designated port will become a root port

C. to increase the BID, so the switch is more likely to become root bridge

D. in order to allow VLANs to be sent from one switch to another across a single link

E. to force a given switch to become an STP server

F. None of the above

Why might the Ezonexam network administrator set the configuration register to 0x2142 on a 2600 series Cisco router?