多选题Which of the following statements are true for routers but not true for Layer 3 Ethernet switches?(Choose all that apply.)()AMay have Ethernet as well as non-Ethernet interfacesBTraditionally used as a standalone device for inter-VLAN communicationCMak

题目
多选题
Which of the following statements are true for routers but not true for Layer 3 Ethernet switches?(Choose all that apply.)()
A

May have Ethernet as well as non-Ethernet interfaces

B

Traditionally used as a standalone device for inter-VLAN communication

C

Makes use of TCAMs

D

Uses subinterfaces to define trunks

E

Can use both Layer 2 and Layer 3 to make forwarding decisions

F

Allows the definition of Switched Virtual Interfaces(SVI)

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第1题:

With regard to Ethernet media access methods, which of the following are true?

(Choose all that apply.)

A.A device waits for an electronic signal before transmitting.

B.A device listens and waits until the media is not busy before transmitting.

C.All devices on an Ethernet segment see data that passes on the network medium.

D.Only the sender and the receiver devices see data that passes on the network medium.

E.Ethernet networks allow you to configured devises with higher transmission priority.


正确答案:BC
解析:Explanation:
Ethernet uses the CSMA/CD access method.
CSMA/CD logic helps prevent collisions and also defines how to act when a collision does occur. The CSMA/CD algorithm words like this:
1. A device with a frame. to send listens until the Ethernet is not busy.
2. When the Ethernet is not busy, the sender begins sending the frame.
3. The sender listens to make sure that no collision occurred.
4. Once the senders hear the collision, they each send a jamming signal, to ensure that all stations recognize the collision.
5. After the jamming is complete, each sender randomizes a timer and waits that long.
6 When each timer expires, the process starts over with Step 1.
So, all devices on the Ethernet need to use CSMA/CD to avoid collisions and to recover when inadvertent collisions occur.

第2题:

Which of the following statements are true regarding bridges and switches (Choose 3.)()。

A.Switches are primarily software based while bridges are hardware based.

B.Both bridges and switches forward Layer 2 broadcasts.

C.Bridges are frequently faster than switches.

D.Switches have a higher number of ports than most bridges.

E.Bridges define broadcast domains while switches define collision domains.

F.Both bridges and switches make forwarding decisions based on Layer 2 addresses.


参考答案:B, D, F

第3题:

When comparing and contrasting the similarities and differences between bridges and switches, which of the following are valid statements? Choose all the valid answer choices)

A. Bridges are faster than switches because they have fewer ports.

B. A switch is a multiport bridge,

C. Bridges and switches learn MAC addresses by examining the source MAC address of each frame. received.

D. A bridge will forward a broadcast but a switch will not.

E. Bridges and switches increase the size of a collision domain.

F. None of the above statements are true.


正确答案:BC
B,C 解析:Explanation:
Both bridges and switches build the bridge table by listening to incoming frames and examining the source MAC address in the frame.

Switches are multiport bridges that allow you to create multiple broadcast domains. Each broadcast domain is like a distinct virtual bridge within a switch.

Incorrect Answers:
A. Switches are generally faster than bridges. Bridges also do not necessarily have fewer ports than switches.

D. Both bridges and switches will forward broadcast and multicast traffic, assuming that the traffic remains in the same VLAN.

E. The use of VLANs in a switch can decrease the size of the collision domain, by creating additional, smaller collision domains.

第4题:

Which statement is true regarding an Ethernet collision domain?()

  • A、If a router is used, the collision domain includes all devices connected to the router.
  • B、If a hub is used, the collision domain is limited to each device and the hub.
  • C、If a switch is used, the collision domain is limited to each device and the switch.
  • D、If a bridge is used, the collision domain includes all devices connected to the bridge.

正确答案:C

第5题:

Which three statements about NetFlow are true? ()

  • A、LCP is used for PPP over ATM (PPPoA) setup.
  • B、LCP is used for PPP over Ethernet (PPPoE) setup.
  • C、LCP is used for PPP over Ethernet (PPPoPR) setup.
  • D、LCP is used for PPP CHAP authentication.
  • E、LCP is used for basic PPP link setup and operation.

正确答案:A,B,E

第6题:

With regard to bridges and switches, which of the following statements are true?()

A. Switches are primarily software based while bridges are hardware based.

B. Both bridges and switches forward Layer 2 broadcasts.

C. Bridges are frequently faster than switches.

D. Switches typically have a higher number of ports than bridges.

E. Bridges define broadcast domain while switches define collision domains.

F. Both bridges and switches make forwarding decisions based on Layer 2 addresses.


参考答案:B, E, F

第7题:

Which of the following statements are true for routers but not true for Layer 3 Ethernet switches?(Choose all that apply.)()

  • A、May have Ethernet as well as non-Ethernet interfaces
  • B、Traditionally used as a standalone device for inter-VLAN communication
  • C、Makes use of TCAMs
  • D、Uses subinterfaces to define trunks
  • E、Can use both Layer 2 and Layer 3 to make forwarding decisions
  • F、Allows the definition of Switched Virtual Interfaces(SVI)

正确答案:A,B,D

第8题:

Both bridges are switches are being used throughout the Ezonexam LAN. Which of the following statements are true regarding bridges and switches in this network?

(Choose 3)

A. Switches are primarily software based while bridges are hardware based.

B. Switches usually have a higher number of ports than most bridges.

C. Bridges are frequently faster than switches.

D. Bridges define broadcast domains while switches define collision domains.

E. Both bridges and switches forward Layer 2 broadcasts.

F. Both bridges and switches make forwarding decisions based on Layer 2 addresses.


正确答案:BEF
B,E,F

第9题:

Which of the following characteristics are true assuming you are troubleshooting a networkcurrently enabled for VRRP?(Choose all that apply.)()

  • A、The network is load balancing among different members of the VRRP group
  • B、The default hello timers are 1 second
  • C、The interface IP address is being used as the virtual IP address
  • D、There are several routers in the group simultaneously forwarding traffic for the group
  • E、It is a Cisco Proprietary protocol
  • F、The default hello timers are 3 seconds

正确答案:B,C

第10题:

Which two statements are true regarding an Ethernet collision domain?()

  • A、If a switch is used, the collision domain is limited to each device and the switch
  • B、If a hub is used, the collision domain is limited to each device and the hub
  • C、If a hub is used, the collision domain includes all devices connected to the hub
  • D、If a switch is used, the collision domain includes all devices connected to the switch

正确答案:A,C

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