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Which two protocols are used by bridges and/or switches to p

题目
多选题
Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network?（）
A

802.1d

B

VTP

C

802.1q

D

STP

E

SAP

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相似问题和答案

第1题：

The Ezonexam network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test? (Choose two)

A．ARP

B．CDP

C．DHCP

D．DNS

E．ICMP


正确答案：AE
解析：Explanation:ARPfindsthehardwareaddressofahostfromaknownIPaddress.Here'showitworks:whenIPhasadatagramtosend,itmustinform.aNetworkAccessprotocol,suchasEthernetorTokenRing,ofthedestination'shardwareaddressonthelocalnetwork.(Ithasalreadybeeninformedbyupper-layerprotocolsofthedestination'sIPaddress.)IfIPdoesn'tfindthedestinationhost'shardwareaddressintheARPcache,itusesARPtofindthisinformation.ICMPworksattheNetworklayerandisusedbyIPformanydifferentservices.ICMPisamanagementprotocolandmessagingserviceproviderforIP.ItsmessagesarecarriedasIPdatagrams.RFC1256isanannextoICMP,whichaffordshosts'extendedcapabilityindiscoveringroutestogateways.Periodically,routeradvertisementsareannouncedoverthenetwork,reportingIPaddressesfortherouter'snetworkinterfaces.Hostslistenforthesenetworkinfomercialstoacquirerouteinformation.Aroutersolicitationisarequestforimmediateadvertisementsandmaybesentbyahostwhenitstartsup.

第2题：

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


参考答案：B, D

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：

Bridges and switches are Layer 2 devices that provide the same basic functionality but that also have some differences. Which two traits apply to switches only？（）

  • A、 supports Layer 2 VLANs
  • B、 segment LANs
  • C、 are faster because forwarding decisions are made on hardware
  • D、 typically have fewer ports because forwarding decisions are made in software
  • E、 flood frames out all ports

正确答案:A,C

第5题：

Which two statements are true about the protocols that are used for transmitting voice traffic？（）

  • A、RTP multiplexing is used to keep multiple phone conversations separate
  • B、RTP provides end-to-end delivery services for voice traffic
  • C、UDP is used to ensure a reliable transmission from sender to receiver
  • D、RTP is used to provide resource reservation for the voice stream
  • E、UDP provides multiplexing

正确答案:E

第6题：

In a base e－Commerce module design, which routing statement is correct?()

A. Routing is mostly static.

B. Hardcoded IP addresses are used to support failover.

C. Inbound servers use the CSM or ACE as the default gateway.

D. VLANs between the access layer switches are used for FHRP protocols.


参考答案：A

第7题：

Which of the following are true regarding bridges and switches?（）

  • 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.

正确答案:B,C

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 two protocols are used by bridges and/or switches to prevent loops in a layer 2 network?（）

  • A、802.1d
  • B、VTP
  • C、802.1q
  • D、STP
  • E、SAP

正确答案:A,D

第10题：

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

正确答案:B,D

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