In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?()A. after broken links are re-establishedB. in an improperly implemented redundant topologyC. when upper-layer protocols require high reliabili
题目
A. after broken links are re-established
B. in an improperly implemented redundant topology
C. when upper-layer protocols require high reliability
D. during high traffic periods
E. when a dual ring topology is in use
相似考题
更多“In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?() ”相关问题
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第1题：
Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN?()A.HDLC
B.Ethernet
C.Token Ring
D.PPP
E.FDDI
F.Frame Relay
参考答案：A, D, F
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第2题：
Typically, an IP address refers to an individual host on a particular network. IP also accommodates addresses that refer to a group of hosts on one or more networks. Such addresses are referred to as multicast addresses, and the act of sending a packet from a source to the members of a （1）group is referred to as multicasting. Multicasting done （2）the scope of a single LAN segment is straightforward. IEEE 802 and other LAN protocols include provision for MAC-level multicast addresses. A packet with a multicast address is transmitted on a LAN Segment. Those stations that are members of the （3）multicast group recognize the multicast address and （4）the packet. In this case, only a single copy of the packet is ever transmitted. This technique works because of the （5）nature of a LAN: A transmission from any one station is received by all other station on the LAN.
空白（5）应选（ ）。
A. Multicast
B. unicast
C. broadcast
D. multiple unicast答案：C解析：一般来说，一个IP地址对应网络上的一台主机。IP地址还能标识一组或多个网络上的主机组的地址，这种地址叫IP组播地址，把数据源发出的数据包传送给相应组播组成员的过程叫组播。组播在单一局域网段是直接传送的，使用IEEE802以及一些局域网协议如物理层协议。当包含一个组播地址的数据包在局域网段传输时，属于接收数据的组播组中的工作站能够识别这个地址并接收数据包。采用这种方式只需传送一份数据包副本，这是因为局域网是广播通信这个性质：即由一个工作站发出的数据可以被同一局域网内的所有工作站接收。 -
第3题：
Which wireless LAN statistics are reported from the Cisco Unified Wireless IP Phone 7921G via a directly connected web browser?（）
- A、duplicate sender packets
- B、unicast packet retry rate
- C、unicast packet retry ratio
- D、association rejections
正确答案:D -
第4题：
Which three are optional extensions of the Frame Relay Local Management Interface specification？（）
- A、switched virtual circuit
- B、virtual circuit status
- C、simple flow control
- D、multicasting
- E、permanent virtual circuit
正确答案:B,C,D -
第5题：
Which of the following technologies allows multiple logical subnets to span an entire physical switched network？（）
- A、 ARP
- B、 DMZ
- C、 VLAN
- D、 VPN
正确答案:C -
第6题：
In a switched LAN network, what is the Spanning-Tree algorithm used for?（）
- A、It is used to provide a mechanism for routing updates in switched environments.
- B、It is used to prevent routing loops in networks with redundant routes.
- C、It is used to prevent switching loops in networks with redundant switched routes.
- D、It is used to manage, the addition, deletion, and naming of VLANs across multiple switches.
- E、It is used to segment a network into multiple collision domains.
- F、None of the above.
- G、All of the above are functions of STP.
正确答案:C -
第7题：
Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN? （）
- A、HDLC
- B、Ethernet
- C、Token Ring
- D、PPP
- E、FDDI
- F、Frame Relay
正确答案:A,D,F -
第8题：
Multiple users call from the same location saying that they have no network connectivity. The administrator is unable to ping the main switch at that IDF. Which of the following configuration management documents would the administrator MOST likely consult to troubleshoot the issue?（）
- A、Baseline configuration
- B、Security policy
- C、Performance and transaction logs
- D、Physical network diagram
正确答案:D -
第9题：
Which phrase best describes RMAN multiplexed backup sets？（）
- A、Stripes a single backup set across multiple channels.
- B、Identical copies of backup pieces within a backup set.
- C、Multiple backup sets with multiple channels configured.
- D、Simultaneous reads from multiple files and writes into the same backup piece.
正确答案:C -
第10题：
单选题Which of the following AIX storage concepts is correct?（）AA filesystem can span multiple physical volumes.
BA physical volume can belong to more than 1 volume group.
CA logical volume can have up to 2 copies in each of 2 volume groups.
DThe size of a filesystem is always the same size as its logical volume.
正确答案： D解析： 暂无解析 -
第11题：
单选题Which of the following technologies allows multiple logical subnets to span an entire physical switched network？（）AARP
BDMZ
CVLAN
DVPN
正确答案： B解析： 暂无解析 -
第12题：
单选题What is the purpose of the spanning-tree algorithm in a switched LAN?（）ATo provide a monitoring mechanism for networks in switched environments.
BTo manage VLANs across multiple switches.
CTo prevent switching loops in networks with redundant switched paths.
DTo segment a network into multiple collision domains.
ETo prevent routing loops in networks.
正确答案： E解析： 暂无解析 -
第13题：
What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table()。A.The switch will not forward unicast frames.
B.The switch will forward the frame to a specific port.
C.The switch will return a copy of the frame out the source port.
D.The switch will remove the destination MAC from the switch table.
E.The switch will forward the frame to all ports except the port on which it was received.
参考答案：B
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第14题：
Typically，an IP address refers to an individual host on a particular network. IP also accommodates addresses that refer to a group of hosts on one or more networks.Such addresses are referred to as multicast addresses，and the act of sending a packet from a source to the members of a （71）group is referred to as multicasting. Multicasting done （72） the scope of a single LAN segment is straight forward. IEEE 802 and other LAN protocols include provision for MAC-level multicast addresses. A packet with a multicast address is transmitted on a LAN segment.Those stations that are members of the （73）multicast group recognize the multicast address and （74）the packet.In this case,only a single copy of the packet is ever transmitted.This technique works because of the （本题）nature of a LAN:A transmission from any one station is received by all other stations on the LAN.
A .multicast
B. unicast
C.broadcast
D.multiple unicast答案：C解析： -
第15题：
What is the purpose of the spanning-tree algorithm in a switched LAN?（）
- A、To provide a monitoring mechanism for networks in switched environments.
- B、To manage VLANs across multiple switches.
- C、To prevent switching loops in networks with redundant switched paths.
- D、To segment a network into multiple collision domains.
- E、To prevent routing loops in networks.
正确答案:C -
第16题：
Which of the following BEST describes server virtualization？（）
- A、 A single logical server operating on multiple physical servers.
- B、 Applications hosted on a single server and deployed to multiple users.
- C、 Multiple servers used to host applications for multiple users.
- D、 Multiple logical servers operating on the same physical server.
正确答案:D -
第17题：
What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table?（）
- A、The switch will not forward unicast frames.
- B、The switch will forward the frame to a specific port.
- C、The switch will return a copy of the frame out the source port.
- D、The switch will remove the destination MAC from the switch table.
- E、The switch will forward the frame to all ports except the port on which it was received.
正确答案:B -
第18题：
pany uses MSTP within their switched LAN. What is the main purpose of Multiple Instance Spanning Tree Protocol （MSTP）？（）
- A、 To enhance Spanning Tree troubleshooting on multilayer switches
- B、 To reduce the total number of spanning tree instances necessary for a particular topology
- C、 To provide faster convergence when topology changes occur in a switched network
- D、 To provide protection for STP when a link is unidirectional and BPDUs are being sent but not received
- E、 None of the other alternatives apply
正确答案:B -
第19题：
In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switchedLAN？（）
- A、after broken links are re-established
- B、in an improperly implemented redundant topology
- C、when upper-layer protocols require high reliability
- D、during high traffic periods
- E、when a dual ring topology is in use
正确答案:E -
第20题：
Which of the following AIX storage concepts is correct?（）
- A、A filesystem can span multiple physical volumes.
- B、A physical volume can belong to more than 1 volume group.
- C、A logical volume can have up to 2 copies in each of 2 volume groups.
- D、The size of a filesystem is always the same size as its logical volume.
正确答案:A -
第21题：
单选题Which phrase best describes RMAN multiplexed backup sets？（）AStripes a single backup set across multiple channels.
BIdentical copies of backup pieces within a backup set.
CMultiple backup sets with multiple channels configured.
DSimultaneous reads from multiple files and writes into the same backup piece.
正确答案： A解析： 暂无解析 -
第22题：
单选题What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table（）。AThe switch will not forward unicast frames.
BThe switch will forward the frame to a specific port.
CThe switch will return a copy of the frame out the source port.
DThe switch will remove the destination MAC from the switch table.
EThe switch will forward the frame to all ports except the port on which it was received.
正确答案： E解析： 暂无解析 -
第23题：
单选题In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?（）Aafter broken links are re-established
Bin an improperly implemented redundant topology
Cwhen upper-layer protocols require high reliability
Dduring high traffic periods
Ewhen a dual ring topology is in use
正确答案： A解析： 暂无解析