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 reliabilityD. during high traffic periodsE. when a dual ring topology is in use
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-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
相关考题：
You need to decide on which trunking method to implement in the Ezonexam network. What is a characteristic of ISL and 802.1q frame. tagging in a switched LAN environment?A．They are used to find the best path through a network.B．They allow the exchange of filtering tables.C．They specify different implementations of the Spanning-Tree Protocol.D．They allow the exchange of routing tablesE．They provide inter-switch VLAN communication.
A Ezonexam Ethernet switch receives a unicast frame. with a destination MAC that is listed in the switch table. What will this switch do with the frame?A. The switch will forward the frame. to a specific portB. The switch will forward the frame. to all ports except the port on which it was receivedC. The switch will return a copy of the frame. out the source portD. The switch will not forward unicast framesE. The switch will remove the destination MAC from the switch tableF. None of the above.
In which circumstance are multiple copies of the same unicast frame. likely to be transmitted in the Ezonexam Switched LAN?A. During high traffic periodsB. In an improperly implemented redundant topologyC. After broken links are re-establishedD. When upper-layer protocols require high reliabilityE. When a dual ring topology is in useF. None of the above
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.A.numerousB.onlyC.singleD.multicast@@@SXB@@@A.withinB.out ofC.beyondD.cover@@@SXB@@@A.differentB.uniqueC.specialD.corresponding@@@SXB@@@A.rejectB.acceptC.discardD.transmit@@@SXB@@@A.multicastB.unicastC.broadcastD.multiple unicast
Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN?() A.HDLCB.EthernetC.Token RingD.PPPE.FDDIF.Frame Relay
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.
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. broadcastD. multiple unicast
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 .multicastB. unicastC.broadcastD.multiple unicast
Which wireless LAN statistics are reported from the Cisco Unified Wireless IP Phone 7921G via a directly connected web browser?（）A、duplicate sender packetsB、unicast packet retry rateC、unicast packet retry ratioD、association rejections
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.
Which three are optional extensions of the Frame Relay Local Management Interface specification？（）A、switched virtual circuitB、virtual circuit statusC、simple flow controlD、multicastingE、permanent virtual circuit
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.
Which of the following technologies allows multiple logical subnets to span an entire physical switched network？（）A、 ARPB、 DMZC、 VLAND、 VPN
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.
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.
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 switchesB、 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 networkD、 To provide protection for STP when a link is unidirectional and BPDUs are being sent but not receivedE、 None of the other alternatives apply
Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN? （）A、HDLCB、EthernetC、Token RingD、PPPE、FDDIF、Frame Relay
In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switchedLAN？（）A、after broken links are re-establishedB、in an improperly implemented redundant topologyC、when upper-layer protocols require high reliabilityD、during high traffic periodsE、when a dual ring topology is in use
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 configurationB、Security policyC、Performance and transaction logsD、Physical network diagram
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.
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.
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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.
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.
单选题Which of the following technologies allows multiple logical subnets to span an entire physical switched network？（）A ARPB DMZC VLAND VPN
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-establishedBin an improperly implemented redundant topologyCwhen upper-layer protocols require high reliabilityDduring high traffic periodsEwhen a dual ring topology is in use
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.