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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
参考答案
更多 “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” 相关考题
考题
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
考题
Which two routing protocols require a metric to be configured when redistributing routes from other protocols?()
A. RIPB. BGPC. IS - ISD. OSPFE. EIGRP
考题
What two situations could require the use of multiple routing protocols? ()
A. when all equipment is manufactured by CiscoB. when there are multiple paths to destination networksC. because having multiple routing protocols confuses hackersD. when migrating from an older Interior Gateway Protocol (IGP) to a new IGPE. when using UNIX host - based routersF. when smaller broadcast domains are desired
考题
What two choices can you make when redundancy is required from a branch office to a regional office?()
A. multiple Frame Relay PVCsB. dualWan links to the regional officeC. dualWan links to another branch officeD. single links - one to the regional office and one to another branch office
考题
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
考题
In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN()。
A.during high traffic periodsB.after broken links are re-establishedC.when upper-layer protocols require high reliabilityD.in an improperly implemented redundant topologyE.when a dual ring topology is in use
考题
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
考题
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
考题
For each blank，choose the best answer from the four choices and write down on the answer sheet.
（ ）is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.
（请作答此空）is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.
（ ）functions with two layers of protocols.It Can connect networks of different speeds and can be adapted to an environment as it expands.
（ ）is the popular LAN developed under the direction of the IEEE 802.5.
（ ）is the popular backbone technology for transmitting information at high speed with a high level of fault tolerance which is developed under the direction of ANSI.A.ISO
B.ANSI
C.CCITT
D.IEEE
考题
When should traffic shaping be implemented on Frame Relay PVCs？（）A、When you want to drop excess traffic above the CIRB、When there is a speed mismatch between the central site and the remote siteC、When using Frame Relay SVCsD、When over-subscribing the central site linkE、When LLQ is implemented on the Frame Relay PVCF、When Multilink PPP LFI is implemented on the Frame Relay PVC
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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.
考题
In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN（）。A、during high traffic periodsB、after broken links are re-establishedC、when upper-layer protocols require high reliabilityD、in an improperly implemented redundant topologyE、when a dual ring topology is in use
考题
What two situations could require the use of multiple routing protocols? （）A、when all equipment is manufactured by CiscoB、when there are multiple paths to destination networksC、because having multiple routing protocols confuses hackersD、when migrating from an older Interior Gateway Protocol (IGP) to a new IGPE、when using UNIX host - based routersF、when smaller broadcast domains are desired
考题
What two choices can you make when redundancy is required from a branch office to a regional office?（）A、multiple Frame Relay PVCsB、dualWan links to the regional officeC、dualWan links to another branch officeD、single links - one to the regional office and one to another branch office
考题
Which of the following networks would MOST likely require EGP routing?（）A、Networks that use OSPF in addition to static routesB、Networks with classless Internet domain routingC、Networks with multiple ISPsD、Networks that use encryption
考题
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.
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Which two statements are correct regarding Flex Links？ （）A、 An interface can belong to multiple Flex Links.B、 Flex Links operate only over single pairs of links.C、 Flex Link pairs must be of the same interface typeD、 Flex Links automatically disable STP so no BPDUs are propagatedE、 Failover from active to standby on Flex Links takes less than a second
考题
Which two routing protocols require a metric to be configured when redistributing routes from other protocols?（）A、RIPB、BGPC、IS - ISD、OSPFE、EIGRP
考题
What two choices can you make when redundancy is required from a branch office to a regional office？ （）A、 multiple Frame Relay PVCsB、 dual Wan links to the regional officeC、 dual Wan links to another branch officeD、 single links - one to the regional office and one to another branch office
考题
In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switchedLAN？（）A、after broken links are re-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
考题
Which of the following is the purpose of QoS?（）A、Load balance traffic across multiple LAN and WAN links.B、Increase speed of network traffic.C、Classify, mark, and prioritize traffic on WAN and LAN linksD、Guarantee traffic delivery.
考题
When planning for redundant power sources in a server deployment， which of the following should be purchased？（）A、RAID controllersB、Multiple UPSsC、Redundant coolingD、Dual NICsE、Redundant power supplies
考题
What is the role of route preference?（）A、It is used as a tiebreaker when the same prefix is available through multiple protocols.B、It is used to determine the preferred path to a given destination.C、It is used to select the best route between multiple equal-cost paths.D、It is used to select which routing table to use for forwarding.
考题
单选题In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switchedLAN？（）A
after broken links are re-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
考题
单选题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
考题
单选题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.
考题
单选题What is the role of route preference?（）A
It is used as a tiebreaker when the same prefix is available through multiple protocols.B
It is used to determine the preferred path to a given destination.C
It is used to select the best route between multiple equal-cost paths.D
It is used to select which routing table to use for forwarding.
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