A.It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.
B.It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.
C.It supports theevolution of multiple competing standards, and thus provides business opportunities for equipment manufacturers.
D.It encourages industry standardization by defining what functions occur at each layer of the model.
E.It provides a means by which changes in functionality in one layer require changes in other layers.
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A.BSS
B.ESS
C.IBSS
D.SSID
When upgrading the IOS image, the network administrator receives the exhibited error message. What could be the cause of this error（）。
A.The new IOS image is too large for the router flash memory.
B.The TFTP server is unreachable from the router.
C.The new IOS image is not correct for this router platform.
D.The IOS image on the TFTP server is corrupt.
E.There is not enough disk space on the TFTP server for the IOS image.
A.RSTP significantly reduces topology reconverging time after a link failure.
B.RSTP expends the STP port roles by adding the alternate and backup roles.
C.RSTP portatates are blocking,discarding,learing,orforwarding.
D.RSTP also uses the STP proprsal-agreement sequence.
E.RSTP use the same timer-baseed process as STP on point-to-point links.
F.RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.
A.Because of damaged flash memory, the router will fail the POST.
B.It will attempt to locate the IOS from a TFTP server. If this fails, it will initiate the setup dialog.
C.It will attempt to locate the IOS from a TFTP server. If this fails, it will load a limited IOS from ROM.
D.It will attempt to locate the configuration file from a TFTP server. If this fails, it will initiate the setup dialog.
E.It will attempt to locate the configuration file from a TFTP server. If this fails, it will load a limited configuration from ROM.
A.The denied MAC addresses have already been learned or confgured on another secure interface in the same VLAN.
B.The denied MAC address are statically configured on the port.
C.The minimum MAC threshold has been reached.
D.The absolute aging times for the denied MAC addresses have expired.
A.the summarized address for all of the internal subnetted addresses
B.the MAC address of the router used by inside hosts to connect to the Internet
C.a globally unique, private IP address assigned to a host on the inside network
D.a registered address that represents an inside host to an outside network
A.205.7.8.32/27
B.191.168.10.2/23
C.127.0.0.1
D.224.0.0.10
E.203.123.45.47/28
F.10.10.0.0/13
A.VTP allows routing between VLANs.
B.VTP allows a single port to carry information to more than one VLAN.
C.VTP allows physically redundant links while preventing switching loops.
D.VTP allows switches to share VLAN configuration information.
A.FTP
B.Telnet
C.SMTP
D.DNS
E.HTTP
F.POP3
A.NAT protects network security because privat enetworks are not advertised.
B.NAT accelerates the routing process because no modifications are made on the packets.
C.Dynamic NAT facilitates connections from the outside of the network.
D.NAT facilitates end-to-end communication when IPsec is enable.
E.NAT eliminates the need to re-address all host that require extemal access.
F.NAT conserves addresses through host MAC-level multiplexing.
最新試題
要將數(shù)據(jù)包發(fā)送到遠程網(wǎng)絡(luò)，應(yīng)使用哪種設(shè)備？（）
下列哪些是私有IP 地址的地址范圍？（）
以下哪兩種介質(zhì)可提供高達1Gb/s 的帶寬？（）
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OSI 模型的哪兩項功能在第2層實現(xiàn)？（）
請參見圖示。RouterB 已經(jīng)過正確配置。RouterA 的以太網(wǎng)接口Fa0/0已使用如圖所示的命令進行配置。但是，從RouterA 的Fa0/0接口無法成功ping 通RouterB 的Fa0/0接口。應(yīng)在RouterA 上采取什么措施來解決此問題？（）
請參見圖示。主機X 和主機Y 與本地網(wǎng)絡(luò)的通信受到限制。此問題的原因是什么？（）
請參見圖示。某用戶想要查看當(dāng)前的配置。圖中所示為ipconfig/all 命令的輸出。從此輸出可以得到哪三項結(jié)論？（）
請參見圖示。對于從主機A 向Web 服務(wù)器發(fā)出的網(wǎng)頁請求，正確的目的套接字數(shù)字是什么？（）