單項選擇題An administrator issues the command ping 127.0.0.1 from the command line prompt on a PC.If a reply is received, what does this confirm?()

A.The PC has connectivity with a local host.
B.The PC has connectivity with a Layer 3 device.
C.The PC has a default gateway correctly configured
D.The PC has connectivity up to Layer 5 of the OSI model
E.The PC has the TCP/IP protocol stack correctly installed.


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2.單項選擇題How does using the service password encryption command on a router provide additional security?()

A.by encrypting all passwords passing through the router
B.by encrypting passwords in the plain text configuration file
C.by requiring entry of encrypted passwords for access to the device
D.by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges
E.by automatically suggesting encrypted passwords for use in configuring the router

3.多項選擇題A network administrator wants to ensure that only the server can connect to port Fa0/1 on a Catalyst switch. The server is plugged into the switch Fa0/1 port and the network administrator is about to bring the server online. What can the administrator do to ensure that only the MAC address of the server is allowed by switch port Fa0/1 (Choose two.)()。

A.Configure port Fa0/1 to accept connections only from the static IP address of the server.
B.Employ a proprietary connector type on Fa0/1 that is incompatible with other host connectors.
C.Configure the MAC address of the server as a static entry associated with port Fa0/1.
D.Bind the IP address of the server to its MAC address on the switch to prevent other hosts from spoofing the server IP address.
E.Configure port security on Fa0/1 to reject traffic with a source MAC address other than that of the server.
F.Configure an access list on the switch to deny server traffic from entering any port other than Fa0/1.

4.多項選擇題Which two are features of IPv6?()

A.multicast
B.broadcast
C.allcast
D.podcast
E.anycast

5.單項選擇題在一個共享的雙絞線的網(wǎng)絡(luò)上的接口上產(chǎn)生了沖突檢測和載波偵聽.通過這個描述,關(guān)于這個網(wǎng)絡(luò)接口你知道了什么?()

A.這是一個10Mb/s的交換端口
B.這是一個100Mb/s的交換端口
C.這是一個工作在半雙工模式下的以太口
D.這是一個工作在全雙工模式下的以太口
E.這是一個PC機上網(wǎng)卡上的一個接口

最新試題

下列哪些是私有IP 地址的地址范圍?()

題型:多項選擇題

請參見圖示。主機A 正在訪問多臺服務(wù)器。結(jié)合使用什么端口號和地址即可唯一識別特定服務(wù)器上運行的特定進程?()

題型:單項選擇題

請參見圖示。公司路由器由于故障被更換。更換路由器之后,Education 辦公室內(nèi)的主機C 和D 能夠相互ping 通,但是無法訪問Accounts 辦公室內(nèi)的主機。此問題的原因可能是什么?()

題型:單項選擇題

請參見圖示。網(wǎng)絡(luò)技術(shù)人員試圖確定主機A 的正確IP 地址配置。以下哪一項是主機A 的有效配置?()

題型:單項選擇題

請參見圖示。主機B 嘗試與主機C 建立TCP/IP 會話。在嘗試期間,San Francisco 器由器的FastEthernet 接口fa0/1捕獲到一個幀。捕獲的幀中包含源IP 地址為10.10.1.2而目的IP 地址為10.31.1.20的數(shù)據(jù)包。捕獲該幀時,它的目的MAC 地址是什么?()

題型:單項選擇題

在配置路由器時,網(wǎng)絡(luò)技術(shù)人員想要命名路由器。輸入hostname 命令后,技術(shù)人員會看到下列哪一項提示?()

題型:單項選擇題

傳輸層如何讓主機能同時針對不同應(yīng)用程序維護多個通信流?()

題型:單項選擇題

請參見圖示。主機A 和B 無法互相通信。此問題的原因是什么?()

題型:單項選擇題

PC 無法連接到任何遠程網(wǎng)站,無法ping 通其默認網(wǎng)關(guān),也無法ping 通本地網(wǎng)段中工作正常的打印機。以下哪項操作可以確認此PC 上的TCP/IP 協(xié)議棧是否工作正常?()

題型:單項選擇題

以下哪兩種介質(zhì)可提供高達1Gb/s 的帶寬?()

題型:多項選擇題