單項(xiàng)選擇題What is valid reason for a switch to deny port access to new devices when port security is enabled?（）

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.


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1.單項(xiàng)選擇題What does the "Inside Global" address represent in the configuration of NAT（）。

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

2.多項(xiàng)選擇題Which of the following IP addresses can be assigned to the host devices? （）

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

3.單項(xiàng)選擇題Which statement accurately describes a benefit provided by VTP（）。

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.

5.多項(xiàng)選擇題What are two benefits of using NAT?（）

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

請(qǐng)參見圖示。一臺(tái)主機(jī)正使用NAT 連接到Internet。下列哪三項(xiàng)IP 地址可實(shí)現(xiàn)此連接？（）

題型：多項(xiàng)選擇題

請(qǐng)參見圖示。主機(jī)A 和B 無法互相通信。此問題的原因是什么？（）

題型：單項(xiàng)選擇題

下列哪些是私有IP 地址的地址范圍？（）

題型：多項(xiàng)選擇題

OSI 模型的哪兩項(xiàng)功能在第2層實(shí)現(xiàn)？（）

題型：多項(xiàng)選擇題

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

題型：單項(xiàng)選擇題

路由器使用哪一項(xiàng)信息來確定源主機(jī)和目的主機(jī)之間的路徑？（）

題型：單項(xiàng)選擇題

請(qǐng)參見圖示。主機(jī)A 嘗試與主機(jī)C 建立TCP/IP 會(huì)話。在嘗試期間，路由器Y 的FastEthernet 接口fa0/1捕獲到一個(gè)幀。捕獲的幀中包含源IP 地址為172.16.1.5而目的IP 地址為172.16.7.24的數(shù)據(jù)包。捕獲該幀時(shí)，它的源MAC 地址是什么？（）

題型：單項(xiàng)選擇題

請(qǐng)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(jìn)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？（）

題型：單項(xiàng)選擇題

請(qǐng)參見圖示。主機(jī)A 正在訪問多臺(tái)服務(wù)器。結(jié)合使用什么端口號(hào)和地址即可唯一識(shí)別特定服務(wù)器上運(yùn)行的特定進(jìn)程？（）

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請(qǐng)參見圖示。網(wǎng)絡(luò)技術(shù)人員使用圖中所示的連接將主機(jī)A 連接到路由器以創(chuàng)建初始配置。下列有關(guān)此連接的陳述中哪一項(xiàng)正確？（）

題型：單項(xiàng)選擇題