單項(xiàng)選擇題DNS servers provide what service?()

A.They run a spell check on host names to ensure accurate routing
B.They convert domain names into IP address
C.Given an IP address,they determine the name of the host that is sought
D.They map individual hosts to their specific IP addresses


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題What is the function of the command switchport trunk native vlan 999 on a switch?()

A.It designates VLAN 999 for untagged traffic.
B.It blocks VLAN 999 traffic from passing on the trunk.
C.It creates a VLAN 999 interface.
D.It designates VLAN 999 as the default for all unkown tagged traffic.

2.單項(xiàng)選擇題什么存儲(chǔ)第2層交換機(jī)使用,以決定在哪里轉(zhuǎn)發(fā)接收到的幀?()

A.源MAC地址
B.源IP地址
C.源交換機(jī)端口
D.目的地IP地址
E.目標(biāo)端口地址
F.目的MAC地址

3.單項(xiàng)選擇題The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?()

A.10.10.0.0/18 subnetted with mask 255.255.255.252
B.10.10.0.0/25 subnetted with mask 255.255.255.252
C.10.10.0.0/24 subnetted with mask 255.255.255.252
D.10.10.0.0/23 subnetted with mask 255.255.255.252
E.10.10.0.0/16 subnetted with mask 255.255.255.252

4.單項(xiàng)選擇題在OSI模型的哪層運(yùn)用RSTP用來(lái)防止循環(huán)?()

A.數(shù)據(jù)鏈路
B.網(wǎng)絡(luò)
C.物理
D.傳輸

5.多項(xiàng)選擇題Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch?()

A.SW1#show swithport port-security interface FastEthernet 0/12
B.SW1# show swithport port-secure interface FastEthernet 0/12
C.SW1# show port-secure interface FastEthernet 0/12
D.SW1#show running-config
E.SW1#show port-security interface FastEthernet 0/12

6.單項(xiàng)選擇題選舉根端口主要確定哪個(gè)值?()

A.最低端口MAC地址
B.端口的優(yōu)先級(jí)號(hào)和MAC地址
C.VTP修訂號(hào)
D.最高的端口優(yōu)先級(jí)數(shù)量
E.路徑開(kāi)銷(cost)

7.多項(xiàng)選擇題下面關(guān)于RSTP哪三種說(shuō)法是正確的?()

A.RSTP鏈路故障后顯著減少拓?fù)渚酆蠒r(shí)間
B.RSTP通過(guò)增加備用和備份角色的消費(fèi)STP端口角色
C.RSTP端口atates被阻塞,丟棄,learing,或轉(zhuǎn)發(fā)
D.RSTP還使用STP proprsal-協(xié)議序列
E.RSTP使用相同的定時(shí)器baseed過(guò)程STP上點(diǎn)至點(diǎn)鏈接
F.在點(diǎn)到點(diǎn)鏈路提供比STP更快的傳輸和轉(zhuǎn)發(fā)

9.多項(xiàng)選擇題

Refer to the exhibit.A junior network administrator was given the task of configuring port security on SwitchA to allow only PC_A to access the switched network through port fa0/1. If any other device is detected, the port is to drop frames from this device. The administrator configured the interface and tested it with successful pings from PC_A to RouterA, and then observes the output from these two show commands. Which two of these changes are necessary for SwitchA to meet the requirements?()

A.Port security needs to be globally enabled.
B.Port security needs to be enabled on the interface.
C.Port security needs to be configured to shut down the interface in the event of a violation.
D.Port security needs to be configured to allow only one learned MAC address.
E.Port security interface counters need to be cleared before using the show command.
F.The port security configuration needs to be saved to NVRAM before it can become active.

10.單項(xiàng)選擇題Which spread spectrum technology does the 802.11b standard define for operation?()

A.IR
B.DSSS
C.FHSS
D.DSSS and FHSS
E.IR, FHSS, and DSSS

最新試題

請(qǐng)參見(jiàn)圖示。主機(jī)A 和B 無(wú)法互相通信。此問(wèn)題的原因是什么?()

題型:?jiǎn)雾?xiàng)選擇題

請(qǐng)參見(jiàn)圖示。圖中所示路由表所屬的PC 已正確配置。IP 地址192.168.1.254屬于哪一個(gè)網(wǎng)絡(luò)設(shè)備或接口?()

題型:?jiǎn)雾?xiàng)選擇題

請(qǐng)參見(jiàn)圖示。RouterB 已經(jīng)過(guò)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(wú)法成功ping 通RouterB 的Fa0/0接口。應(yīng)在RouterA 上采取什么措施來(lái)解決此問(wèn)題?()

題型:?jiǎn)雾?xiàng)選擇題

在路由器上使用Router#copy running-config startup-config 命令會(huì)產(chǎn)生什么效果?()

題型:?jiǎn)雾?xiàng)選擇題

請(qǐng)參見(jiàn)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

在配置路由器時(shí),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(huì)看到下列哪一項(xiàng)提示?()

題型:?jiǎn)雾?xiàng)選擇題

請(qǐng)參見(jiàn)圖示。在網(wǎng)絡(luò)中,PC1向PC2發(fā)送了一條消息。PC2收到的幀如圖所示。該幀中的哪一信息確定了正確的目的應(yīng)用程序?()

題型:?jiǎn)雾?xiàng)選擇題

請(qǐng)參見(jiàn)圖示。主機(jī)X 和主機(jī)Y 與本地網(wǎng)絡(luò)的通信受到限制。此問(wèn)題的原因是什么?()

題型:?jiǎn)雾?xiàng)選擇題

以下哪兩種介質(zhì)可提供高達(dá)1Gb/s 的帶寬?()

題型:多項(xiàng)選擇題

請(qǐng)參見(jiàn)圖示。網(wǎng)絡(luò)中的所有設(shè)備均使用默認(rèn)配置。此拓?fù)渲行枰嗌賯€(gè)邏輯地址范圍?()

題型:?jiǎn)雾?xiàng)選擇題