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單項(xiàng)選擇題Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch overFastEthernet？（）

A.802.3ad
B.802.1w
C.802.1Q
D.802.1d

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1.多項(xiàng)選擇題相對(duì)標(biāo)準(zhǔn)和靜態(tài)擴(kuò)展ACL，動(dòng)態(tài)ACL有哪些優(yōu)勢(shì)（）

A.每個(gè)用戶的挑戰(zhàn)驗(yàn)證機(jī)制
B.簡(jiǎn)化路由器對(duì)ACL的處理
C.降低網(wǎng)絡(luò)黑客對(duì)網(wǎng)絡(luò)的攻擊機(jī)會(huì)
D.在不損害其他安全配置的前提下，可以動(dòng)態(tài)的讓用戶穿越防火墻

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2.單項(xiàng)選擇題Which component of VPN technology ensures that data can be read only by its intended recipient?（）

A.data integrity
B.encryption
C.key exchange
D.authentication

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3.多項(xiàng)選擇題Which router IOS commands can be used to troubleshoot LAN connectivity problems？（）

A.ping
B.tracert
C.ipconfig
D.show ip route
E.winipcfg
F.show interfaces

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4.單項(xiàng)選擇題Which command helps a network administrator to manage memory by displaying flash memory andNVRAM utilization？（）

A.show secure
B.show file systems
C.show flash
D.show version

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5.單項(xiàng)選擇題What is the effect of using the service password-encryption command？（）

A.nly passwords configured after the command has been entered will be encrypted.
B.Only the enable password will be encrypted.
C.Only the enable secret password will be encrypted
D.It will encrypt the secret password and remove the enable secret password from the configuration.
E.It will encrypt all current and future passwords.

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