單項選擇題Which command shows your active Telnet connections?()

A.show session
B.show cdpneighbors
C.show users
D.show queue


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1.多項選擇題PKI由哪些主要組件()

A.PKI用戶
B.用于密鑰管理的CA
C.存儲和協(xié)議
D.支持法律框架

2.多項選擇題What two statistics appear in show frame-relay map output?()

A.The number of FECN packets that are received by the router
B.The number of BECN packets that are received by the router.
C.The ip address of the local router
D.The value of the local DLCI
E.The status of the PVC that is configured on the router

3.多項選擇題使用數(shù)字簽名可以提供哪些服務()

A.使用數(shù)字簽名的數(shù)據(jù)的真實性
B.使用數(shù)字簽名的數(shù)據(jù)的完整性
C.使用數(shù)字簽名的數(shù)據(jù)的可靠性
D.交易的不可否認性

4.單項選擇題Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwiseconfigured for these vty line protocols?()

A.transport type all
B.transport output all
C.transport preferred all
D.transport input all

5.多項選擇題數(shù)字簽名在以下哪些場合使用()

A.提供數(shù)據(jù)源的唯一證據(jù)
B.證明PKI證書的真實性和完整性
C.使用一個被信任的時間源來提供一個安全的時間戳
D.通過使用一個用戶的私鑰和它產(chǎn)生的簽名對該用戶進行認證

7.多項選擇題What are two characteristics of a switch that is configured as a VTP client?()

A.if a switch that is configured to operate in client mode cannot access a VTP server,then the switch reverts to transparent mode.
B.The local vlan configuration is updated only when an update that has a higher configuration revision number is received.
C.Vtp advertisements are not forwarded to neighboring switches that are configured in vtp transparent mode.
D.When switches in vtp client mode are rebooted,they send a vtp advertisement request to the vtp servers.
E.Vtp client is the default vtp mode
F.On switches that are configured to operate in client mode ,vlans can be created,deleted,or renamed locally

8.多項選擇題下列哪些算法是非對稱密鑰算法()

A.IKE
B.安全套階層
C.SSH
D.PGP

10.單項選擇題Which dose the frame-relay interface-dlci command configure?()

A.remote DLCI on the main interface
B.local DLCI on the main interface
C.local DLCI on the subinterface
D.remote DLCI on the subinterface