A user connects to the companys intranet server via a VPN connection from a small office / home office （SOHO） using the broadband service. One day， the user cannot successfully connect to the VPN and receives an error message that states "Username and password are invalid on the domain." Which of the following should be done to correct this problem？（）A、Call the corporate help desk to have the VPN server rebootedB、Re-enter the username and password in the VPN connection and reconnectC、Call the broadband Internet provider to replace the SOHO router with a newer modelD、Ping the corporate VPN server to ensure it is online
A user connects to the companys intranet server via a VPN connection from a small office / home office （SOHO） using the broadband service. One day， the user cannot successfully connect to the VPN and receives an error message that states "Username and password are invalid on the domain." Which of the following should be done to correct this problem？（）
- A、Call the corporate help desk to have the VPN server rebooted
- B、Re-enter the username and password in the VPN connection and reconnect
- C、Call the broadband Internet provider to replace the SOHO router with a newer model
- D、Ping the corporate VPN server to ensure it is online
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In enterprises, the gateway is the computer that(71) the traffic from a workstation to the outside network that is serving the Web pages. In homes ,the gateway is the(72) that connects the user to the internet.A．findsB．searchesC．routesD．tracks
When a non－root user connects to a JUNOS platform and enters a username and password, the user is immediately placed at which level?() A.UNIX shellB.user level CLIC.configuration modeD.operational mode
Which of the following is the MOST accurate description of a L2／L3 switch?() A. Performs switching and routing dutiesB. A router that directly connects to a switchC. A multi-purpose switch fabric used in full mesh environmentsD. A switch that directly connects to a router
You have a standalone server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2).You install the FTP Server Windows component on Server1. You create several folders under the Ftproot folder as shown in the exhibit. (Click the Exhibit button.)A user named User1 connects to ftp://server1 and reports that he can view the Localuser folder and all of its subfolders. A user named User2 reports the same problem.You need to ensure that when users connect to ftp://server1, they can only view the content located under their user folder.What should you do? （）A. From the properties of the Default FTP Site, change the directory listing style to Unix.B. From the properties of the Default FTP Site, change the FTP site directory to c:\inetpub\ftproot\localuser.C. From the properties of each user account, modify the home folder. Remove the Users group from the access control list of c:\inetpub\ftproot.D. Delete the Default FTP Site. Create a new FTP site. Select the option to isolate users and specify the FTP site directory of c:\inetpub\ftproot.
In the fields of physical security and information security, access control is the selective restriction of access to a place or other resource. The act of accessing may mean consuming, entering, or using. Permission to access a resource is called authorization （授权）．An access control mechanism （71） between a user （or a process executing on behalf of a user） and system resources, such as applications, operating systems, firewalls, routers, files, and databases. The system must first authenticate（验证）a user seeking access. Typically the authentication function determines whether the user is （72） to access the system at all. Then the access control function determines if the specific requested access by this user is permitted. A security administrator maintains an authorization database that specifies what type of access to which resources is allowed for this user. The access control function consults this database to determine whether to（73）access. An auditing function monitors and keeps a record of user accesses to system resources.In practice, a number of（74）may cooperatively share the access control function. All operating systems have at least a rudimentary（基本的）, and in many cases a quite robust, access control component. Add-on security packages can add to the（75）access control capabilities of the OS. Particular applications or utilities, such as a database management system, also incorporate access control functions. External devices, such as firewalls, can also provide access control services.A.cooperatesB.coordinates C.connects D.mediates
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