单选题The user cannot access some Internet websites, but can connect to resources inside the local network. The technician successfully uses the ping command to test the user’s connectivity. Which of the following commands can the technician run NEXT to troubleshoot the issue?（）A net /?B ipconfig /flushdnsC netstat -rD nbtstat -R

考题 WWW is popular for its multimedia transmission and friendly(71). Although the speed of network has been improved considerably in recent years, the rapid(72)of using the Internet, the inherited character of delay in the network and the Request/Response working mode of WWW still make the Internet traffic very(73)and give no guarantee on the Quality of Service. Because HTTP has no states, the web server cannot know the users' demand and the users' requests cannot be predicted Taking advantage of a cache mechanism and the time locality of WWW accesses, the browser can preserve the documents ever accessed in the local machine. By this means, for the documents in the local cache, the browser does not need to send the requests to the remote server or to receive the whole responses from the remote one Pre-fetching uses the space locality of accesses First, the users' access requests are predicted according to the users' current request. Secondly, the expected pages are fetched into the local cache when the user is brow sing the current page. Finally, the users can access these pages downloaded from the local cache. And this can reduce the access delay to some degrees. Pre-fetching is one kind of active caches that can cache the pages which are still not requested by the user. The application of pre-fetching technology in the web can greatly reduce the waiting time after users have sent their requests. This paper brings forward an intelligent technique of web pre-fetching, which can speed up fetching web pages. In this technique, we use a simplified WWW data model to represent the data in the cache of web browser to mine the association rules. We store these rules in a knowledge base so as to(74)the user's actions. In the client sides, the agents are responsible for mining the users' interest and pre-fetching the web pages, which are based on the interest association repository. Therefore it is(75)for the users to speed up the browsing.A．interactiveB．interactionC．interactivityD．infection

查看答案

考题 A group of users report that they can access local resources but cannot access the Internet. Which of the following should the administrator use to test connectivity?() A. tracertB. msconfigC. routeD. net use

查看答案

考题 A network engineer wants to allow a temporary entry for a remote user with a specific usename and password so that the user can access the entire network over the internet.which ACL can be used?() A. reflexiveB. extendedC. standardD. dynamic

查看答案

考题 A user in the op_storage group logs onto the DS GUI and goes to the User Administration panel. Which users can be seen and what actions can be performed（）A、the user can see all other users， including those in the Admin group， but can modify only the user accounts in theOp_volume and Monitor groupB、the user can see all the users except those in the Admin group， but can only modify the user’s own accountC、the user can see only the user’s own account， and cannot modify itD、the user can see only the user’s own account， and can change the password only

查看答案

考题 A user reports that the Windows update function will not run on the computer but the Internet can be accessed. The user is running an original version of Windows XP Professional. Which of the following is MOST likely the cause？（）A、The user has not registered the copy of Windows.B、The user has not applied at least Service Pack 1 to their system.C、The user does not know what site to access for the updates.D、The user needs to flush the DNS cache.

查看答案

考题 A user typically connects to the Internet in one of two ways： dedicated access and（）access.A、 broadcastingB、 point-to-pointC、 dial-upD、 Internet

查看答案

考题 Which of these is a benefit of using Network Admission Control instead of Cisco Identity Based Networking Services?（）A、NAC can authenticate using 802.1X and IBNS cannotB、NAC can ensure only compliant machines connect and IBNS cannotC、NAC can ensure access to the correct network resources and IBNS cannotD、NAC can manage user mobility and reduce overhead costs and IBNS cannot

查看答案

考题 A network engineer wants to allow a temporary entry for a remote user with a specific usename and password so that the user can access the entire network over the internet.which ACL can be used?（）A、reflexiveB、extendedC、standardD、dynamic

查看答案

考题 A virus has been removed from the user’s machine, but the user still cannot access the Internet.Which of the following should the technician check NEXT?（）A、Disable port forwarding on the router.B、Reboot to Safe Mode and see if the Internet is accessible.C、Format the machine and reinstall the OS.D、Check the web browser’s proxy settings.

查看答案

考题 A group of users report that they can access local resources but cannot access the Internet. Which of the following should the administrator use to test connectivity？（）A、 tracertB、 msconfigC、 routeD、 net use

查看答案

考题 An administrator replaces the network card in a web server. After replacing the network card some users can access the server but others cannot. Which of the following is the FIRST thing the administrator should check？（）A、 Default gatewayB、 The ports on the switchC、 Port security on the servers switch portD、 Ethernet cable

查看答案

考题 An administrator replaces the network card in a web server. After replacing the network card some users can access the server but others cannot. Which of the following is the FIRST thing the administrator should check?（）A、Default gatewayB、The ports on the switchC、Port security on the server's switch portD、Ethernet cable

查看答案

考题 A user took a laptop on vacation and made changes to the configuration in order to use the device at the hotel. The user can reach the Internet, but cannot access any internal network resources. Which of the following is the MOST likely reason?（）A、Incorrect DNSB、Incorrect subnet maskC、Duplicate IP addressD、Incorrect SSID

查看答案

考题 A gateway machine has access to the Internet and is trying to reach a machine on the Internet called cactus.org. Although the gateway machine cannot reach cactus.org， another network across town is able to reach cactus.org. Furthermore， the gateway machine can reach the network across town， but cannot ping the cactus.org. Which of the following tools will best help diagnose the location of the problem？（）A、iptraceB、netstatC、tcpdumpD、traceroute

查看答案

考题 Which statements describe the capabilities of the DBMS_NETWORK_ACL_ADMIN package?（）A、It can be used to allow the access privilege settings for users but not roles.B、It can be used to allow the access privilege settings for users as well as roles.C、It can be used to control the time interval for which the access privilege is available to a user.D、It can be used to selectively restrict the access for each user in a database to different host computers.E、It can be used to selectively restrict a user's access to different applications in a specific host computer.

查看答案

考题 Examine the command： SQL ALTER USER skd ACCOUNT LOCK； Which two statements are true after the command is executed（）A、The SKD user cannot log in to the database instance.B、The objects owned by the SKD user are not accessible to any user.C、The other users can access the objects owned by the SKD user， on which they have access.D、The password for the SKD user expires and the user is forced to change the password at the next log in

查看答案

考题 You are the administrator of an Active Directory domain. All servers run Windows Server 2003. You configure a server named Server3 as the DNS server for the domain.The company recently started using a new ISP. Since the change to the new ISP occurred， users report that they cannot access Internet Web sites by using their fully qualified domain names （FQDNs）.You manually configure a test computer to use the DNS server address of the new ISP. The test computer can successfully access Internet Web sites by using their FQDNs.You need to ensure that network users can access Internet Web sites by using their FQDNs， while ensuring that user access to internal resources is not disrupted. What are two possible ways to achieve this goal？（）A、Create a root zone on Server3.B、Configure Server3 to use the default root hints.C、Configure a forwarder on Server3 to the new ISP’s DNS server.D、Configure all computers on your network to use the new ISP’s DNS server.

查看答案

考题 The user cannot access some Internet websites, but can connect to resources inside the local network. The technician successfully uses the ping command to test the user’s connectivity. Which of the following commands can the technician run NEXT to troubleshoot the issue?（）A、net /?B、ipconfig /flushdnsC、netstat -rD、nbtstat -R

查看答案

考题单选题A user reports that the Windows update function will not run on the computer but the Internet can be accessed. The user is running an original version of Windows XP Professional. Which of the following is MOST likely the cause？（）A The user has not registered the copy of Windows.B The user has not applied at least Service Pack 1 to their system.C The user does not know what site to access for the updates.D The user needs to flush the DNS cache.

查看答案

考题单选题A new building has been added to the enterprise campus network， providing client access for desktop PCs， laptops， and IP phones for employees and guests. During verification， only a few laptops using wireless are reported to have problems， while other desktops， IP phones， and most other wireless laptops are fully operational. Additional information received about the problem indicates that， while the problematic wireless laptops cannot reach internal corporate websites， they can reach the Internet. Where should troubleshooting about this connectivity issue be focused？（）A client network configurationB VLAN mappingC routing protocolsD first-hop redundancy protocol

查看答案

考题单选题A user in the op_storage group logs onto the DS GUI and goes to the User Administration panel. Which users can be seen and what actions can be performed（）A the user can see all other users， including those in the Admin group， but can modify only the user accounts in theOp_volume and Monitor groupB the user can see all the users except those in the Admin group， but can only modify the user’s own accountC the user can see only the user’s own account， and cannot modify itD the user can see only the user’s own account， and can change the password only

查看答案

考题单选题A user is unable to access the company website on a laptop. A network technician verifies that theuser can access other Internet pages. According to network troubleshooting methodology, which of the following steps should be taken NEXT?（）A Remotely connect to the user's laptop and review the network configuration settingsB Ping the web server from inside the network to ensure it is still up and running.C Check to make sure the company's website is accessible from the Internet.D Ensure the Ethernet cable is securely plugged into the user's laptop

查看答案

考题多选题Examine the command： SQL ALTER USER skd ACCOUNT LOCK； Which two statements are true after the command is executed（）AThe SKD user cannot log in to the database instance.BThe objects owned by the SKD user are not accessible to any user.CThe other users can access the objects owned by the SKD user， on which they have access.DThe password for the SKD user expires and the user is forced to change the password at the next log in

查看答案

考题单选题Typical ADSL broadband Internet access requires a username and password to be entered on end-userPC connected to the ADSL modem in order for the end user to gain access to the Internet.if a Cisco ADSLrouter is used instead of an ADSL modem，what functionality is required on the Cisco ADSL router so theend-user connected to the Cisco ADSL router can access the Internet without entering a username andpassword？（）A PPPoAB Route Bridge Encapsulation（RBE）C PPPoE clientD Integrated Routing and Bridging（IRB）E AAA

查看答案

考题单选题Which of these is a benefit of using Network Admission Control instead of Cisco Identity Based Networking Services？（）A NAC can authenticate using 802.1X and IBNS cannotB NAC can ensure only compliant machines connect and IBNS cannotC NAC can ensure access to the correct network resources and IBNS cannotD NAC can manage user mobility and reduce overhead costs and IBNS cannot

查看答案

考题单选题A group of users report that they can access local resources but cannot access the Internet. Which of the following should the administrator use to test connectivity？（）A tracertB msconfigC routeD net use

查看答案

考题多选题Examine the command： SQL ALTER USER skd ACCOUNT LOCK； Which two statements are true after the command is executed（）AThe SKD user cannot log in to the database instance.BThe objects owned by the SKD user are not accessible to any user.CThe other users can access the objects owned by the SKD user， on which they have access.DThe password for the SKD user expires and the user is forced to change the password at the next log in.

查看答案

考题多选题Which statements describe the capabilities of the DBMS_NETWORK_ACL_ADMIN package?（）AIt can be used to allow the access privilege settings for users but not roles.BIt can be used to allow the access privilege settings for users as well as roles.CIt can be used to control the time interval for which the access privilege is available to a user.DIt can be used to selectively restrict the access for each user in a database to different host computers.EIt can be used to selectively restrict a user's access to different applications in a specific host computer.

查看答案

网友您好， 请在下方输入框内输入要搜索的题目：

网友您好，请在下方输入框内输入要搜索的题目：