单选题A web server is running correctly but sending a RST packet to any client trying to connect using HTTP on TCP port 80. Which of the following tools should be used to determine the listening port of the web server?（）A RouteB IfconfigC NetstatD Nslookup

题目
单选题
A web server is running correctly but sending a RST packet to any client trying to connect using HTTP on TCP port 80. Which of the following tools should be used to determine the listening port of the web server?（）
A

Route

B

Ifconfig

C

Netstat

D

Nslookup

相似考题

1.Interface ge-0/0/2.0 of your device is attached to the Internet and is configured with an IP address and network mask of 71.33.252.17/24. A Web server with IP address 10.20.20.1 is running an HTTP service on TCP port 8080. The Web server is attached to the ge-0/0/0.0 interface of your device. You must use NAT to make the Web server reachable from the Internet using port translation.Which type of NAT must you configure?（）A. source NAT with address shiftingB. pool-based source NATC. static destination NATD. pool-based destination NAT

2.The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer （ ） between a client and server on a computer network.FTP is built on a （请作答此空） model architecture using separate control and data connections between the client and the server. FTP users may authenticate themselves with a （ ） sign-in protocol, normally in the form of a username and password, but can connect anonymously if the server is configured to allow it. For secure transmission that protects the username and password, and encrypts the content, FTP is often secured with SSL/TLS (FTPS) or replaced with SSH File Transfer Protocol (SFTP).The first FTP client applications were （ ） programs developed before operating systems had graphical user interfaces, and are still shipped with most Windows, Unix, and Linux operating systems. Many FTP clients and automation utilities have since been developed for desktops, servers, mobile devices, and hardware, and FTP has been incorporated into productivity applications, such as HTML editors.FTP may run in （ ） mode, which determines how the data connection is established. In both cases, the client creates a TCP control connection from a random, usually an unprivileged, port N to the FTP server command port 21.In active mode, the client starts listening for incoming data connections from the server on port M. It sends the FTP command PORT M to inform the server on which port it is listening. The server then initiates a data channel to the client from its port 20, the FTP server data port.In situations where the client is behind a firewall and unable to accept incoming TCP connections, passive mode may be used. In this mode, the client uses the control connection to send a PASV command to the server and then receives a server IP address and server port number from the server, which the client then uses to open a data connection from an arbitrary client port to the server IP address and server port number received.Both modes were updated in September 1998 to support IPv6. Further changes were introduced to the passive mode at that time, updating it to extended passive mode.A.browser-server B.user- server C.client-server D.business -customer

3.The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer （ ） between a client and server on a computer network.FTP is built on a （ ） model architecture using separate control and data connections between the client and the server. FTP users may authenticate themselves with a （ ） sign-in protocol, normally in the form of a username and password, but can connect anonymously if the server is configured to allow it. For secure transmission that protects the username and password, and encrypts the content, FTP is often secured with SSL/TLS (FTPS) or replaced with SSH File Transfer Protocol (SFTP).The first FTP client applications were （请作答此空） programs developed before operating systems had graphical user interfaces, and are still shipped with most Windows, Unix, and Linux operating systems. Many FTP clients and automation utilities have since been developed for desktops, servers, mobile devices, and hardware, and FTP has been incorporated into productivity applications, such as HTML editors.FTP may run in （ ） mode, which determines how the data connection is established. In both cases, the client creates a TCP control connection from a random, usually an unprivileged, port N to the FTP server command port 21.In active mode, the client starts listening for incoming data connections from the server on port M. It sends the FTP command PORT M to inform the server on which port it is listening. The server then initiates a data channel to the client from its port 20, the FTP server data port.In situations where the client is behind a firewall and unable to accept incoming TCP connections, passive mode may be used. In this mode, the client uses the control connection to send a PASV command to the server and then receives a server IP address and server port number from the server, which the client then uses to open a data connection from an arbitrary client port to the server IP address and server port number received.Both modes were updated in September 1998 to support IPv6. Further changes were introduced to the passive mode at that time, updating it to extended passive mode.A.command-line B.graphical C.automation D.productivity

4.Which of the following is the BEST way to allow web software through the server firewall?()A. Implement an application exception.B. Implement an access control list (ACL).C. Open the corporate firewall to allow port 80.D. Implement port blocking on port 80.

更多“单选题A web server is running correctly but sending a RST packet to any client trying to connect using HTTP on TCP port 80. Which of the following tools should be used to determine the listening port of the web server?（）A RouteB IfconfigC NetstatD Nslookup”相关问题

  • 第1题：

    Interface ge-0/0/2.0 of your device is attached to the Internet and is configured with an IP address and network mask of 71.33.252.17/24. A Web server with IP address 10.20.20.1 is running an HTTP service on TCP port 8080. The Web server is attached to the ge-0/0/0.0 interface of your device. You must use NAT to make the Web server reachable from the Internet using port translation. Which type of NAT must you configure?（）

    • A、source NAT with address shifting
    • B、pool-based source NAT
    • C、static destination NAT
    • D、pool-based destination NAT

    正确答案:D

  • 第2题：

    You are a systems administrator troubleshooting a problem with accessing a Web server running WindowsServer 2008. Previously， another administrator created and installed a server certificate on the computer.Users report that they are able to connect to the site using HTTP but that they receive a warning in InternetExplorer when trying to connect by HTTPS. You want to enable users to connect using both HTTP andHTTPS. You attempt to access the site by using an instance of Internet Explorer on the server itself， andyou receive the same warning message for HTTPS connections. How can you resolve this issue？（）

    • A、Change the site binding for the Web site to enable connections on port 443.
    • B、Change the SSL settings for the Web site to enable the Require SSL option.
    • C、Obtain and install an Internet Certificate on the Web server.
    • D、Export and re import the existing security certificate.

    正确答案:C

  • 第3题：

    Which of the following is the BEST way to allow web software through the server firewall?（）

    • A、Implement an application exception.
    • B、Implement an access control list (ACL).
    • C、Open the corporate firewall to allow port 80.
    • D、Implement port blocking on port 80.

    正确答案:B

  • 第4题：

    A user reports being occasionally disconnected from the server. Which of the following tools couldthe technician use to determine if it is the client or the server that is dropping the connection?（）

    • A、Packet sniffer
    • B、Multimeter
    • C、Load balancer
    • D、Throughput tester

    正确答案:A

  • 第5题：

    You work as the enterprise exchange administrator at Company.com.The Company.com network consists of a single Active Directory domain named Company.com.Company.com has an Exchange Server 2010 organization.the Company.com contains an exchange server 2010 server named -ex10 that has imap4 installed.The users of .com use imap4 via the internet to connect to -ex10.you have received instructions from the cio to make sure that the can use -ex10 to connect to the internet.What should you do？（）

    • A、you should consider running the test-imapconnectivity cmdlet from -ex10.
    • B、You should consider using Telnet to connect to TCP port 587 from a client computer.
    • C、You should consider using Telnet to connect to TCP port 143 from a client computer.
    • D、you should consider running the test-outlookconnectivity cmdlet from -ex10.

    正确答案:B

  • 第6题：

    You have a server that runs Windows Server 2003 Service Pack 2 （SP2）.You need to get a list of all the open connections on the server and all the port numbers used by the connections. Which tool should you use？（）

    • A、Nbtstat
    • B、Netsh
    • C、Netstat
    • D、Nslookup

    正确答案:C

  • 第7题：

    单选题
    A technician works for a company that has recently been affected by a virus. The virus entered the network by using port 6000. Port 6000 is used by an application located on a server. The technician has been asked to block this port on all servers and computers except for the one server which uses this port. Which of the following should the technician do？（）
    A

    Update the antivirus application

    B

    Install critical update security patches

    C

    Adjust the software firewall settings

    D

    Replace the current antivirus program


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    You have a DNS server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). You have two Web servers named Server2 and Server3.The Web servers host an internal Web site that will be accessed by the URL http://www.contoso.com. You need to ensure that requests for www.contoso.com are distributed between Server2 and Server3. What should you do?（）
    A

    On each Web server, configure a host header value of www.contoso.com. 

    B

    On each Web server, configure a custom HTTP header value of www.contoso.com. 

    C

    On Server1, create two host (A) records for www.contoso.com. 

    D

    On Server1, create a _roundrobin._tcp.contoso.com service locator (SRV) record for each server that has a port value of 80. 


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    You need to specify the changes to the existing firewall configuration settings that are required by the HTTP endpoint that will be used by the proseware_projects database. What should you do？（）
    A

    Create a Web publishing rule on ISA2 that allows HTTP traffic on port 5017 from IIS1 to the SQL Server computer.

    B

    Create a Web publishing rule on ISA1 that allows HTTP traffic on port 5017 from IIS1 to the SQL Server computer.

    C

    Create a Web publishing rule on ISA2 that allows HTTPS traffic on port 5017 from IIS1 to the SQL Server computer.

    D

    Create a Web publishing rule on ISA1 that allows HTTPS traffic on port 5017 from IIS1 to the SQL Server computer.


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    A web server is running correctly but sending a RST packet to any client trying to connect using HTTP on TCP port 80. Which of the following tools should be used to determine the listening port of the web server?（）
    A

    Route

    B

    Ifconfig

    C

    Netstat

    D

    Nslookup


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    You are a systems administrator troubleshooting a problem with accessing a Web server running WindowsServer 2008. Previously， another administrator created and installed a server certificate on the computer.Users report that they are able to connect to the site using HTTP but that they receive a warning in InternetExplorer when trying to connect by HTTPS. You want to enable users to connect using both HTTP andHTTPS. You attempt to access the site by using an instance of Internet Explorer on the server itself， andyou receive the same warning message for HTTPS connections. How can you resolve this issue？（）
    A

    Change the site binding for the Web site to enable connections on port 443.

    B

    Change the SSL settings for the Web site to enable the Require SSL option.

    C

    Obtain and install an Internet Certificate on the Web server.

    D

    Export and re import the existing security certificate.


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    You have an Exchange Server 2010 server that has IMAP4 enabled.All users connect to the Exchange server by using an IMAP4 client.You need to verify whether users can send e-mail to the Internet by using the Exchange server. What should you do？（）
    A

    From the server， run the Test-ImapConnectivity cmdlet.

    B

    From the server， run the Test-OutlookConnectivity cmdlet.

    C

    From a client， attempt a connection to TCP port 143 by using Telnet.

    D

    From a client， attempt a connection to TCP port 587 by using Telnet.


    正确答案： D
    解析： 暂无解析

  • 第13题：

    You need to specify the changes to the existing firewall configuration settings that are required by the HTTP endpoint that will be used by the proseware_projects database. What should you do？（）

    • A、Create a Web publishing rule on ISA2 that allows HTTP traffic on port 5017 from IIS1 to the SQL Server computer.
    • B、Create a Web publishing rule on ISA1 that allows HTTP traffic on port 5017 from IIS1 to the SQL Server computer.
    • C、Create a Web publishing rule on ISA2 that allows HTTPS traffic on port 5017 from IIS1 to the SQL Server computer.
    • D、Create a Web publishing rule on ISA1 that allows HTTPS traffic on port 5017 from IIS1 to the SQL Server computer.

    正确答案:D

  • 第14题：

    Which of the following could be used to restrict access to the local web server to only certain IP addresses？（）

    • A、 Create an ACL.
    • B、 Create an application exception.
    • C、 Configure IPSec.
    • D、 Block port 80.

    正确答案:A

  • 第15题：

    A web server is running correctly but sending a RST packet to any client trying to connect using HTTP on TCP port 80. Which of the following tools should be used to determine the listening port of the web server?（）

    • A、Route
    • B、Ifconfig
    • C、Netstat
    • D、Nslookup

    正确答案:C

  • 第16题：

    You have a DNS server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). You have two Web servers named Server2 and Server3.The Web servers host an internal Web site that will be accessed by the URL http://www.contoso.com. You need to ensure that requests for www.contoso.com are distributed between Server2 and Server3. What should you do?（）

    • A、On each Web server, configure a host header value of www.contoso.com. 
    • B、On each Web server, configure a custom HTTP header value of www.contoso.com. 
    • C、On Server1, create two host (A) records for www.contoso.com. 
    • D、On Server1, create a _roundrobin._tcp.contoso.com service locator (SRV) record for each server that has a port value of 80. 

    正确答案:C

  • 第17题：

    You are a systems administrator who is attempting to troubleshoot a problem with accessing a Web site ona computer running Windows Server 2008. In the past， users have been able to access the Web site byusing http：//hr.contoso.com. However， when they attempt to access the site now， they receive the errormessage "Internet Explorer Cannot Display The Web page." Which of the following steps should you taketo resolve the error？（）

    • A、Using Server Manager， add the HTTP Errors server role.
    • B、Using Server Manager， verify that the World Wide Web Publishing Service has been started.
    • C、Verify the configuration of the usersWeb browsers.
    • D、Using Server Manager， add the HTTP Logging server role.

    正确答案:B

  • 第18题：

    You have an Exchange Server 2010 server that has IMAP4 enabled.All users connect to the Exchange server by using an IMAP4 client.You need to verify whether users can send e-mail to the Internet by using the Exchange server. What should you do？（）

    • A、From the server， run the Test-ImapConnectivity cmdlet.
    • B、From the server， run the Test-OutlookConnectivity cmdlet.
    • C、From a client， attempt a connection to TCP port 143 by using Telnet.
    • D、From a client， attempt a connection to TCP port 587 by using Telnet.

    正确答案:D

  • 第19题：

    单选题
    Which of the following is the BEST way to allow web software through the server firewall？（）
    A

    Implement an application exception.

    B

    Implement an access control list （ACL）.

    C

    Open the corporate firewall to allow port 80.

    D

    Implement port blocking on port 80.


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Which of the following is the MOST common secure web server port?（）
    A

    22

    B

    80

    C

    110

    D

    443


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Which of the following could be used to restrict access to the local web server to only certain IP addresses？（）
    A

     Create an ACL.

    B

     Create an application exception.

    C

     Configure IPSec.

    D

     Block port 80.


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    You have a Web server named Web1 that runs Windows Server 2003 Service Pack 2 （SP2）. Users on the internal network connect to the Web site on Web1 by using the URL http：//www.contoso.com. From the Internet， you cannot connect to the Web site by using the URL http：//www.contoso.com.  You can connect to the Web site by using the public IP address of Web1. You need to ensure that users on the Internet can connect to the Web site on Web1 by using the URL http：//www.contoso.com. You deploy a DNS server that is accessible on the Internet.  What should you do next？（）
    A

    Create a stub zone for contoso.com.

    B

    Create a primary zone for contoso.com.

    C

    Create a secondary zone for contoso.com.

    D

    Configure a conditional forwarder for contoso.com.


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Interface ge-0/0/2.0 of your device is attached to the Internet and is configured with an IP address and network mask of 71.33.252.17/24. A Web server with IP address 10.20.20.1 is running an HTTP service on TCP port 8080. The Web server is attached to the ge-0/0/0.0 interface of your device. You must use NAT to make the Web server reachable from the Internet using port translation. Which type of NAT must you configure?（）
    A

    source NAT with address shifting

    B

    pool-based source NAT

    C

    static destination NAT

    D

    pool-based destination NAT


    正确答案： C
    解析： 暂无解析

  • 第24题：

    单选题
    You work as the enterprise exchange administrator at Company.com.The Company.com network consists of a single Active Directory domain named Company.com.Company.com has an Exchange Server 2010 organization.the Company.com contains an exchange server 2010 server named -ex10 that has imap4 installed.The users of .com use imap4 via the internet to connect to -ex10.you have received instructions from the cio to make sure that the can use -ex10 to connect to the internet.What should you do？（）
    A

    you should consider running the test-imapconnectivity cmdlet from -ex10.

    B

    You should consider using Telnet to connect to TCP port 587 from a client computer.

    C

    You should consider using Telnet to connect to TCP port 143 from a client computer.

    D

    you should consider running the test-outlookconnectivity cmdlet from -ex10.


    正确答案： B
    解析： 暂无解析

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