更多"[单选题]The File Transfer Protocol (FT"的相关试题:
[单选题]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 （ ） 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 （请作答此空） 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.system
B.active
C.passive
D.active or passive
[单选题]The Hypertext Transfer Protocol , the Web's (请作答此空) protocol , is at the heart of the Web. HTTP is implemented in two programs : a ( ) program and a server program . The client program and server program executing on different end systems , talk to each other by ( ) HTTP messages . HTTP defines how Web clients request Web pages from servers and how servers transfer web pages to clients . when a user ( ) a web page , the browser sends http request messages for the objects in the page to the server . The server ( ) the requests and responds with http response messages that contain the objects .
A.transport-layer
B.application-layer
C.network-layer
D.link-layer
[单选题]The Hypertext Transfer Protocol,the Web's（请作答此空）protocol,is at the heart of the Web.HTTP is implemented in two programs:a（ ）program and a server program.The client program and server program executing on different end systems,talk to each other by（ ）HTTP messages.HTTP defines how Web clients request Web pages from servers and how servers transfer web pages to clients.when a user（ ）a web page,the browser sends http request messages for the objects in the page to the server.The server（ ）the requests and responds with http response messages that contain the objects.
A.transport-layer
B.application-layer
C.network-layer
D.link-layer
[单选题]The Hypertext Transfer Protocol,the Web's（ ）protocol,is at the heart of the Web.HTTP is implemented in two programs:a（ ）program and a server program.The client program and server program executing on different end systems,talk to each other by（请作答此空）HTTP messages.HTTP defines how Web clients request Web pages from servers and how servers transfer web pages to clients.when a user（ ）a web page,the browser sends http request messages for the objects in the page to the server.The server（ ）the requests and responds with http response messages that contain the objects.
A.exchanging
B.changing
C.declining
D.removing
[填空题] HTTP(Hyper Text Transfer Protocol)称为( ) 。(李志球 《计算机网络基础》第5版 P236)
[单选题]The TCP protocol is a （ ） layer protocol.
A.physical
B.network
C.transport
D.application
[单选题] 假如授权用户的用户名为"user",密码为"password",FTP服务器的IP地址为"202.117.112.8",域名为ftp.xidian.edu.cn ,那么, 实现对该FTP站点的访问,需要在地址栏中键入_________。
A. 202.117.112.8
B. ftp://user:password@202.117.112.8
C. http://ftp.xidian.edu.cn
D. http://user:password@202.117.112.8
[单选题]将数据从 FTP 客户传输 FTP 服务器上，称为（ ）。
A.数据下载
B.数据上传
C.宽带连接
D.FTP 服务
[单选题]The Dynamic Host Configuration Protocol provides configuration parameters to Internet（ ）.DHCP consists of two components:a（ ）for delivering host-specifie configuration parameters from a DHCP server to a host and a mechanism for allocation of network addresses to hosts.DHCP is built on a client-server model,where designated DHCP server hosts allocate network addresses and deliver（ ）parameters to dynamically configured hosts.DHCP supports three mechanisms for IP address allocation.In“automatic allocation”,DHCP assigns a（本题）IP address to client.In“dynamic allocation”,DHCP assigns an IP address to a client for a limited period of time.In“manual allocation”,a client’s IP address is assigned by the network（ ）,and DHCP is used simply to convey the assigned address to the client.
A.permanent
B.dynamic
C.connection
D.session
[单选题]FTP客户和服务器间传递FTP命令时，使用的连接是()。
A.建立在TCP之上的控制连接
B.建立在UDP之上的控制连接
C.建立在TCP之上的数据连接
D.建立在UDP之上的数据连接
