ÄÄÇ»Åͳ×Æ®¿öÅ© Quiz #1 (2015³â º½Çбâ, 2015³â 4¿ù2ÀÏ)
1. (O/X) ´ÙÀ½ °¢ ¹®Ç×ÀÇ ³»¿ëÀÌ ¸ÂÀ¸¸é O, Ʋ¸®¸é X ¸¦ ÀûÀ¸½Ã¿À. ´Ü, X·Î ¼±ÅÃÇÑ °æ¿ì¿¡´Â ÀÌÀ¯¸¦ ÇÔ²² ÀûÀ¸½Ã¿À. ÀÌÀ¯°¡ À߸øµÈ °æ¿ì¿¡´Â Ʋ¸° °ÍÀ¸·Î °£Áֵ˴ϴÙ. °¢ ¹®Ç×´ç Á¡¼ö´Â 5Á¡À̸ç, ´äÀ» À߸ø ÀûÀº °æ¿ì °æ¿ì¿¡´Â 0Á¡ÀÌ ¾Æ´Ñ -5Á¡À» ¹Þ°Ô µÇ´Ï ÁÖÀÇÇÏ¿© ´äÀ» ÀÛ¼ºÇϽÿÀ. (1) The TCP service model includes a connectionless service and a reliable data transfer service. (2) HTTP is a stateless protocol. However, it is often desirable for a Web site to identify users, either because the server wishes to restrict user access or because it wants to serve content as a function of the user identity. For these purposes, HTTP uses cookies. (3) In non-persistent connections in HTTP, all of the requests and their corresponding responses are sent over the same TCP connection. (4) FTP sends the control information out-of-band, while HTTP sends it in-band. (5) When a user agent accesses and obtains the mail messages from its mail box in a mail server, it uses SMTP. (6) DNS provides a directory service that translates hostnames to IP addresses only. (7) There are three classes of DNS servers: root DNS servers, top-level domain (TLD) servers, and local DNS servers. (8) P2P network is an overlay network, in which the peers form an abstract logical network which resides above the ¡°underlay¡± computer network consisting of physical links, routers, and hosts.
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