2. True or false? If a statement is false, explain briefly why it is wrong: a).

Question

2. True or false? If a statement is false, explain briefly why it is wrong: a). A user requests a Web page that consists of some text and 3 images. For this page, the client will send one request message and receive 4 response messages. b). With non-persistent connections between browser and origin server, it is possible for a single TCP segment to carry two distinct HTTP request messages. c). If we know the IP address of an email server, we can use "telnet hostname 25" to connect to it and send out a spam email manually to an arbitrary email address. d) DNS request and response usually rely on TCP packet for reliable data transfer e) When a user uses Microsoft Outlook to check his email, his computer relies on SMTP protocol for both sending and retrieving emails from his email server. f). DNS database has at least 4 types of resource records.

Explanation / Answer

a. False

b. False

c. False

No cannot spam unless until we know the userid and password of email server.

d. True

e. False

No outlook can send and recieve emails by mircrosoft exchange also.

f. True

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