PREVIOUS YEAR SOLVED PAPERS - December 2015 Paper 3
- Option : A
- Explanation : A network with 10 Mbps bandwidth can pass 15,000 frames and each frame carries 8,000 bit i.e. 120,000,000 bits per minute. i.e. 120,000,000 / 60 = 2,000,000 = 2 Mbps. So, option (A) is correct.
- Option : A
- Explanation : Eight clusters, each containing 9 regions of 10 routers is a 3 level hierarchy. Each router needs 10 entries for the local router, 8 entries for routing the other regions, and for distant clusters it needs 7 entries. i.e. total 10 + 8 + 7 = 25 entries. So, option (A) is correct.
13. In classful addressing, the IP addresses with 0 (zero) as network number :
- Option : A
- Explanation : In classful addressing, the IP addresses with 0 (zero) as network number refers to the current network.Â
14. In electronic mail, which of the following protocols allows the transfer of multimedia messages?
- Option : D
- Explanation :
- Internet Message Access Protocol (IMAP) is used to retrieve emails from mail server.
- Simple mail transfer protocol(SMTP) is a Internet standard for email communication.
- Multipurpose Internet Mail Extensions (MIME) protocol allows the transfer of multimedia messages.
- POP3 (Post Office Protocol 3) is the most recent version of a standard protocol for receiving e-mail.
So, option (D) is correct.
- Option : C
- Explanation : File of 100,000 character will take 8 * 100,000 = 800,000 bits. Device sends the data @ 2000 bps. 2000 bits take 1 sec. 1 bit will take 1 / 2000 second. 800,000 bits will take 800,000 * (1 / 2000) = 400 sec. So, option (C) is correct.
