AI&DS - IV Semester -Computer Networks - CAT- 1

The protocol data unit(PDU) for the application layer in the Internet stack is

• A.Segment
• B.Datagram
• C. Message
• D. Frame

Protocols are?

• A. Agreements on how communication components and DTE's are to communicate
• B. Logical communication channels for transferring data
• C. Physical communication channels sued for transferring data
• D. None of above

In the IPv4 addressing format, the number of networks allowed under Class C addresses is

• A. 2^14
• B. 2^7
• C. 2^24
• D. 2^21

Consider different activities related to email. m1:Send an email from a mail client to mail server m2:Download an email from mailbox server to a mail client m3:Checking email in a web browser

• (A) m1:HTTP, m2:SMTP, m3:POP
• (B) m1:SMTP, m2:FTP, m3:HTTP
• (C) m1:SMTP, m2:POP, m3:HTTP
• (D) m1:POP, m2:SMTP, m3:IMAP

What is the minimum header size of an IP packet?

• A. 16 bytes
• B. 10 bytes
• C. 20 bytes
• D. 32 bytes

6.The management of data flow between computers or devices or between nodes in a network is called

• A. Flow control
• B. Data Control
• C. Data Management
• D. Flow Management

Which one of the following is not a function of network layer?

• a) routing
• b) inter-networking
• c) congestion control
• d) error control

In virtual circuit network each packet contains ___________

• a) full source and destination address
• b) a short VC number
• c) only source address
• d) only destination address

Which of the following is not correct in relation to multi-destination routing?

• a) is same as broadcast routing
• b) contains the list of all destinations
• c) data is not sent by packets
• d) there are multiple receivers

Which is not a application layer protocol?

• a) HTTP
• b) SMTP
• c) FTP
• d) TCP