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Data Communication and Networks (CBSE (UGC) NET)

Network protocols including TCP/IP, email protocols, network management, and configuration protocols

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following commands is used in SMTP mail exchange to notify the receiver that the message contents will follow?

  1. HELO
  2. MAIL
  3. DATA
  4. RCPT
  5. QUIT
Question 2 Multiple Choice (Single Answer)

Which of the following fields in Management Information Base (MIB) is optional and can be used to include a text string referencing some other document?

  1. DESCRIPTION
  2. REFERENCE
  3. STATUS
  4. INDEX
  5. UNITS
Question 3 Multiple Choice (Single Answer)

Which of the following characters in TCP window principle applied to TCP refers to the bytes that are sent but not yet acknowledged?

  1. C
  2. D
  3. A
  4. B
  5. X
Question 4 Multiple Choice (Single Answer)

Which of the following states in Internet Message Access Protocol (IMAP4) states that the client has identified itself to the server and must select a mailbox to proceed?

  1. Non-authenticated
  2. Authenticated
  3. Selected
  4. Logout
  5. Action
Question 5 Multiple Choice (Single Answer)

Which of the following intertwined algorithms of TCP avoids having TCP wait for a timeout to resend lost segments?

  1. Fast recovery
  2. Fast retransmit
  3. Congestion avoidance
  4. Slow start
  5. Fast start
Question 6 Multiple Choice (Single Answer)

Which of the following POP3 commands retrieves the number and total size of messages currently in the mailbox?

  1. LIST
  2. AUTH
  3. STAT
  4. USER
  5. QUIT
Question 7 Multiple Choice (Single Answer)

Which of the following addresses in BOOTP message format is set by the client and is used by the server to identify the address of the client sending a BOOTREPLY?

  1. Router IP
  2. Server IP
  3. Client Hardware
  4. Flag fields
  5. H/W type
Question 8 Multiple Choice (Single Answer)

Which of the following HTTP message requests is sent from a client to a server and includes the method to be applied to the resource, the identifier of the source and the protocol version in use?

  1. Response
  2. Request
  3. Entity
  4. PUT
  5. OPTIONS
Question 9 Multiple Choice (Single Answer)

Which of the following fields in SNMP message format consists of an integer that indicates the object which caused the error reported by the errorStatus?

  1. Community
  2. noSuchName
  3. readOnly
  4. Error Index
  5. VarBind
Question 10 Multiple Choice (Single Answer)

Which of the following flag message attributes in IMAP4 is used to indicate that the message is marked for special attention?

  1. Answered
  2. Flagged
  3. Deleted
  4. Recent
  5. Seen
Question 11 Multiple Choice (Single Answer)

Which of the following status response commands of IMAP4 server provides an error message from the server?

  1. NO
  2. OK
  3. BAD
  4. PREAUTH
  5. BYE
Question 12 Multiple Choice (Single Answer)

Which of the following authentication state commands of IMAP4 returns a list of all mailboxes on the subscription list that conform to name?

  1. LIST
  2. EXAMINE
  3. UNSUBSCRIBE
  4. STATUS
  5. LSUB
Question 13 Multiple Choice (Single Answer)

Which of the following routings in IP datagram provides a means for the source of an IP datagram to supply explicit routing information?

  1. Strict source
  2. Loose source
  3. Record
  4. Internet time stamp
  5. Pointer
Question 14 Multiple Choice (Single Answer)

Which of the following components in ICMP message format is used to detect if there is another active host in the network?

  1. Destination unreachable
  2. Checksum
  3. Echo
  4. Code
  5. Data
Question 15 Multiple Choice (Single Answer)

Which of the following fields in DHCP message format is set by the client to 0 and is incremented by a router that relays the request to another server and is used to identify loops?

  1. Transaction ID
  2. Hops
  3. Length
  4. Client IP address
  5. Router IP address
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