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Advanced Data Communication (CBSE (UGC) NET)

Description: ADC
Number of Questions: 15
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Tags: Computer Networks Networking Data Communication Computers
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Which of the following protocols in data communication serves as a supplement to IP and informs the sender about any accident that occurs to its packets?

  1. HTTP

  2. ICMP

  3. TCP

  4. UDP

  5. HTML


Correct Option: B
Explanation:

This protocol in data communication serves as a supplement to IP and informs the sender about any accident that occurs to its packets.

Which of the following fields in IPv4 is a 13-bit field that specifies the offset of the data field of this packet from the starting point of the data field of the fragmented source packet?

  1. Header checksum

  2. Protocols

  3. TTL

  4. Fragmentation offset

  5. Flags


Correct Option: D
Explanation:

This field in IPv4 is a 13-bit field that specifies the offset of the data field of this packet from the starting point of the data field of the fragmented source packet.

Which of the following fields in Link Access Procedure (LAP) frame format is a variable size field with a maximum of 260 octets comprising upper layer information (the size of the field is system dependent)?

  1. Frame check sequence

  2. Information

  3. Flag

  4. Address

  5. Control


Correct Option: B
Explanation:

This field in Link Access Procedure (LAP) frame format is a variable size field with a maximum of 260 octets comprising upper layer information and the size of the field is system dependent.

Which of the following protocols was introduced to implement group communication on the transport layer that is also referred to as a communication group 'web'?

  1. MBone

  2. RTP

  3. MTP

  4. SRTP

  5. HTTP


Correct Option: C
Explanation:

This protocol was introduced to implement group communication on the transport layer that is also referred to as a communication group 'web'.

Which of the following fields in ATM cell header is carried in the final octet of the header and provides an eight-bit cyclic redundancy check remainder that covers the entire header?

  1. Generic Flow Control

  2. Cell Loss Priority

  3. Header Error Control

  4. Virtual Path Identifier

  5. Payload Type Indicator


Correct Option: C
Explanation:

This field in ATM cell header is carried in the final octet of the header and provides an eight-bit cyclic redundancy check remainder that covers the entire header.

Which of the following fields in Real Time Transport (RTP) header format is a single bit field whose value depends on the payload that follows it?

  1. Padding

  2. Extension bit

  3. CSRC count

  4. Marker

  5. Sequence number


Correct Option: D
Explanation:

This field in Real Time Transport (RTP) header format is a single bit field whose value depends on the payload that follows it. It marks significant events such as frame boundaries in the packet stream.

Which of the following is the traffic supported by Resource Reservation Protocol (RSVP) that assures guaranteed rate at the cost of time and is not meant to be implemented over a circuit switched network?

  1. Best effort traffic

  2. Rate sensitive traffic

  3. Delay sensitive traffic

  4. Heavy traffic

  5. Slow traffic


Correct Option: B
Explanation:

This traffic supported by Resource Reservation Protocol (RSVP) is the one that assures guaranteed rate at the cost of time and it is not meant to be implemented over a circuit switched network.

Which of the following is a message type supported by RSVP in which the removal of the path and reservation state is done without waiting for the cleanup timeout period?

  1. Path-teardown message

  2. Reservation-request teardown message

  3. Teardown message

  4. Path message

  5. Reservation-request message


Correct Option: C
Explanation:

This is a message type supported by RSVP. The removal of the path and reservation state is done in this message type without waiting for the cleanup timeout period.

In which of the following fields in ATM cell header format (when set to 0) is the cell high priority and interim switches must make every effort to forward the cell successfully?

  1. GFC

  2. CLP

  3. VPI

  4. PTI

  5. HEC


Correct Option: B
Explanation:

CLP refers to Cell Loss Priority. It is a field in ATM cell header format in which (when set to 0) the cell is high priority and interim switches must make every effort to forward the cell successfully.

Which of the following identifiers in MTP packet format is used together with the multicast Network Service Access Points (NSAP) to form the destination transport service access point of all packets multicast to the entire web?

  1. Unknown connection identifier

  2. Multicast connection identifier

  3. Unicast identifier

  4. Master

  5. Producer


Correct Option: B
Explanation:

This identifier in MTP packet format is used together with the multicast Network Service Access Points (NSAP) to form the destination transport service access point of all packets multicast to the entire web.

Which of the following types of bit-rate in non-real time services is used for connections that transport variable bit rate traffic for which there is no reliance on time synchronisation between the traffic source and destination?

  1. nrt-VBR

  2. ABR

  3. UBR

  4. GFR

  5. CBR


Correct Option: A
Explanation:

nrt-VBR refers to non-real time variable bit rate. It is a type of bit-rate in non-real time services and is used for connections that transport variable bit rate traffic for which there is no reliance on time synchronisation between the traffic source and destination.

Which of the following is a type of functional group in network management problem which consists of configuring network elements as well as the network as a whole?

  1. Fault management

  2. Performance management

  3. Security management

  4. Configuration management

  5. Accounting management


Correct Option: D
Explanation:

This is a type of functional group in network management problem which consists of configuring network elements as well as the network as a whole.

Which of the following is a group of Quality of Services in network characteristics which is the ratio between the time period in which the system or service retains usability and the overall time of system life?

  1. Security

  2. Performance

  3. Availability

  4. Reliability

  5. Provider-only


Correct Option: C
Explanation:

This is a group of Quality of Services in network characteristics which is the ratio between the time period in which the system or service retains usability and the overall time of system life.

Which of the following fields of SNMP message format is the list of numeric object names whose values are requested by a manager and the list contains the combination of type, length and value?

  1. Version

  2. Community string

  3. Request ID

  4. ErrorStatus

  5. VarBindList


Correct Option: E
Explanation:

This field of SNMP message format is the list of numeric object names whose values are requested by a manager and the list contains the combination of type, length and value.

Which of the following algorithms in Queue Management Algorithms is very popular in areas like multitasking operating systems where certain applications must have priority over others?

  1. FIFO

  2. Priority

  3. Weighted queuing

  4. Hybrid algorithm

  5. Pop


Correct Option: B
Explanation:

This algorithm in Queue Management Algorithms is very popular in areas like multitasking operating systems where certain applications must have priority over others.

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