Explain about HDLC

Explain about HDLC
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1 Answer

Answer :

Station types:  
_ Primary station  
_ Secondary station  
 Configurations:  
_ Unbalanced configuration  
_ Symmetrical configuration  
_ Balanced configuration  
 Modes of communication:  
_ Normal Response Mode(NRM)  
_ Asynchronous Response Mode(ARM)  
_ Asynchronous Balanced Mode(ABM)  
 Frames :  
_ Flag field  
_ Address field  
_ Control field  
_ Information field  
_ FCS field
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Related questions

Which of the following statement is incorrect? a. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line b. HDLC is a standard synchronous communication protocol. c. RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW indicates that it is ready to accept data d. RTS/CTS is the way the terminal indicates ringing

Description : Which of the following statement is incorrect? a. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line b. HDLC is a standard ... indicates that it is ready to accept data d. RTS/CTS is the way the terminal indicates ringing

Last Answer : RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW indicates that it is ready to accept data

_____defines a protocol data unit (PDU) that is somewhat similar to that of HDLC. A) MAC B) LLC C) LLU D) none of the above

Description : _____defines a protocol data unit (PDU) that is somewhat similar to that of HDLC. A) MAC B) LLC C) LLU D) none of the above

Last Answer : LLC

HDLC isan acronym for _______. A) High-duplex line communication B) High-leveldata link control C) Half-duplex digital link combination D) Hostdouble-level circuit

Description : HDLC isan acronym for _______. A) High-duplex line communication B) High-leveldata link control C) Half-duplex digital link combination D) Hostdouble-level circuit

Last Answer : High-leveldata link control

High-level Data Link Control (HDLC) is a _______ protocol for communication over point-to-pointand multipoint links. A) bit-oriented B) byte-oriented C) character-oriented D) none of the above

Description : High-level Data Link Control (HDLC) is a _______ protocol for communication over point-to-pointand multipoint links. A) bit-oriented B) byte-oriented C) character-oriented D) none of the above

Last Answer : bit-oriented

Which type of Sframe in HDLC exhibit the correspondence of last three bits [N(R)] by defining the negative acknowledgement (NAK) number with the code value of '01'? a. Receive ready b. Receive not ready c. Reject d. Selective Reject

Description : Which type of Sframe in HDLC exhibit the correspondence of last three bits [N(R)] by defining the negative acknowledgement (NAK) number with the code value of '01'? a. Receive ready b. Receive not ready c. Reject d. Selective Reject

Last Answer : c. Reject

Which category of HDLC frames undergoes error and flow control mechanisms by comprising send and receive sequence numbers? a. Uframes b. Iframes c. Sframes d. All of the above

Description : Which category of HDLC frames undergoes error and flow control mechanisms by comprising send and receive sequence numbers? a. Uframes b. Iframes c. Sframes d. All of the above

Last Answer : Sframes

Which operational mode/s of HDLC support/s the balanced configuration by governing point to point link connectivity in addition to the primary as well as secondary functions performed by the station?a. NRM b. ABM c. Both a & b d. None of the above

Description : Which operational mode/s of HDLC support/s the balanced configuration by governing point to point link connectivity in addition to the primary as well as secondary functions performed by the station? a. NRM b. ABM c. Both a & b d. None of the above

Last Answer : b. ABM

Which of the following is the multiple access protocol for channel access control? a. CSMA/CD b. CSMA/CA c. Both CSMA/CD & CSMA/CA d. HDLC

Description : Which of the following is the multiple access protocol for channel access control? a. CSMA/CD b. CSMA/CA c. Both CSMA/CD & CSMA/CA d. HDLC

Last Answer : c. Both CSMA/CD & CSMA/CA

Which of the following is a data link protocol? a. ethernet b. point to point protocol c. hdlc d. all of the mentioned

Description : Which of the following is a data link protocol? a. ethernet b. point to point protocol c. hdlc d. all of the mentioned

Last Answer : d. all of the mentioned

Which protocols adopted the standards of HDLC (High Level Link Control) protocol? a. X.25 protocol as LAPB (Link Access Procedure Balanced, V.42 protocol as LAPM (Link Access Procedure for Modems) b. Frame Relay protocol as LAPF (Link Access Procedure for Frame Relay) c. ISDN (Integrated Services Digital Network) protocol as LAPD (Link Access Procedure on D channel) d. All the above

Description : Which protocols adopted the standards of HDLC (High Level Link Control) protocol? a. X.25 protocol as LAPB (Link Access Procedure Balanced, V.42 protocol as LAPM (Link Access Procedure for ... Services Digital Network) protocol as LAPD (Link Access Procedure on D channel) d. All the above

Last Answer : d. All the above

Choose the Protocols working in the Data Link Control Layer of OSI model below. a. ATM (Asynchronous Transfer Mode), Frame Relay b. HDLC (High Level Data Link Control), SDLC (Synchronous Data Link Control)c. ARP (Address Resolution Protocol), IEEE802.3 d. All the above

Description : Choose the Protocols working in the Data Link Control Layer of OSI model below. a. ATM (Asynchronous Transfer Mode), Frame Relay b. HDLC (High Level Data Link Control), SDLC (Synchronous Data Link Control) c. ARP (Address Resolution Protocol), IEEE802.3 d. All the above

Last Answer : d. All the above

………………...is a minimal protocol that allows isolated hosts to link via TCP/IP over the telephone network and ………………..uses a proposed international standard for transmitting HDLC over asynchronous lines. A. LCP, PPP B. PPP, LCP C. SLIP, PPP D. PPP, SLIP

Description : ………………...is a minimal protocol that allows isolated hosts to link via TCP/IP over the telephone network and ………………..uses a proposed international standard for transmitting HDLC over asynchronous lines. A. LCP, PPP B. PPP, LCP C. SLIP, PPP D. PPP, SLIP

Last Answer : C. SLIP, PPP

Data Link Control Protocol (HDLC) is implemented at the ……… A. Data link layer B. Network layer C. transport layer D. Physical layer

Description : Data Link Control Protocol (HDLC) is implemented at the ……… A. Data link layer B. Network layer C. transport layer D. Physical layer

Last Answer : A. receive sliding window.

Which of the following is the multiple access protocol for channel access control? A. CSMA/CD B. CSMA/CA C. Both CSMA/CD & CSMA/CA D. HDLC

Description : Which of the following is the multiple access protocol for channel access control? A. CSMA/CD B. CSMA/CA C. Both CSMA/CD & CSMA/CA D. HDLC

Last Answer : C. Both CSMA/CD & CSMA/CA

Changes in serum high density lipoproteins (HDL) are more truly reflected by those of (A) HDL-1 (B) HDL-2 (C) HDL-3 (D) HDLC

Description : Changes in serum high density lipoproteins (HDL) are more truly reflected by those of (A) HDL-1 (B) HDL-2 (C) HDL-3 (D) HDLC

Last Answer : Answer : B