Which of the following is widely used inside the telephone system for longhaul data traffic ? (A) ISDN (B) ATM (C) Frame Relay (D) ISTN

Which of the following is widely used inside the telephone system for longhaul data traffic ? (A) ISDN (B) ATM (C) Frame Relay (D) ISTN
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Answer :

(B) ATM
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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

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Last Answer : d. All the above

______ eliminates the varying delay times associated withdifferent-size packets. A) X.25 B) Frame Relay C) ATM D) all of theabove

Description : ______ eliminates the varying delay times associated withdifferent-size packets. A) X.25 B) Frame Relay C) ATM D) all of theabove

Last Answer : ATM

______ is the cell relay protocol designed by the corresponding Forum and adopted by the ITU-T. A) X.25 B) Frame Relay C) ATM D) none of the above

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Last Answer : ATM

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Last Answer : Frame Relay

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Last Answer : (C) The AES (Advanced Encryption Standard) cryptosystem allows variable key lengths of size 56 bits and 124 bits.

The ............layer of OSI model can use the trailer of the frame for error detection. A) Physical B) Data link C) Transport D) Presentation

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Last Answer : D) Frame

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Last Answer : (B) Piggy backing

Frame Relay has_______. A) only the physical layer B) only thedata link C) the physical and data link layers D) the physical, data link, andnetwork layers

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Last Answer : (A) Telephone, ATM

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Last Answer : B. 64 kbps

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Description : What is the data rate of the ISDN Basic access B channel? A. 192 kbps B. 32 kbps C. 64 kbps D. 144 kbps

Last Answer : C. 64 kbps

State weather the following statement is true or false for ISDN – Integrated Services Digital Network ISDN is an effort to standardize subscriber services, provide user/network interfaces 2). the goal of ISDN is to form a Local area network that provides Peer-to-Peer connectivity over digital media 3). It is a set of protocols that combines digital telephony and data transport services A. 1. True, 2. false, 3. true B. 1. true, 2. false, 3. false C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

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Broad Band ISDN handles data rate of about (A) 64 kbps (B) 100 mbps (C) 5.4 mbps (D) 2.048 mbps

Description : Broad Band ISDN handles data rate of about (A) 64 kbps (B) 100 mbps (C) 5.4 mbps (D) 2.048 mbps

Last Answer : (A) 64 kbps

ISDN handles data pertaining to (A) All digital services (B) Speech and Video (C) Computer data only (D) Speech only

Description : ISDN handles data pertaining to (A) All digital services (B) Speech and Video (C) Computer data only (D) Speech only

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In a demand paging memory system, page table is held in registers. The time taken to service a page fault is 8 m.sec. if an empty frame is available or if the replaced page is not modified, and it takes 20 m.secs., if the replaced page is modified. What is the average access time to service a page fault assuming that the page to be replaced is modified 70% of the time ? (A) 11.6 m.sec. (B) 16.4 m.sec. (C) 28 m.sec. (D) 14 m.sec.

Description : In a demand paging memory system, page table is held in registers. The time taken to service a page fault is 8 m.sec. if an empty frame is available or if the replaced page is not modified, and it takes 20 m.secs., if the replaced ... ? (A) 11.6 m.sec. (B) 16.4 m.sec. (C) 28 m.sec. (D) 14 m.sec.

Last Answer : (B) 16.4 m.sec. 

In ATM, the ______ layerprovides routing, traffic management, switching, and multiplexing services. A) physical B) ATM C) AAL D) none of the above

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When a mobile telephone physically moves from one to another cell, the base station transfers ownership to the cell getting strongest signal. This process is known as................. (A) handoff (B) mobile switching (C) mobile routing (D) cell switching

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Last Answer : (A) handoff 

An actor in an animation is a small program invoked ............... per frame to determine the characteristics of some object in the animation. (A) once (B) twice (C) 30 times (D) 60 times

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A network with bandwidth of 10 Mbps can pass only an average of 15,000 frames per minute with each frame carrying an average of 8,000 bits. What is the throughput of this network ? (A) 2 Mbps (B) 60 Mbps (C) 120 Mbps (D) 10 Mbps

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Last Answer : (A) 2 Mbps Explanation: In data transmission, throughput is the amount of data moved successfully from one place to another in a given period of time, and typically measured in bits per second (bps), ... second (Mbps) or gigabits per second (Gbps). Here, Throughput = 15000 x 8000/60 = 2 Mbps 

A network with bandwidth of 10 Mbps can pass only an average of 12,000 frames per minute with each frame carrying an average of 10,000 bits. What is the throughput of this network ? (A) 1 Mbps (B) 2 Mbps (C) 10 Mbps (D) 12 Mbps

Description : A network with bandwidth of 10 Mbps can pass only an average of 12,000 frames per minute with each frame carrying an average of 10,000 bits. What is the throughput of this network ? (A) 1 Mbps (B) 2 Mbps (C) 10 Mbps (D) 12 Mbps

Last Answer : (B) 2 Mbps

………………….. is used to carry traffic of one protocol over network that does not support that protocol directly. A) Tunneling B) Transferring C) Trafficking D) Switching

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………………….. is a collective term for a number of Ethernet Standards that carry traffic at the nominal rate of 1000 Mbit/s against the original Ethernet speed of 10 Mbit/s. A) Ethernet B) Fast Ethernet C) Gigabit Ethernet D) All of the above

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............ is a collective term for a number of Ethernet Standards that carry traffic at the nominal rate of 1000 Mbits/s against the original Ethernet speed of 10 Mbit/s. A) Ethernet B) Fast Ethernet C) Gigabit Ethernet D) All of the above

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Description : Which of the communication modes support two way traffic but in only once direction of a time? A) Simplex B) Half-duplex C) Three - quarter's duplex D) Full duplex

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State true or false for Java Program. i) Data members of an interface are by default final ii) An abstract class has implementations of all methods defined inside it. A) i-false, ii-false B) i-false, ii-true C) i-true, ii-false D) i-true, ii-true

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………… enable us to hide, inside the object, both the data fields and the methods that act on that data. A) Encapsulation B) Polymorphism C) Inheritance D) Overloading

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- MAC is to Ethernet what ________ is to Frame Relay. A. DLCI B. LCI C. PVC D. None of the above

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Frame Relay networks offer an optioncalled ______________that sends voice through the network. A) VOFR B) FRAD C) MUX D) none of the above

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To handleframesarrivingfrom other protocols, Frame Relay uses adevice calleda _________. A) VOFR B) FRAD C) MUX D) none of the above

Description : To handleframesarrivingfrom other protocols, Frame Relay uses adevice calleda _________. A) VOFR B) FRAD C) MUX D) none of the above

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In Frame Relay, the EA field defines thenumber of bytes; it is _____ in the last byte of the address. A) 0 B) 1 C) 2 D) 3

Description : In Frame Relay, the EA field defines thenumber of bytes; it is _____ in the last byte of the address. A) 0 B) 1 C) 2 D) 3

Last Answer : 1

In Frame Relay, an address can be________ bytes. A) only 2 B) 2 to 3 C) 2 to 4 D) none of the above

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Last Answer : 2 to 4

In Frame Relay, when. ______ is selected, it requires establishing andterminatingphases A) a PVC B) an SVC C) either (a) or (b) D) neither (a) nor (b)

Description : In Frame Relay, when. ______ is selected, it requires establishing andterminatingphases A) a PVC B) an SVC C) either (a) or (b) D) neither (a) nor (b)

Last Answer : an SVC

In Frame Relay, when a _____ is selected, the correspondingtable entry is recorded for all switches by the administrator A) PVC B) SVC C) either (a) or (b) D) neither (a) nor (b)

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Last Answer : PVC

VCIs in Frame Relay arecalled ______. A) PVC B) SVC C) DLCIs D) none of the above

Description : VCIs in Frame Relay arecalled ______. A) PVC B) SVC C) DLCIs D) none of the above

Last Answer : DLCIs

Frame Relay provides ________. A) PVCs B) SVCs C) either (a) or (b) D) neither (a) nor (b)

Description : Frame Relay provides ________. A) PVCs B) SVCs C) either (a) or (b) D) neither (a) nor (b)

Last Answer : Frame Relay

Telephone Traffic is measured in (A) Seconds. (B) Hours. (C) Erlang (D) Pulses per minute.

Description : Telephone Traffic is measured in (A) Seconds. (B) Hours. (C) Erlang (D) Pulses per minute.

Last Answer : (C) Erlang

What is the full form of 'ISDN' ? -How To ?

Description : What is the full form of 'ISDN' ? -How To ?

Last Answer : The full form of 'ISDN' is Integrated Services Digital Network

What is the full form of ISDN ?

Last Answer : ISDN - Integrated Services Digital Network

These are used to connect non-ISDN equipment ot ISDN line. A. Digipeaters B. Terminal adapters C. Local repeaters D. Terminal repeaters

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Last Answer : B. Terminal adapters

What equation defines the composition of an ISDN basic access line? A. B+2D B. B+D C. 2B+2D D. 2B+D

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Last Answer : D. 2B+D

What do you mean by numbering and addressing? Draw the ISDN address structure and explain how the addressing works?

Description : What do you mean by numbering and addressing? Draw the ISDN address structure and explain how the addressing works?

Last Answer :  Numbering and Addressing: In telephone and data networks, the end equipments are more often single units than multiple devices units like PABX or LAN. Historically, a telephone, a computer, or a ... as reference point may also be addressed by using direct inward dialing (DID) feature.  

Explain the working of broad band ISDN.

Description : Explain the working of broad band ISDN.

Last Answer :  BISDN Configuration: Fig. shows how access to the BISDN network is accomplished. Each peripheral device is interfaced to the access node of a BISDN network through a broadband distant ... consequently, have higher transmission rates and offer more channel handling capacity than ISDN systems.  

In computing, what does ISDN stand for?

Description : In computing, what does ISDN stand for?

Last Answer : Integrated Services Digital Network

The ISDN channel D designates _____ which contains control information

Description : The ISDN channel D designates _____ which contains control information

Last Answer : Data

ISDN stands for

Description : ISDN stands for

Last Answer : Integrated Services Digital Network