Description : The correctness and accuracy of the transmitted message content is A. verified by the modem B. communications system C. determined by the sender and receiver D. ensured by use of digital technique
Last Answer : C. determined by the sender and receiver
Description : In a star-topology Ethernet LAN, _______ is just a point where the signals coming from different stations collide; it is the collision point.
Last Answer : a passive hub
Description : Communication will be effective if: (a) It is delivered slowly and clearly (b) It is delivered in a calm situation (c) It reaches the receiver completely (d) It reaches the receiver as intended by the sender
Last Answer : d) It reaches the receiver as intended by the sender
Description : Packets which is self – contained and travels through the network independent of other packets of the same message by whatever means available
Last Answer : Datagram
Description : What circuit in the TV receiver is used to develop the high voltage needed to operate the picture tube?
Last Answer : Horizontal output
Description : The sound IF in a TV receiver is
Last Answer : 41.25 MHz
Description : It is the ratio of the largest possible magnitude to the smallest possible magnitude that can be decoded by the digital-to-analog converter in the receiver.
Last Answer : Dynamic range
Description : Involves compression in the transmitter after the input sample has been converted to a linear PCM code and then expansion in the receiver prior to PCM coding:
Last Answer : Digital companding
Description : To a conventional narrowband receiver, a spread spectrum signal appears to be
Last Answer : Noise
Description : In PAM demultiplexing, the receiver clock is derived from
Last Answer : the PAM signal itself
Description : In a radio receiver with simple AGC:
Last Answer : an increase in signal strength produces more AGC
Description : In a TV receiver the raster is normal but there is no sound and quality of picture is poor. The defective part is
Last Answer : AGC, video IF amplifier, RF amplifier
Description : The suitable medium to establish commonness between sender and receiver of message
Last Answer : Ans. Communication
Description : What are the basic elements of communication? (a) Sender and receiver (b) Message and channel of communication (c) Response and feedback (d) All of the above
Last Answer : (d) All of the above
Description : An FDM hierarchy which is formed by frequency – division multiplexing 10 super groups together for a combined capacity of 600 voice band message channels.
Last Answer : Mastergroup
Description : It is used to encode the minimum amount of speech information necessary to reproduce a perceptible message with a fewer bits that those needed by a conventional encoder/decoder
Last Answer : vocoders
Description : The characters making up the message in a synchronous transmission are collectively referred to as the data
Last Answer : block
Description : A(n) ________function creates a message digest out of a message.
Last Answer : hash
Description : I am a 10 letter word. The first 2 words verifies a word that means 'myself.' The last 8 words verifies that you can complete it. The first 5 words can be used for the word, 'imposter.' the last 3 words can be used for the word 'bible.' What word am I? -Riddles
Last Answer : Impossible ;).
Description : WHAT DOES IMPOSTER MEANS IN AMONG US? -Gaming
Last Answer : answer:
Description : _______ refers to the structure or format of the data, meaning the order in which they are presented.
Last Answer : Semantics
Description : The process of decaying from one energy level to another energy level is called _______
Last Answer : Spontaneous emission
Description : _______ is a standard developed by ANSI for fiber-optic networks.
Last Answer : SONET
Description : A _______ is a three-layer device that handles packets based on their logical addresses
Last Answer : router
Description : A _______ is a connecting device that operates in the physical and data link layers of the Internet model.
Last Answer : bridge
Description : A repeater is a connecting device that operates in the _______ layer of the Internet model.
Last Answer : physical
Description : Bluetooth is a _______ technology that connects devices (called gadgets) in a small area
Last Answer : Wireless LAN
Description : IEEE has defined the specifications for a wireless LAN, called _______, which covers the physical and data link layers.
Last Answer : . IEEE 802.11
Description : In IPv6, when a datagram needs to be discarded in a congested network, the decision is based on the _______ field in the base header.
Last Answer : priority
Description : Congestion in a network or internetwork occurs because routers and switches have _______
Last Answer : queues
Description : TELNET is an abbreviation for _______
Last Answer : Terminal Network
Description : _______ is the cell relay protocol designed by the corresponding Forum and adopted by the ITU-T.
Last Answer : ATM
Description : The word "Base" in 10BaseT means
Last Answer : the cable carries baseband signals
Description : means to prove the identity of the entity that tries to access the system's resources.
Last Answer : Entity authentication
Description : A postcard can not have attachment of a) Gummed label bearing name & address of the addressee, a gummed label bearing name and addressed of the sender b) Of an addl paper/card attched c) Drawing /photograph on thin paper adherent to the card d) Another post card intended for a reply card
Last Answer : b) Of an addl paper/card attched
Description : Codes must be A. agreed upon in advance between sender and receiver B. eight bit per character C. the same in all modern computer D. either seven or eighth bits per character
Last Answer : A. agreed upon in advance between sender and receiver
Description : ECE Board Exam March 1996 Communications code is ____________. A. eight bits per character B. agreed upon in advance between sender and receiver C. the same in all modern computers D. either seven or eight bits per character
Last Answer : B. agreed upon in advance between sender and receiver
Description : Who should take the most responsibility for clear and effective communication? A. The Communications Manager B. The sender and the receiver C. The sender D. The receiver
Last Answer : B. The sender and the receiver
Description : Inthe _____ Protocol, the sender sends one frame, stops until it receives confirmation from the receiver, and then sends the next frame. A) Stop-and-Wait B) Simplest C) Go-Back-N ARQ D) Selective-Repeat ARQ
Last Answer : Stop-and-Wait
Description : Inthe _____ Protocol, the sender sends its frames oneafter another with noregard to the receiver. A) Stop-and-Wait B) Simplest C) Go-Back-N ARQ D) Selective-Repeat ARQ
Last Answer : Stop-and-Wait B) Simplest
Description : The term 'duplex' refers to theability of the data receiving stations toecho back aconfirming messageto the sender. Infull duplex data transmission, both the sender and the receiver A. cannot talk at once B. can ... data one ata time D. can do one way data transmission only E. None of the above
Last Answer : can do one way data transmission only
Description : Which of the following statement is False about the efficiency of the given channel? a. If we want to send big packets on the channel, then Stop and Wait is good choice. b. If length ... is directly proportional to efficiency of channel. d. Efficient might be less if capacity of channel is high
Last Answer : Distance between sender and receiver is directly proportional to efficiency of channel.
Description : A sender uses the Stop-and-Wait ARQ protocol for reliable transmission of frames. Frames are of size 1000 bytes and the transmission rate at the sender is 80 Kbps (1Kbps = 1000 bits/second). Size of ... is lost, the sender throughput is __________ bytes/second. a. 2500 b. 2000 c. 1500 d. 500
Last Answer : a. 2500
Description : Which feature of Go Back N ARQ mechanism possesses an ability to assign the sliding window in the forward direction? a. Control Variables b. Sender Sliding Window c. Receiver Sliding Window d. Resending of frames
Last Answer : b. Sender Sliding Window
Description : The Post Office Protocol is an ………... protocol with both client (sender/receiver) and …………...functions A. electronic mail, server (storage) B. three layer , server C. UDP, transfer D. TCP, server
Last Answer : A. electronic mail, server (storage)
Description : Which feature of Go-Back-N ARQ mechanism possesses an ability to assign the sliding window in the forward diretion? A. Control Variables B. Sender Sliding Window C. Receiver Sliding Window D. Resending of frames
Last Answer : B. Sender Sliding Window
Description : Symmetric - key cryptography refers to ______methods in which both the sender and receiver share the same key ( or , less commonly, in which their keys are different but related in an easily computable way): a) Encryption b) Decryption c) Both of above d) None of These
Last Answer : a) Encryption
Description : In the communication process, the receiver and sender are classified as A. communication functions B. communication parties C. communication tools D. communication channels
Last Answer : B. communication parties
Description : ____________communication process, receiver and sender are classified as A.functions B.parties C.tools D.channels Answer: B
Last Answer : B.parties