Description : _______ conversionis the process of changing one of the characteristics ofan analog signal basedon the informationin the digitaldata. A) Digital-to-analog B) Analog-to-analog C) Analog-to-digital D) Digital-to-digital
Last Answer : Digital-to-analog
Description : . In order to use arecord management system A. You needto understand thelow-level details of how informationin stored B. You needto understand the model the record management system uses. C. Both (a)and (b) D. All of theabove E. None of the above
Last Answer : You needto understand the model the record management system uses.
Description : A(n)_________ signal is a composite analogsignal with an infinite bandwidth. A) digital B) analog C) either (a)or (b) D) neither (a) nor (b
Last Answer : digital
Description : ______ refers totwo characteristics: when data should be sent and how fast it can be sent. A) Semantics B) Syntax C) Timing D) none of the above
Last Answer : Timing
Description : _____ refers tothe structure or format of the data, meaning the order in which they are presented. A) Semantics B) Syntax C) Timing D) All of theabove
Last Answer : Syntax
Description : Transport layer is implemented in _________ a. End system b. NIC c. Ethernet d. Signal transmission
Last Answer : a. End system
Description : _____defines how a particular pattern to be interpreted,and whataction is tobe taken based on that interpretation. A) Semantics B) Syntax C) Timing D) None of the abov
Last Answer : Semantics
Description : In a synchronous modem, the digital-to-analog converter transmits signal to the a. equilizer b. modulator c. demodulator d. terminal e. none of aobve
Last Answer : equilizer
Description : ________conversion is therepresentation ofanalog information by an analog signal. A) Digital-to-analog B) Analog-to-analog C) Analog-to-digital D) Digital-to-digita
Last Answer : Analog-to-analog
Description : Indecodinga digital signal, the receiver calculates a running average of thereceived signal power, called the _______. A) baseline B) base C) line D) none of the above
Last Answer : baseline
Description : Bits can be sent over guided and unguided media as analog signal by ___________ a. digital modulation b. amplitude modulation c. frequency modulation d. phase modulation
Last Answer : a. digital modulation
Description : The signal which has infinitely many levels of intensity over a period of time is called ……… A. digital signal B. analog signal C. both a and b D. sound signal
Last Answer : A. digital signal
Description : Given a source code with 10 operators includes 6 unique operators, and 6 operand including 2 unique operands. The program volume is ? 48 120 720 insufficient data
Last Answer : 48
Description : Design phase includes? data, architectural and procedural design only architectural, procedural and interface design only data, architectural and interface design only data, architectural, interface and procedural design
Last Answer : data, architectural, interface and procedural design
Description : In the TCP/IP protocol architecture, the Network Access Layer includes ………………………………...layers of the OSI Reference Model. A. presentation, session, application B. physical, data link, network C. data link, network D. physical, data link
Last Answer : B. physical, data link, network
Description : Touse a cable network for data transmission, we needtwo keydevices:a ______ and a _________ A) CM; CMS B) CT; CMTS C) CM; CMTS D) none of the above
Last Answer : CM; CMS
Description : A _________ sine wave is not useful in data communications; we need to send a _______signal. A) composite; single-frequency B) single-frequency; composite C) single-frequency;double-frequency D) none of the above
Last Answer : single-frequency; composite
Description : In OSI model, when data is sent from device A to device B, the 5th layer to receive data at B is _________ a. Application layer b. Transport layer c. Link layer d. Session layer
Last Answer : d. Session layer
Description : Transport layer can identify the symptoms of overload nodes using _________ a. Flow control b. Traffic control c. Byte orientation d. Data integrity
Last Answer : b. Traffic control
Description : In IPv6, options are inserted between the _________ and the ___________ data A. base header; extension header B. base header; upper-layer data C. base header; frame header D. none of the above
Last Answer : B. base header; upper-layer data
Description : The data link layer takes the packets from _________ and encapsulates them into frames for transmission. a) network layer b) physical layer c) transport layer d) application layer
Last Answer : a) network layer
Description : In OSI model, when data is sent from device A to device B, the 5th layer to receive data at B is _________ a) Application layer b) Transport layer c) Link layer d) Session layer
Last Answer : d) Session layer
Description : The ______ technique expands the bandwidthof a signal by replacing each data bit with n bits. A) FDM B) DSSS C) FHSS D) TDM
Last Answer : DSSS
Description : In synchronous TDM, forn signal sources of the same data rate, eachframe contains _______ slots. A) n B) n + 1 C) n- 1 D) 0to n
Last Answer : n
Description : The _____schemeuses data patterns of size 2 and encodes the 2-bit patterns as one signal element belonging to a four-level signal. A) 4B5B B) 2B1Q C) MLT-3 D) none of the above
Last Answer : 2B1Q
Description : The data rate is sometimes calledthe ___ rate. A) baud B) bit C) signal D) none of the above
Last Answer : bit
Description : The ________ rate defines thenumber of dataelements sent in1s; the______ rate is the numberof signalelements sent in 1s. A) data; signal B) signal; data C) baud; bit D) none of the above
Last Answer : data; signal
Description : Carrier is A. One or more conductors that serve as a common connection for a related group of devices B. a continuous frequency capableof being modulated or impressed witha second signal C. ... that provides a data communications service among stations attached tothe network E. None of the above
Last Answer : a continuous frequency capableof being modulated or impressed witha second signa
Description : Contention is A. One or more conductors that serve as a common connection for a related group of devices B. a continuous frequency capableof being modulated or impressed witha second signal C. ... that provides a data communications service among stations attached tothe network E. None of the above
Last Answer : the condition whentwo or more stations attempt to use the same channel at the same time
Description : Consider a CSMA/CD network that transmits data at a rate of 100 Mbps (108 bits per second) over a 1 km (kilometre) cable with no repeaters. If the minimum frame size required for this network is 1250 bytes, what is the signal speed (km/sec) in the cable? a. 8000 b. 10000 c. 16000 d. 20000
Last Answer : d. 20000
Description : Determine the maximum length of the cable (in km) for transmitting data at a rate of 500 Mbps in an Ethernet LAN with frames of size 10,000 bits. Assume the signal speed in the cable to be 2,00,000 km/s. b. 2 c. 2.5 d. 5
Last Answer : b. 2
Description : A self-synchronized radar system obtains timing trigger pulses from what source?
Last Answer : Transmitter.
Description : DTP computer abbreviation usually means ? DeskTop Publishing Data Type Programming Digital Transmission Protocol None Of above
Last Answer : Data Type Programming
Description : Data from a computer are_______; the local loop handles _______ signals. A) analog; analog B) analog; digital C) digital; digital D) digital; analog
Last Answer : digital; analog
Description : _______ data have discretestates and take discrete values. A) Analog B) Digital C) (a) or (b) D) None of the above
Last Answer : Digital
Description : _____ data are continuousand take continuous values. A) analog B) digital C) (a) or (b) D) none of the above
Last Answer : analog
Description : Data canbe ________. A) analog B) digital C) (a) or (b) D) none of the above
Last Answer : (a) or (b)
Description : Modulation is theprocessof A. converting analogsignals todigital signals B. converting digital signals toanalog signals C. Multiplexing various signals intohigh speed line signals D. performing data encryption
Last Answer : converting digital signals toanalog signals
Description : Demodulation is aprocessof A. converting analog to digital signals B. converting digital to analogsignals C. multiplexing various signals intoone high speed line signals D. performing data description
Last Answer : converting analog to digital signals
Description : 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 ... C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false
Last Answer : A. 1. True, 2. false, 3. true
Description : Structured programming codes includes ? sequencing alteration iteration multiple exit from loops only A, B and C
Last Answer : only A, B and C
Description : To make SONET backward-compatible with the current hierarchy, its framedesign includes asystem of. A) OCs B) STMs C) STSs D) VTs
Last Answer : VTs
Description : A best-effort delivery service suchas IPv4 includes _______. A) error checking B) error correction C) datagram acknowledgment D) noneof the above
Last Answer : noneof the above
Description : The database administration function includes A. application programming B. computer operations management C. databaseaccessplanning D. All of theabove E. None of the above
Last Answer : databaseaccessplanning
Description : Which of the following statements is TRUE? a. Both Ethernet frame and IP packet include checksum fields b. Ethernet frame includes a checksum field and IP packet includes a CRC field c. Ethernet ... and IP packet includes a checksum field d. Both Ethernet frame and IP packet include CRC fields
Last Answer : Ethernet frame includes a CRC field and IP packet includes a checksum field
Description : A subset of a network that includes all the routers but contains no loops is called ________ a. spanning tree b. spider structure c. spider tree d. special tree
Last Answer : a. spanning tree
Description : The subset of a network that includes all the routers but contains no loops is called ________ A. spanning tree B. spider structure C. spider tree D. special tree
Last Answer : A. spanning tree
Description : One subset of a network that includes all the routers but contains no loops is called ________ A. spanning tree B. spider structure C. spider tree D. special tree
Description : In Bluetooth, multiple ________ form a network called a _________. A) scatternet; piconets B) piconets: scatternet C) piconets:bluenet D) bluenet; scatternet
Last Answer : piconets: scatternet