Description : The performance of data communications network depends on .............. A) Number of users B) The hardware and software C) The transmission D) All of the above
Last Answer : D) All of the above
Description : What satellite subsystem monitors onboard conditions such as temperature and battery voltage and transmits this data back to a ground station for analysis? A. Communications subsystem B. AKM C. TTC D. Transponder
Last Answer : C. TTC
Description : Which command does not show that two devices are failing to route packets between them successfully? A. show interface B. trace C. telnet D. ping
Last Answer : show interface
Description : Which of the following are ways to provide login access to a router? (choose all that apply) A. HTTP B. Aux Port C. Console D. LLC E. Telnet F.
Last Answer : Aux Port
Description : If you want to connect toyour owncomputer throughthe Internet from another location, you can use– (A) e-mail (B) FTP (C) instant message (D) Telnet (E) None of these
Last Answer : Telnet
Description : Which of the following applications allows a user to access and change remote files without actual transfer? A) DNS B) FTP C) NFS D) Telnet
Last Answer : C) NFS
Description : The name of the protocol which provides virtual terminal in TCP/IP model is. A) Telnet B) SMTP C) HTTP
Last Answer : A) Telnet
Description : Which of the following protocol is used for transferring electronic mail messages from one machine to another? a. TELNET b. FTP c. SNMP d. SMTP
Last Answer : d. SMTP
Description : In one of the pairs of protocols given below, both the protocols can use multiple TCP connections between the same client and the server. Which one is that? a. HTTP, FTP b. HTTP, TELNET c. FTP, SMTP d. HTTP, SMTP
Last Answer : a. HTTP, FTP
Description : Which one of the following allows a user at one site to establish a connection to another site and then pass keystrokes from local host to remote host? a.HTTP b.FTP c.Telnet d.TCP
Last Answer : c.Telnet
Description : TELNET, FTP, SMTP, Protocols fall in the following layer of OSI reference model? a. Transport layer b. Internet layer c. Network layer d. Application layer
Last Answer : d. Application layer
Description : Which one of the following uses UDP as the transport protocol? a. HTTP b. Telnet c. DNS d. SMTP
Last Answer : c. DNS
Description : . The newer technique uses a distributed database system called ………………….. to translate names to addresses. A. DNS B. IP C. ARP D. Telnet
Last Answer : A. DNS
Description : Explain about telnet.
Last Answer : Remote terminal protocol. It allows to interact with a remote system as if terminal is directly connected to that machine. - working procedure - applications
Description : Which of the following is required to communicate between two computers? a. communications software b. protocol c. communication hardware d. all of above including access to transmission medium
Last Answer : all of above including access to transmission medium
Description : Weed move from its origin to new environ ment is called a). Introduced weed b). Alien weed c). Antrophytes d). All of these
Last Answer : b). Alien weed
Description : An example of a medium speed, switched communications service is a. series 1000 b. data phone 50 c. DDD d. All of the above
Last Answer : DDD
Description : Most data communications involving telegraph lines use: a. simplex lines b. wideband channel c. narrowband channel d. dialed service
Last Answer : narrowband channel
Description : ______ cable is used for voice and data communications. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Twisted-pair
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 : The information tobe communicated ina data communications system is the_______. A) Medium B) Protocol C) Message D) Transmission
Last Answer : Message
Description : When data moves from one set of major connections to another on theInternet, we call theseconnections the Internet _____. A) Pathway B) Backbone C) Communications system D) Routers
Last Answer : Backbone
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 : State weather the following statement is true or false for Point-to-Point Protocol 1). It is still in widespread use for dial-up TCP/IP connections 2) Point-to-point circuits in the form of asynchronous lines have long been ... . false C. 1. false, 2. false, 3. false D. 1. true, 2. false, 3. true
Last Answer : D. 1. true, 2. false, 3. true
Description : ……….cable is used for voice and data communications. a. Twisted-pair b. None of These c. Coaxial d. Fiber-optic
Last Answer : a. Twisted-pair
Description : The satellite subsystem that monitors and controls the satellite is the A. propulsion subsystem B. power subsystem C. communications subsystem D. telemetry, tracking, and command subsystem
Last Answer : D. telemetry, tracking, and command subsystem
Description : In ________,a station monitors the medium after it sends a frame to see if the transmission was successful. If so, the station is finished. If, however, there is a collision, the frameis sentagain. A) CSMA/CA B) CSMA/CD C) either (a)or (b) D) both (a) and (b)
Last Answer : CSMA/CD
Description : When using a function point estimation worksheet, there are 14 factors that impact the complexity of a project. These factors include _____. a. data communications, time tradeoffs, and ... programming language d. reports printed and PCA e. x-rays, extensibility, and operational conversion
Last Answer : b. end-user efficiency, data communications, and reusability
Description : Which of the following communications lines is best suited to interactive processing applications? a. narrow band channel b. simplex lines c. full duplex lines d. mixed band channels
Last Answer : full duplex lines
Description : A communications device that combines transmissions from several I/O devices into one line is a a. concentrator b. modifier c. multiplexer d. full-duplex line
Last Answer : multiplexer
Description : Which of the following might be used by a company to satisfy its growing communications needs? a. front end processor b. multiplexer c. controller d. concentrator e. all of the above
Last Answer : all of the above
Description : ________ are usedfor short-range communications such as those between a PC and aperipheral device. A) Radio waves B) Microwaves C) Infrared waves D) none of the above
Last Answer : Infrared waves
Description : _____ are used for cellular phone, satellite,and wireless LAN communications. A) Radio waves B) Microwaves C) Infrared waves D) none of the above
Last Answer : Microwaves
Description : Which of the following primarily uses guided media? A) cellular telephone system B) local telephone system C) satellite communications D) radio broadcasting
Last Answer : local telephone system
Description : The Federal Communications Commission (FCC) allows ______ kHz for each FM station. A) 20 B) 100 C) 200 D) none of the above
Last Answer : 100
Description : The Federal Communications Commission (FCC) allows ______kHz for each AM station. A) 5 B) 10 C) 20 D) none of the above
Last Answer : 0
Description : Which organization has authority over interstate andinternational commerce in the communications field? A) ITU-T B) IEEE C) FCC D) ISOC
Last Answer : FCC
Description : MCI and AT&T are examples of whichof the following? A) Social networks B) Communications systems C) Internet service providers D) Mobisodes
Last Answer : Internet service providers
Description : Which of the following is required to communicatebetween two computers? A. communications software B. protocol C. communicationshardware D. access to transmission medium E. All of theabov
Last Answer : All of theabov
Description : How many bits internet address isassigned to eachhost on a TCP/IP internet which is used in all communications withthehost? A. 16 - bits B. 32 - bits C. 48 - bits D. 64 - bits E. None of the above
Last Answer : 32 - bits
Description : A front-end processor is A. a user computer system B. a processor in a large-scale computer that executes operatingsystem instructions C. a minicomputer that relieves main-frame computersat a ... centre of communications control functions D. preliminary processor ofbatch jobs. E. None of the above
Last Answer : a minicomputer that relieves main-frame computersat a computer centre of communications control functions
Description : …….are used for short-range communications such as those between a PC and aperipheral device. a. Radio waves b. None of These c. Microwaves d. Infrared waves
Last Answer : d. Infrared waves
Description : ……………are used for cellular phone, satellite, and wireless LAN communications. a. Microwaves b. Radio waves c. None of these d. Infrared waves
Last Answer : a. Microwaves
Description : Goals for the design of thelogical schema include A. avoiding data inconsistency B. being ableto construct queries easily C. being ableto access data efficiently D. All of theabove E. None of the above
Last Answer : All of theabove
Description : The functionalities of the presentation layer include ____________ a. Data compression b. Data encryption c. Data description d. All of the mentioned
Last Answer : d. All of the mentioned
Description : The functionalities of the presentation layer include ____________ a) Data compression b) Data encryption c) Data description d) All of the mentioned
Last Answer : d) All of the mentioned
Description : ASA standard monitors include all except A. Pulse oximeter B. CVP C. NIBP cuff D. ECG
Last Answer : Ans: B
Description : 34. The nurse monitors for signs of peritonitis, a potential complication postoperatively. The manifestations include the following except
Last Answer : D. Soft abdomen