Description : SONET defines _______ layers. A) two B) three C) four D) five
Last Answer : four
Description : Packet-switched networks can alsobe divided into ______subcategories: virtual-circuit networks and datagram networks A) four B) three C) two D) five
Last Answer : two
Description : In IEEE 802.11, the access method used in the PCF sublayer is ______. A) contention B) controlled C) polling D) none of the above
Last Answer : polling
Description : Data structure suitable for the application is discussed in ? data design architectural design procedural design interface design
Last Answer : data design
Description : The two basic types of record-access methods are a. Sequential and random b. Sequential and indexed c. Direct and immediate d. On-line and real time
Last Answer : Sequential and random
Description : In _______ methods,a stationcannot send unless it hasbeen authorized byother stations. A) random access B) controlledaccess C) channelization D) none of the above
Last Answer : controlledaccess
Description : In _______ methods, the stations consult one another tofind which station has the right to send. A) random access B) controlledaccess C) channelization D) none of the above
Description : In ___________ methods, no station is superior to another station and none is assigned the controlover another. A) random access B) controlledaccess C) channelization D) none of the above
Last Answer : random access
Description : Gigabit Ethernet access methods include _______ mode. A) half-duplex B) full-duplex C) both (a) and (b) D) neither (a) nor (b)
Last Answer : both (a) and (b)
Description : Magnetic disks are the most popular medium for a. Direct access b. Sequential access c. Both of above d. None of above
Last Answer : Both of above
Description : The most popular commercial DBMS. A) Microsoft SQL Server B) Microsoft Access C) MySQL D) Oracle
Last Answer : Oracle
Description : We have categorizedaccess methods into _______ groups. A) two B) three C) four D) five
Last Answer : three
Description : In modulo-2 arithmetic, we use only ______. A) 1and 2 B) 0and 2 C) 0and 1 D) none of the above
Last Answer : 0and 1
Description : In modulo-11 arithmetic, we use only the integers inthe range ______, inclusive. A) 1to 10 B) 1to 11 C) 0to 10 D) none of the above
Last Answer : 0to 10
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 : For a ______ channel, we need to use the Shannon capacity tofind the maximum bit rate. A) noisy B) noiseless C) bandpass D) low-pass
Last Answer : noisy
Description : The following is an example of what kind of paragraph You are now familiar with the health benefits of hobbies. You have taken an in-depth look at the specific benefits of reading as a hobby. We have discussed the adventurous nature of reading, in that..?
Last Answer : Concluding
Description : Traditionally, _____ methods of switching have been important. A) four B) three C) five D) six
Description : There arethree sampling methods: __________. A) quantized, sampled, and ideal B) ideal, sampled, andflat-top C) ideal, natural, and flat-top D) none of the above
Last Answer : ideal, natural, and flat-top
Description : Which of the following encoding methods does not provide for synchronization? A) NRZ-L B) RZ C) NRZ-I D) Manchester
Last Answer : NRZ-L
Description : Which model is popular for students small projects ? Waterfall Model Spiral Model Quick and Fix model Prototyping Mode
Last Answer : Waterfall Model
Description : Which most popular input device is used today for interactive processing and for the one line entry of data for batch processing? a. Mouse b. Magnetic disk c. Visual display terminal d. Card punch
Last Answer : Mouse
Description : Which was the most popular first generation computer? a. IBM 1650 b. IBM 360 c. IBM 1130 d. IBM 2700
Last Answer : IBM 1650
Description : In the third generation of computers: a. Distributed data processing first became popular b. An operating system was first developed c. High-level prcedu7ral languages were firs used d. On-line, real time systems first became popular
Last Answer : On-line, real time systems first became popular
Description : Most popular modems availableare based onthe ________standards. A) V-series B) X-series C) VX-series D) none of the above
Last Answer : V-series
Description : The most popular technology in time-division switching is called the _________. A) STI B) ITS C) TSI D) none of the above
Last Answer : TSI
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 : 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 : The two sublayers of a Data Link layer are a. LLC Logical Link Control Layer b. MAC Medium Access Control Layer c. Both A and B d. Data Layer
Last Answer : c. Both A and B
Description : What is MAC ? A computer made by Apple Memory address corruption Mediocre Apple Computer Media Access Control
Last Answer : Media Access Control
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 : A storage device whe3re the access time is depended upon the location of the data is a. Random access b. Serial access c. Sequential access d. Transaction access
Last Answer : Serial access
Description : The disk drive component used to position read/write heads over a specific track I known as a. Acoustic couples b. Access arm c. Cluster d. All of the above
Last Answer : Access arm
Description : A type of core store that has a lower access time than the devices used for working store in the same processor is known as a. Core memory b. Buffer c. Fast core d. Address register
Last Answer : Address register
Description : Any method for controlling access to or use of memory is known a. Memory map b. Memory protection c. Memory management d. Memory instruction
Last Answer : Memory protection
Description : Which of the following memories has the shortest access times? a. Cache memory b. Magnetic bubble memory c. Magnetic core memory d. RAM
Last Answer : Cache memory
Description : Which of the following is a way to access secondary memory? a. Random access memory b. Action method c. Transfer method d. Density method
Last Answer : Random access memory
Description : Before a disk drive can access any sector record, a computer program has to provide the record’s disk address. What information does this address specify? a. Track number b. Sector number c. Surface number d. All of above
Last Answer : Track number
Description : Which of the following is not true for a magnetic disk? a. It is expensive relative to magnetic tape b. It provides only sequential access to stored data c. Users can easily update records by writing over the old data d. All of above
Last Answer : It provides only sequential access to stored data
Description : Offline device is a. A device which is not connected to CPU b. A device which is connected to CPU c. A direct access storage device d. An I/O device
Last Answer : A device which is not connected to CPU
Description : Access time is a. seek time + latency time b. seek time c. seek time – latency time d. latency time
Last Answer : seek time + latency time
Description : The x.25 standard specifies a a. technique for start-stop data b. technique for dial access c. DTE/DCE interface d. data bit rate e. none of above
Last Answer : DTE/DCE interface
Description : The access method in Bluetooth is________. A) FDMA B) TDD-TDMA C) CDMA D) none of the above
Last Answer : TDD-TDMA
Description : In IEEE 802.11, the access method used in the DCF sublayer is _________. A) ALOHA B) CSMA/CA C) CSMA/CD D) none of the above
Last Answer : CSMA/CA
Description : In IEEE 802.11, a___ is made of stationary or mobile wireless stations and anoptional central base station, known as the access point (AP). A) ESS B) BSS C) CSS D) none of the above
Last Answer : BSS
Description : ________is a multiple-access method in which the available bandwidthof a link is shared in time, frequency, or through code, between different stations. A) Random access B) Controlledaccess C) Channelization D) none of the above
Last Answer : Channelization
Description : The _____sublayer is responsible for the operation of the CSMA/CD access method and framing. A) LLC B) MII C) MAC D) none of the above
Last Answer : MAC
Description : The IEEE 802.3 Standard defines _________ CSMA/CD as the access method for first-generation 10-Mbps Ethernet. A) 1-persistent B) p-persistent C) non-persistent D) none of the above
Last Answer : 1-persistent
Description : Database management systems are intended to: A. eliminatedata redundancy B. establishrelationships among records in different files C. manage file access D. maintaindata integrity E. All of theabove
Last Answer : All of theabove
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