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 : b. Access arm
Description : In the actuator arm assembly of a hard disk drive transport, what device can position the magnetic heads to the correct track of a hard disk more accurately than a dc stepper motor?
Last Answer : Voice coil servo.
Description : The head arm assembly of a floppy disk drive transport has how many read heads and how many write heads?
Last Answer : Two read heads and two write heads.
Description : the storage capacity of a disk system depends on the bits per inch of track and the tracks per inch of a. Cylinder b. Hum c. Cluster d. Surface
Last Answer : Surface
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 : Reading data is performed in magnetic disk by a. Read/write leads b. Sectors c. Track d. Lower surface
Last Answer : Read/write leads
Description : What is the number of read-write heads in the drive for a 9-trac magnetic tape? a. 9 b. 16 c. 18 d. 27
Last Answer : 27
Description : ............. is the time required to move the disk arm to the required track. A) Seek time B) Rotational delay C) Latency time D) Access time
Last Answer : A) Seek time
Description : What part of a floppy disk drive transport uses a dc stepper motor to position the magnetic heads over the recording surface of a floppy disk?
Last Answer : Actuator arm assembly.
Last Answer : d. Surface
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 : Answer : D
Last Answer : d. All of above
Description : What does the disk drive of a computer do? a. Rotate the disk b. Read the disk c. Load a program from the disk into the memory d. Both b and c
Last Answer : Both b and c
Description : A disk has 500 bytes/sector,100 sectors / track, 20 heads and 1000 cylinders. Total capacity of disk is (a) 1 GB (b) 100 MB (c) 10 MB (d) 10 GB
Last Answer : A disk has 500 bytes/sector,100 sectors / track, 20 heads and 1000 cylinders. Total capacity of disk is 1 GB
Description : In a Hadoop cluster, what is true for a HDFS block that is no longer available due to disk corruption or machine failure? a)It is lost for ever b)It can be replicated form its alternative locations ... to read it. d)The Mapreduce job process runs ignoring the block and the data stored in it.
Last Answer : It can be replicated form its alternative locations to other live machines.
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 : Seek time is a. time to position the head over proper track b. time to position the head over proper sector c. time to position the head over proper cylinder d. none of above
Last Answer : time to position the head over proper track
Description : Separate Read/Write heads are required in which of these memory access schemes. 1) Random Access 2) Sequential Access 3) Direct Access 4) None of these
Last Answer : 4) None of these
Description : Separate Read/Write heads are required in which of these memory access schemes. 1 Random Access 2 Sequential Access 3 Direct Access 4 None of these
Last Answer : 4 None of these
Description : Reading data is performed in magnetic disk by A) Read/write leads B) Sectors C) Track D) Lower surface
Last Answer : Answer : A
Last Answer : a. Read/write leads
Description : ............. policy selects the disk I/O request that requires the least movement of the disk arm from its current position. A) FSCAN B) SSTF C) SCAN D) C-SCAN
Last Answer : B) SSTF
Description : What is the number of read-write heads in the drive for a 9- trac magnetic tape? A) 9 B) 16 C) 18 D) 27
Last Answer : a. 9
Description : The resultant of the following three couples 20 kg force, 0.5 m arm, +ve sense 30 kg force, 1 m arm, -ve sense 40 kg force, 0.25 m arm, +ve sense having arm of 0.5 m will be (A) 20 kg, -ve sense (B) 20 kg, +ve sense (C) 10 kg, +ve sense (D) 10 kg, -ve sense
Last Answer : (A) 20 kg, -ve sense
Description : The IBM PC-XT was the first to include a hard drive. What was the capacity of this disk ? 750 KB 10 KB 20 KB 1.44 KB
Last Answer : 10 KB
Description : Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computes? a. Home computers b. Diskless computers c. Dedicated computers d. General purpose computers
Last Answer : Home computers
Description : CD-ROM stands for a. Compactable Read Only Memory b. Compact Data Read Only Memory c. Compactable Disk Read Only Memory d. Compact Disk Read Only Memory
Last Answer : Compact Disk Read Only Memory
Description : Which component is mainly responsible for doing calculation in computer ? (1) Random access memory (2) Control unit (3) Arithmetic logic unit (4) Hard disk
Last Answer : ALU (Arithmetic logic unit)
Description : A freight car weighing 20 tons and moving at a speed of 7 miles per hour on a horizontal track collides and couples with a stationary car that weighs 15 tons. Neglecting friction, determine the velocity of the coupled cars.
Last Answer : ANSWER: 4 MILES PER HOUR
Description : Consider a disk with 16384 bytes per track having a rotation time of 16 msec and average seek time of 40 msec. What is the time in msec to read a block of 1024 bytes from this disk? (A) 57 msec (B) 49 msec (C) 48 msec (D) 17 msec
Last Answer : Answer: B
Description : In SQL, the command(s) is (are)used tocreate an index for atable or cluster A. CREATE INDEX B. MODIFY INDEX C. SET INDEX TO FILE D. All of theabove E. None of the above
Last Answer : CREATE INDEX
Description : A group of magnetic tapes, videos or terminals usually under the control of one master is A) Cylinder B) Surface C) Track D) Cluster
Description : A group of magnetic tapes, videos or terminals usually under the control of one master is a. Cylinder b. Surface c. Track d. Cluster
Last Answer : d. Cluster
Description : The control electronics component of a floppy or hard disk drive performs what three main functions?
Last Answer : a. Spins the disk at the correct speed. b. Moves the heads across the recording surface. c. Tells the write/read heads when to write data and when to read it.
Description : .In computing, ________ improves the distribution of workloads across multiple computing resources, such as computers, a computer cluster, network links, central processing units, or disk drives. a) Virtual machine b) Virtual computing c) Virtual cloud d) Load balancer
Last Answer : Load balancer
Description : During Safemode Hadoop cluster is in a) Read-only b) Write-only c) Read-Write d) None of the above
Last Answer : Read-only
Description : What is the latest write-once optical storage media? a. Digital paper b. Magneto-optical disk c. WORM disk d. CD-ROM disk
Last Answer : Magneto-optical disk
Description : A hard disk is divided into tracks which is further subdivided into (A) Clusters (B) Sectors (C) Vectors (D) Heads
Last Answer : (B) Sectors
Description : What does the disk drive of a computer do? A) Rotate the disk B) Read the disk C) Load a program from the disk into the memory D) Both b and c
Description : Which of the following Devices have a limitation that we can only read it but can not erase and modify it? 1) Tape Drive 2) Hard Disk 3) Compact Disk 4) Floppy Disk
Last Answer : 4) Floppy Disk
Last Answer : d. Both b and c
Description : Write about Channel Access on links. Multiple Access Techniques Frequency Division Multiple Access
Last Answer : ∙ In frequency-division multiple access (FDMA), the available bandwidth is divided into frequency bands. ∙ Each station is allocated a band to send its data. ∙ When any one frequency level is ... called chips. ∙ Chips will be added with the original data and it can be transmitted through same
Description : Compare pin type and suspension insulators on given points: (i) Position of insulator on cross arm. (ii) Position of conductor on insulator. (iii) Reaction on cross arm. (iv) Possibility of ... Replacement cost (vi) Maximum voltage level (vii) Effect on height of supporting structure. (viii) Life
Last Answer : S.No Points Pin Type insulator Suspension or Disc Type insulator 1 Position of insulator on cross arm It is fixed on top of cross arm by using galvanized steel pin. So it is ... so to maintain minimum ground clearance height of pole increase. 8 Life Less More