Which of the following is/are hard disk performance parameter? A. Seek time B. Latency period C. Access time D. All of the above

Which of the following is/are hard disk performance parameter? A. Seek time B. Latency period C. Access time D. All of the above
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D. All of the above
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............. 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

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

Access time is A) seek time + latency time B) seek time C) seek time D) latency time

Description : Access time is A) seek time + latency time B) seek time C) seek time D) latency time

Last Answer : Answer : A

Access time is A) seek time + latency time B) seek time C) seek time ? latency time D) latency time

Description : Access time is A) seek time + latency time B) seek time C) seek time ? latency time D) latency time

Last Answer : Answer : A

Access time is a. seek time + latency time b. seek time c. seek time – latency time d. latency time

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

Access time is a. seek time + latency time b. seek time c. seek time – latency time d. latency time

Description : Access time is a. seek time + latency time b. seek time c. seek time – latency time d. latency time

Last Answer : a. seek time + latency time

Time taken to move from one cylinder of a HDD to another is called 1) Transfer Rate 2) Average seek time 3) Latency 4) Roundtrip time

Description : Time taken to move from one cylinder of a HDD to another is called 1) Transfer Rate 2) Average seek time 3) Latency 4) Roundtrip time

Last Answer : 2) Average seek time

Time taken to move from one cylinder of a HDD to another is called 1 Transfer Rate 2 Average seek time 3 Latency 4 Roundtrip time

Description : Time taken to move from one cylinder of a HDD to another is called 1 Transfer Rate 2 Average seek time 3 Latency 4 Roundtrip time

Last Answer : 2 Average seek time

Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk service are not influenced by file allocation method. (C) Caching the directories and index blocks in main memory can also help in reducing disk arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.

Description : Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk ... arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.

Last Answer : (B) The number of requests for disk service are not influenced by file allocation method.

The average time required to reach a storage location in memory and obtain its contents is called_____. A. Latency time. B. Access time. C. Turnaround time. D. Response time.

Description : The average time required to reach a storage location in memory and obtain its contents is called_____. A. Latency time. B. Access time. C. Turnaround time. D. Response time.

Last Answer : B. Access time.

Which component is mainly responsible for doing calculation in computer ? (1) Random access memory (2) Control unit (3) Arithmetic logic unit (4) Hard disk

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)

Pipelining improves performance by: (A) decreasing instruction latency (B) eliminating data hazards (C) exploiting instruction level parallelism (D) decreasing the cache miss rate

Description : Pipelining improves performance by: (A) decreasing instruction latency (B) eliminating data hazards (C) exploiting instruction level parallelism (D) decreasing the cache miss rate

Last Answer : (C) exploiting instruction level parallelism

Which statement is true about a cloud computing environment? A. It cannot be used to host location based applications. B. It enables users to access systems regardless of their location. C. It introduces latency as the servers are geographically dispersed. D. It can improve a web server response time by having servers closer to the end user.

Description : Which statement is true about a cloud computing environment? A. It cannot be used to host location based applications. B. It enables users to access systems regardless of their location. C. It introduces ... D. It can improve a web server response time by having servers closer to the end user.

Last Answer : It enables users to access systems regardless of their location.

Consider a disk queue with request for input/output to block on cylinders 98, 183, 37, 122, 14, 124, 65, 67 in that order. Assume that disk head is initially positioned at cylinder 53 and moving towards cylinder number 0. The total number of head movements using Shortest Seek Time First (SSTF) and SCAN algorithms are respectively (A) 236 and 252 cylinders (B) 640 and 236 cylinders (C) 235 and 640 cylinders (D) 235 and 252 cylinders

Description : Consider a disk queue with request for input/output to block on cylinders  98, 183, 37, 122, 14, 124, 65, 67  in that order. Assume that disk head is initially positioned at cylinder 53 and moving ... and 252 cylinders (B) 640 and 236 cylinders (C) 235 and 640 cylinders (D) 235 and 252 cylinders

Last Answer : Answer: 236 and 208 cylinders Explanation: SSTF Initial head position =53 The closest queue to initial head position=65 head moves from 53 to 65=12 head moves from 65 to 67=2 head moves from 67 ... 122=24 head moves from 122 to 124=2 head moves from 124 to 183=59 Total head movement=208 

A disk drive has 100 cylinders, numbered 0 to 99. Disk requests come to the disk driver for cyclinders 12, 26, 24, 4, 42, 8 and 50 in that order. The driver is currently serving a request at cyclinder 24. A seek takes 6 msec per cyclinder moved. How much seek time is needed for shortest seek time first (SSTF) algorithm? (A) 0.984 sec (B) 0.396 sec (C) 0.738 sec (D) 0.42 sec

Description : A disk drive has 100 cylinders, numbered 0 to 99. Disk requests come to the disk driver for cyclinders 12, 26, 24, 4, 42, 8 and 50 in that order. The driver is currently serving a request at cyclinder 24. A seek takes ... (SSTF) algorithm? (A) 0.984 sec (B) 0.396 sec (C) 0.738 sec (D) 0.42 sec

Last Answer : C

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

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

What is Latency Time ?

Description : What is Latency Time ?

Last Answer : The latency time is the time it takes for the appropriate word to come down after the read / write head has been moved to the correct track.

Latency time is A) Time to spin the needed data under head B) Time to spin the needed data under track C) Time to spin data under sector D) All of above

Description : Latency time is A) Time to spin the needed data under head B) Time to spin the needed data under track C) Time to spin data under sector D) All of above

Last Answer : Answer : A

Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?

Description : Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?

Last Answer : Receiver sensitivity.

effect of line parameter on performance of transmission line.

Description : effect of line parameter on performance of transmission line. 

Last Answer : Following are the effect of line parameter on performance of transmission line:  1. Due to resistance (R), voltage drop in transmission line & copper losses in transmission line ... transmission line efficiency, voltage regulation & also power factor of transmission line gets affected. 

. What does HTTP do? A. Enables network resources and reduces perception of latency B. Reduces perception of latency and allows multiple concurrency exchange C. Allows multiple concurrent exchange and enables network resources D. Enables network resources and reduces perception of latency and Allows multiple concurrent exchange.

Description : . What does HTTP do? A. Enables network resources and reduces perception of latency B. Reduces perception of latency and allows multiple concurrency exchange C. Allows multiple concurrent ... D. Enables network resources and reduces perception of latency and Allows multiple concurrent exchange.

Last Answer : D. Enables network resources and reduces perception of latency and Allows multiple concurrent exchange.

The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as A) Magnetic core memory B) Magnetic tape memory C) Magnetic disk memory D) Magnetic bubble memory

Description : The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as A) Magnetic core memory B) Magnetic tape memory C) Magnetic disk memory D) Magnetic bubble memory

Last Answer : Answer : D

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

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 : Answer : B

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

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

Technique of using disk space to make programs believe that the system contains more Random Access Memory(RAM) than is actually available is called ______ A. Random Access Memory B. Primary Memory C. Secondary Memory D. Virtual Memory

Description : Technique of using disk space to make programs believe that the system contains more Random Access Memory(RAM) than is actually available is called ______ A. Random Access Memory B. Primary Memory C. Secondary Memory D. Virtual Memory

Last Answer : D. Virtual Memory

The magnetic storage chips used to provide non-volatile direct access storage of data and that have no moving parts are known as________ A. Magnetic core memory B. Magnetic tape memory C. Magnetic disk memory D. Magnetic bubble memory

Description : The magnetic storage chips used to provide non-volatile direct access storage of data and that have no moving parts are known as________ A. Magnetic core memory B. Magnetic tape memory C. Magnetic disk memory D. Magnetic bubble memory

Last Answer : D. Magnetic bubble memory

Magnetic disk a medium known as 1) Serial access 2) Direct access 3) Sequential access 4) Sequential and rotational access

Description : Magnetic disk a medium known as 1) Serial access 2) Direct access 3) Sequential access 4) Sequential and rotational access

Last Answer : 2) Direct access

A CD-RW disk- 1) Has a faster access than an internal disk 2) Is a form of optical disk, so it can only be written once 3) Holds less data than a floppy disk 4) Can be erased and rewritten

Description : A CD-RW disk- 1) Has a faster access than an internal disk 2) Is a form of optical disk, so it can only be written once 3) Holds less data than a floppy disk 4) Can be erased and rewritten

Last Answer : 4) Can be erased and rewritten

When an array is passed as parameter to a function, which of the following statements is correct ? (A) The function can change values in the original array. (B) In C, parameters are passed by value, the function cannot change the original value in the array. (C) It results in compilation error when the function tries to access the elements in the array. (D) Results in a run time error when the function tries to access the elements in the array.

Description : When an array is passed as parameter to a function, which of the following statements is correct ? (A) The function can change values in the original array. (B) In C, parameters are passed by value, ... . (D) Results in a run time error when the function tries to access the elements in the array.

Last Answer : (A) The function can change values in the original array.

The sum of the seek time, and the rotational delay is called the ……………….. A) reached time B) access time C) arrived time D) common time

Description : The sum of the seek time, and the rotational delay is called the ……………….. A) reached time B) access time C) arrived time D) common time

Last Answer : B) access time

In computer science, data hazard occurs when (1) pipeline changes the order of read/write access to operands (2) performance loss (3) machine size is limited (4) some functional unit is not fully pipelined

Description : In computer science, data hazard occurs when (1) pipeline changes the order of read/write access to operands (2) performance loss (3) machine size is limited (4) some functional unit is not fully pipelined 

Last Answer : pipeline changes the order of read/write access to operands

Which among the following is correct regarding the Boot Sector Viruses: a) These viruses are resides in the boot sector of a floppy or hard disk. b) Such viruses are activated every time a computer boots from an infected disk c) Virus remains in memory until an uninfected floppy disk is inserted into the floppy drive d) All of the Above e) None of These

Description : Which among the following is correct regarding the Boot Sector Viruses: a) These viruses are resides in the boot sector of a floppy or hard disk. b) Such viruses are activated every time a computer ... uninfected floppy disk is inserted into the floppy drive d) All of the Above e) None of These

Last Answer : d) All of the Above

What is a portable hard disk ?

Description : What is a portable hard disk ?

Last Answer : A portable hard disk is a fence. In a word , a portable hard disk is a hard disk that can be used anywhere. A portable hard disk is a portable hard disk that is used with a cable by inserting the hard disk of a laptop or desktop into another casing.

What is the problem with hard disk ?

Description : What is the problem with hard disk ?

Last Answer : Disadvantages of hard disk Hard disk costs more. If the hard disk is damaged, it cannot be repaired. The security of files stored on the hard disk is relatively low. When infected with the virus, it becomes numb. Difficulty in transportation due to heavy load.

What are the benefits of hard disk ?

Description : What are the benefits of hard disk ?

Last Answer : Advantages of Hard Disk: Hard disk works in both Sequential Access and Direct Access methods. Hard disk can store a lot of information. It is a fast storage medium. Hard disk security is high.

How many types of hard disk drives ?

Description : How many types of hard disk drives ?

Last Answer : Computer hard disk can be divided into four main parts. These are: 1. IDE or PATA ( IDE / PATA) hard disk drive 2. SATA hard disk drive 3. Scaji ( SCSI) hard disk drive 4. SAS hard disk drive

What is Hard Disk ?

Description : What is Hard Disk ?

Last Answer : Hard disk is a hard magnetic disk which is more expensive than floppy disk and has more capacity .

How can the user determine what programs are available on a computer? 1) Checking the hard disk properties 2) Viewing the installed programs during the booting process 11 3) Checking the operating system for a list of installed programs. 4) Checking the existing files saved on the disk 5) None of these

Description : How can the user determine what programs are available on a computer? 1) Checking the hard disk properties 2) Viewing the installed programs during the booting process 11 3) Checking the operating system ... of installed programs. 4) Checking the existing files saved on the disk 5) None of these

Last Answer : Answer :4

What is the process of copying software programs from secondary storage media to the hard disk called? 1) Configuration 2) Download 3) Storage 4) Upload 5) Installation

Description : What is the process of copying software programs from secondary storage media to the hard disk called? 1) Configuration 2) Download 3) Storage 4) Upload 5) Installation

Last Answer : Answer :5

This component is required to process data into information and consists of integrated circuits. 1) Hard disk 2) RAM 3) CPU 8 4) ROM 5) None of these

Description : This component is required to process data into information and consists of integrated circuits. 1) Hard disk 2) RAM 3) CPU 8 4) ROM 5) None of these

Last Answer : Answer :3

Virtual memory is 1) Memory on the hard disk that the CPU uses as an extended RAM 2) RAM 3) Only necessary if you do not have any RAM in your computer 4) A back up device for floppy disks 5) None of these

Description : Virtual memory is 1) Memory on the hard disk that the CPU uses as an extended RAM 2) RAM 3) Only necessary if you do not have any RAM in your computer 4) A back up device for floppy disks 5) None of these

Last Answer : Answer :2

To what temporary area can you store text and other data, and later paste them to another location? 1) The clipboard 2) ROM 3) CD-ROM 4) The hard disk 5) None of these

Description : To what temporary area can you store text and other data, and later paste them to another location? 1) The clipboard 2) ROM 3) CD-ROM 4) The hard disk 5) None of these

Last Answer : Answer :1

Which of the following is the largest manufacturer of Hard Disk Drives? A) IBM B) Seagate C) Microsoft D) 3M

Description : Which of the following is the largest manufacturer of Hard Disk Drives? A) IBM B) Seagate C) Microsoft D) 3M

Last Answer : Answer : B

Which of the following devices have a limitation that we can only store information to it but cannot erase or modify it? A) Floppy Disk B) Hard Disk C) Tape Drive D) CDROM

Description : Which of the following devices have a limitation that we can only store information to it but cannot erase or modify it? A) Floppy Disk B) Hard Disk C) Tape Drive D) CDROM

Last Answer : Answer : D

Which of the following disk is fixed disk? A) Hard Disks B) Flash Disks C) Blu-Ray Disks D) DVDs

Description : Which of the following disk is fixed disk? A) Hard Disks B) Flash Disks C) Blu-Ray Disks D) DVDs

Last Answer : Answer : A

The ALU of a computer normally contains a number of high speed storage element called A) Semiconductor memory B) Registers C) Hard disks D) Magnetic disk

Description : The ALU of a computer normally contains a number of high speed storage element called A) Semiconductor memory B) Registers C) Hard disks D) Magnetic disk

Last Answer : Answer : B

The metal disks, which are permanently housed in, sealed and contamination free containers are called A) Hard disks B) Floppy disk C) Winchester disk D) Flexible disk

Description : The metal disks, which are permanently housed in, sealed and contamination free containers are called A) Hard disks B) Floppy disk C) Winchester disk D) Flexible disk

Last Answer : Answer : C

Which of the following is a storage device? A) Tape B) Hard Disk C) Floppy Disk D) All of the above

Description : Which of the following is a storage device? A) Tape B) Hard Disk C) Floppy Disk D) All of the above

Last Answer : Answer : D

Which of the items below are considered removable storage media? A) Removable hard disk cartridges B) (Magneto-optical) disk C) Flexible disks cartridges D) All of the above

Description : Which of the items below are considered removable storage media? A) Removable hard disk cartridges B) (Magneto-optical) disk C) Flexible disks cartridges D) All of the above

Last Answer : Answer : D

Mostly which of the following device is used to carry user files? A) Floppy Disk B) Hard Disk C) RAM D) CDROM

Description : Mostly which of the following device is used to carry user files? A) Floppy Disk B) Hard Disk C) RAM D) CDROM

Last Answer : Answer : A

Hard disk is coated in both side with A) Magnetic metallic oxide B) Optical metallic oxide C) Carbon layer D) All of the above

Description : Hard disk is coated in both side with A) Magnetic metallic oxide B) Optical metallic oxide C) Carbon layer D) All of the above

Last Answer : Answer : A