The Register that stores all interrupt requests is: (A) Interrupt mask register (B) Interrupt service register (C) Interrupt request register (D) Status register

The Register that stores all interrupt requests is: (A) Interrupt mask register (B) Interrupt service register (C) Interrupt request register (D) Status register
by

1 Answer

Answer :

(C) Interrupt request register
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Related questions

A CPU handles interrupt by executing interrupt service subroutine................. (A) by checking interrupt register after execution of each instruction (B) by checking interrupt register at the end of the fetch cycle (C) whenever an interrupt is registered (D) by checking interrupt register at regular time interval

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Last Answer : (A) by checking interrupt register after execution of each instruction

Which of the following is/are the sources for project requests? A) Request from Department managers B) Request from senior executives C) Request from system Analyst D) All of the above

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Last Answer : D) All of the above

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

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Last Answer : C

Which are the flags of status register: a. Over flow flag b. Carry flag c. Half carry flag d. Zero flag e. Interrupt flag f. Negative flag g. All of these

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Last Answer : g. All of these

The contents of Register (BL) and Register (AL) of 8085 microprocessor are 49H and 3AH respectively. The contents of AL, the status of carry flag (CF) and sign flag (SF) after executing 'SUB AL, BL' assembly language instruction, are (1) AL=0FH; CF=1; SF=1 (2) AL=F0H; CF=0; SF=0 (3) AL=F1H; CF=1; SF=1 (4) AL=1FH; CF=1; SF=1

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Last Answer : Answer: 3

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.

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Last Answer : All of the mentioned

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Point out the correct statement. a) A client can request access to a cloud service from any location b) A cloud has multiple application instances and directs requests to an instance based on conditions c) Computers can be partitioned into a set of virtual machines with each machine being assigned a workload d) All of the mentioned

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Last Answer : All of the mentioned

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Last Answer : All of the mentioned

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Description : Assuming that the disk head is located initially at 32, find the number of disk moves required with FCFS if the disk queue of I/O block requests are 98, 37, 14, 124, 65, 67: (A) 310 (B) 324 (C) 320 (D) 321

Last Answer : (D) 321

If the Disk head is located initially at track 32, find the number of disk moves required with FCFS scheduling criteria if the disk queue of I/O blocks requests are: 98, 37, 14, 124, 65, 67 (A) 320 (B) 322 (C) 321 (D) 319

Description : If the Disk head is located initially at track 32, find the number of disk moves required with FCFS scheduling criteria if the disk queue of I/O blocks requests are: 98, 37, 14, 124, 65, 67 (A) 320 (B) 322 (C) 321 (D) 319

Last Answer : (C) 321

Consider a disk queue with I/O requests on the following cylinders in their arriving order: 6,10,12,54,97,73,128,15,44,110,34,45 The disk head is assumed to be at cylinder 23 and moving in the direction of decreasing number of cylinders. Total number of cylinders in the disk is 150. The disk head movement using SCAN-scheduling algorithm is: (1) 172 (2) 173 (3) 227 (4) 228

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Last Answer : (2) 173

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Last Answer : C) i-b, ii-c, iii-a

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Last Answer : (C) 9 and 8

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Last Answer : Answer: D

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Last Answer : (C) A software interrupt

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Last Answer : Answer: 4

What is the difference between request and requests?

Description : What is the difference between request and requests?

Last Answer : The difference is when you demand for something you're notasking for it you're telling them for it. When you request forsomething, you are simple just asking for it.

A special request originated from some device to the CPU to acquire some of its time is called ___________ a) Disturbance b) Attenuation c) Interrupt d) Noise

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………………….. implies that all subnets obtained from the same subnet mask. A) Static subnetting B) Dynamic subnetting C) Variable length subnetting D) Both B and C

Description : ………………….. implies that all subnets obtained from the same subnet mask. A) Static subnetting B) Dynamic subnetting C) Variable length subnetting D) Both B and C

Last Answer : A) Static subnetting

........ implies that all subnets obtained from the same network use the subnet mask. A) Static subnetting B) Dynamic Subnetting C) Variable length subnetting D) Both B and C

Description : ........ implies that all subnets obtained from the same network use the subnet mask. A) Static subnetting B) Dynamic Subnetting C) Variable length subnetting D) Both B and C

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A network on the Internet has a subnet mask of 255.255.240.0. What is the maximum number of hosts it can handle ? (A) 1024 (B) 2048 (C) 4096 (D) 8192

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Last Answer : (C) 4096

Beam-penetration and shadow-mask are the two basic techniques for producing color displays with a CRT. Which of the following is not true ? I. The beam-penetration is used with random scan monitors. II. Shadow-mask is used in raster scan systems. III. Beam-penetration method is better than shadow-mask method. IV. Shadow-mask method is better than beam-penetration method. (A) I and II (B) II and III (C) III only (D) IV only

Description : Beam-penetration and shadow-mask are the two basic techniques for producing color displays with a CRT. Which of the following is not true ? I. The beam-penetration is used with random scan monitors. II. Shadow-mask is used ... -penetration method. (A) I and II (B) II and III (C) III only (D) IV only

Last Answer : (C) III only

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Description : Which of the following is/are restriction(s) in classless addressing ? (A) The number of addresses needs to be a power of 2. (B) The mask needs to be included in the address to define the block. (C) The starting address must be divisible by the number of addresses in the block. (D) All of the above

Last Answer : (D) All of the above

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Last Answer : A) i-false, ii-false

The …………….. policy segments the disks request queue into sub queues of the length N. A) SCAN B) C-SCAN C) N-Step SCAN D) FSCAN

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Last Answer : D) All of the above

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Last Answer : B) i-True, ii-True

............. 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

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Last Answer : B) SSTF

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A client-server system uses a satellite network, with the satellite at a height of 40,000 kms. What is the best-case delay in response to a request? (Note that the speed of light in air is 3,00,000 km/second). (A) 133.33 m sec (B) 266.67 m sec (C) 400.00 m sec (D) 533.33 m sec

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Last Answer : (D) 533.33 m sec Explanation: The request has to go up and down, and the response has to go up and down. The total path length traversed is thus 160.000 km. The speed of light in air and vacuum is 300,000 km/sec, so the propagation delay alone is 160,000/300,000 sec or about 533 msec. 

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 

Which one of the following is not an addressing mode? (A) Register indirect (B) Auto increment (C) Relative indexed (D) Immediate operand

Description : Which one of the following is not an addressing mode? (A) Register indirect (B) Auto increment (C) Relative indexed (D) Immediate operand

Last Answer : (C) Relative indexed

The advantage of ............... is that it can reference memory without paying the price of having a full memory address in the instruction. (A) Direct addressing (B) Indexed addressing (C) Register addressing (D) Register Indirect addressing

Description : The advantage of ............... is that it can reference memory without paying the price of having a full memory address in the instruction. (A) Direct addressing (B) Indexed addressing (C) Register addressing (D) Register Indirect addressing

Last Answer : (D) Register Indirect addressing

Debugger is a program that (A) allows to examine and modify the contents of registers (B) does not allow execution of a segment of program (C) allows to set breakpoints, execute a segment of program and display contents of register (D) All of the above

Description : Debugger is a program that (A) allows to examine and modify the contents of registers (B) does not allow execution of a segment of program (C) allows to set breakpoints, execute a segment of program and display contents of register (D) All of the above

Last Answer : (C) allows to set breakpoints, execute a segment of program and display contents of register

What will be the hexadecimal value in the register ax (32-bit) after executing the following instructions? Mov al, 15 Mov ah, 15 Xor al, al Mov cl, 3 Shr ax, cl Codes: (A) 0F00 h (B) 0F0F h (C) 01E0 h (D) FFFF h

Description : What will be the hexadecimal value in the register ax (32-bit) after executing the following instructions? Mov al, 15 Mov ah, 15 Xor al, al Mov cl, 3 Shr ax, cl Codes: (A) 0F00 h (B) 0F0F h (C) 01E0 h (D) FFFF h

Last Answer : (C) 01E0 h

The ............... addressing mode is similar to register indirect addressing mode, except that an offset is added to the contents of the register. The offset and register are specified in the instruction. (A) Base indexed (B) Base indexed plus displacement (C) Indexed (D) Displacement

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Last Answer : (D) Displacement

In 8085, which of the following performs: load register pair immediate operation? (1) LDAX rp (2) LHLD addr (3) LXI rp, data (4) INX rp

Description : In 8085, which of the following performs: load register pair immediate operation? (1) LDAX rp (2) LHLD addr (3) LXI rp, data (4) INX rp

Last Answer : Answer: 3

Which of the following storage classes have global visibility in C/C++? (1) Auto (2) Extern (3) Static (4) Register

Description : Which of the following storage classes have global visibility in C/C++? (1) Auto (2) Extern (3) Static (4) Register

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Last Answer : A) i-b, ii-d, iii-a, iv-c

Match the following HTTP status code to their respective definitions. i) 400 a) OK ii) 500 b) Not found iii) 200 c) Continue iv) 100 d) Internal server error A) i-b, ii-d, iii-a, iv-c B) i-a, ii-b, iii-c, iv-d C) i-b, ii-c, iii-a, iv-d D) i-b, ii-a, iii-c, iv-d

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Last Answer : A) i-b, ii-d, iii-a, iv-c

.......... displays the information about the active document such as page number, section number, number of pages, insertion point, position, etc. A) View Bar B) Menu Bar C) Status Bar D) Ruler Lin

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Last Answer : C) Status Bar