Magme Guru

Wednesday, April 29, 2020

SSC / RAILWAY April 29, 2020

COMPUTER AWARENESS - MEMORY MCQS SET 69

1. How many 1K × 4 RAM chips would be required to build a 1K × 8 memory system?
A.2        B.4        C.8        D.16
Answer: Option A

2. Which of the following memories uses a MOS capacitor as its memory cell?
A.SRAM            B.DRAM        C.ROM            D.FIFO
Answer: Option B

3. Which of the following faults will the checkerboard pattern test for in RAM?
A.Short between adjacent cells                B.Ability to store both 0s and 1s
C.Dynamically introduced errors between cells        D.All of the above
Answer: Option D

4. On a CD-ROM, ________ are raised areas representing a 1.
A.mounds        B.lands            C.holes            D.pits
Answer: Option B

5. The location of a unit of data in a memory array is called its ________.
A.storage        B.RAM        C.address        D.data
Answer: Option C

6. On a CD-ROM, ________ are recessed areas representing a 0.
A.mounds        B.lands            C.holes            D.pits
Answer: Option D

7. Why is a refresh cycle necessary for a dynamic RAM?
A.to clear the flip-flops                B.to set the flip-flops
C.The refresh cycle discharges the capacitor cells.
D.The refresh cycle keeps the charge on the capacitor cells.
Answer: Option D

8. Which is not a magnetic storage device?
A.Magnetic disk        B.Magnetic tape        C.Magneto-optical disk        D.Optical disk
Answer: Option D

9. The time from the beginning of a read cycle to the end of tACS or tAA is referred to as:
A.access time        B.data hold        C.read cycle time        D.write enable time
Answer: Option A

10. Which of the following memories is volatile?
A.ROM        B.EROM        C.RAM            D.Flash
Answer: Option C

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SSC / RAILWAY April 29, 2020

COMPUTER AWARENESS - MEMORY MCQS SET 68

1. Which of the following is normally used to initialize a computer system's hardware?
A.Bootstrap memory        B.Volatile memory        C.External mass memory
D.Static memory
Answer: Option A

2. What is the difference between static RAM and dynamic RAM?
A.Static RAM must be refreshed, dynamic RAM does not.
B.There is no difference.
C.Dynamic RAM must be refreshed, static RAM does not.
Answer: Option C

3. Microprocessors and memory ICs are generally designed to drive only a single TTL load. Therefore, if several inputs are being driven from the same bus, any memory IC must be ________.
A.buffered        B.decoded        C.addressed            D.stored
Answer: Option A

4. What are the typical values of tOE?
A.10 to 20 ns for bipolar

B.25 to 100 ns for NMOS

C.12 to 50 ns for CMOS
D.All of the above
Answer: Option D

5. Which type of ROM can be erased by UV light?
A.ROM            B.mask ROM        C.EPROM        D.EEPROM
Answer: Option C

6. Which of the following is NOT a type of memory?
A.RAM            B.ROM            C.FPROM        D.EEPROM
Answer: Option C
7. How many address bits are required for a 4096-bit memory organized as a 512 × 8 memory?
A.2        B.4        C.8        D.9
Answer: Option D

8. In general, the ________ have the smallest bit size and the ________ have the largest.
A.EEPROMs, Flash    B.SRAM, mask ROM        C.mask ROM, SRAM        D.DRAM, PROM
Answer: Option A

9. Advantage(s) of an EEPROM over an EPROM is/are:
A.the EPROM can be erased with ultraviolet light in much less time than an EEPROM
B.the EEPROM can be erased and reprogrammed without removal from the circuit
C.the EEPROM has the ability to erase and reprogram individual words
D.the EEPROM can be erased and reprogrammed without removal from the circuit, and can erase and reprogram individual words
Answer: Option D

10. The mask ROM is ________.
A.permanently programmed during the manufacturing process            B.volatile
C.easy to reprogram                                D.extremely expensive
Answer: Option A

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SSC / RAILWAY April 29, 2020

COMPUTER AWARENESS - MEMORY MCQS SET 67

1. Data is written to and read from the disk via a magnetic ________ head mechanism in the floppy drive.
A.cylinder        B.read/write        C.recordable        D.cluster
Answer: Option B

2. What does the term "random access" mean in terms of memory?
A.Addresses must be accessed in a specific order.
B.Any address can be accessed in any order.
Answer: Option B

3. A 64-Mbyte SIMM is installed into a system, but when a memory test is executed, the SIMM is detected as a 32-Mbyte device. What is a possible cause?
A.The memory module was not installed properly.
B.The voltage on the memory module is incorrect.
C.The most significant address line is stuck high or low.
D.The address decoder on the SIMM is faulty.
Answer: Option D

5. How many address lines would be required for a 2K × 4 memory chip?
A.8        B.10        C.11        D.12
Answer: Option C

6. When a RAM module passes the checkerboard test it is:
A.able to read and write only 1s.    B.faulty.    C.probably good.
D.able to read and write only 0s.
Answer: Option C

7. Which type of ROM has to be custom built by the factory?
A.ROM            B.mask ROM            C.EPROM        D.EEPROM
Answer: Option B

8. What is the computer main memory?
A.Hard drive and RAM        B.CD-ROM and hard drive        C.RAM and ROM
D.CMOS and hard drive
Answer: Option C

9. A major disadvantage of the mask ROM is that it:
A.is time consuming to change the stored data when system requirements change
B.is very expensive to change the stored data when system requirements change
C.cannot be reprogrammed if stored data needs to be changed
D.has an extremely short life expectancy and requires frequent replacement
Answer: Option C

10. The periodic recharging of DRAM memory cells is called ________.
A.multiplexing        B.bootstrapping        C.refreshing        D.flashing
Answer: Option C

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SSC / RAILWAY April 29, 2020

COMPUTER AWARENESS - MEMORY MCQS SET 66

1. Which of the following best describes volatile memory?
A.memory that retains stored information when electrical power is removed
B.memory that loses stored information when electrical power is removed
C.magnetic memory
D.nonmagnetic
Answer: Option B

2. What is a major disadvantage of RAM?
A.Its access speed is too slow.

B.Its matrix size is too big.

C.It is volatile.
D.High power consumption
Answer: Option C

3. What two functions does a DRAM controller perform?
A.address multiplexing and data selection

B.address multiplexing and the refresh operation
C.data selection and the refresh operation

D.data selection and CPU accessing
Answer: Option B

5. Dynamic memory cells store a data bit in a ________.
A.diode            B.resistor        C.capacitor        D.flip-flop
Answer: Option C

6. Which is not part of a hard disk drive?
A.Spindle        B.Platter        C.Read/write head        D.Valve
Answer: Option D

7. ROMs retain data when the ________.
A.power is off        B.power is on        C.system is down        D.all of the above
Answer: Option D

8. Typically, how often is DRAM refreshed?
A.2 to 8 ms        B.4 to 16 ms        C.8 to 16 s        D.1 to 2 s
Answer: Option B

9. Which type of ROM can be erased by an electrical signal?
A.ROM            B.mask ROM        C.EPROM        D.EEPROM
Answer: Option D

10. Suppose that a certain semiconductor memory chip has a capacity of 8K × 8. How many bytes could be stored in this device?
A.8,000            B.64,000        C.65,536        D.8,192
Answer: Option D

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SSC / RAILWAY April 29, 2020

COMPUTER AWARENESS - MEMORY MCQS SET 65

1. A CD-R disk is created by applying heat to special chemicals on the disk and these chemicals reflect less light than the areas that are not burned, thus creating the same effect as a pit does on a regular CD.
A.True B.False
Answer: Option A

2. Which of the following is one of the basic characteristics of DRAMs?
A.DRAMs must have a constantly changing input.
B.DRAMs must be periodically refreshed in order to be able to retain data.
C.DRAMs have a broader "dynamic" storage range than other types of memories.
D.DRAMs are simpler devices than other types of memories.
Answer: Option B

3. Which of the following best describes static memory devices?
A.memory devices that are magnetic in nature and do not require constant refreshing
B.memory devices that are magnetic in nature and require constant refreshing
C.semiconductor memory devices in which stored data will not be retained with the power applied unless constantly refreshed
D.semiconductor memory devices in which stored data is retained as long as power is applied
Answer: Option D

4. Which is not a removable drive?
A.Zip B.Jaz C.Hard D.SuperDisk
Answer: Option C

5. Which of the following best describes EPROMs?
A.EPROMs can be programmed only once.

B.EPROMs can be erased by UV.
C.EPROMs can be erased by shorting all inputs to the ground.

D.All of the above.
Answer: Option B

6. How many storage locations are available when a memory device has 12 address lines?
A.144        B.512        C.2048        D.4096
Answer: Option D
7. FIFO is formed by an arrangement of ________.
A.diodes        B.transistors        C.MOS cells        D.shift registers
Answer: Option D
8. Why do most dynamic RAMs use a multiplexed address bus?
A.It is the only way to do it.
B.to make it faster
C.to keep the number of pins on the chip to a minimum
Answer: Option C
9. CCD stands for ________.
A.capacitor charging device

B.capacitor-capacitor drain

C.charged-capacitor device
D.charge-coupled device
Answer: Option D

10. What is the major difference between SRAM and DRAM?
A.DRAMs must be periodically refreshed.
B.SRAMs can hold data via a static charge, even with power off.
C.The only difference is the terminal from which the data is removed—from the FET Drain or Source.
D.Dynamic RAMs are always active; static RAMs must reset between data read/write cycles.
Answer: Option A

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SSC / RAILWAY April 29, 2020

COMPUTER AWARENESS - MEMORY MCQS SET 64

1. A 64-bit word consists of ________.
A.4 bytes        B.8 bytes        C.10 bytes        D.12 bytes
Answer: Option B
2. Which of the following RAM timing parameters determine its operating speed?
A.Tacc            B.tAA and tACS        C.tCO and tOD        D.tRC and tWC
Answer: OptionD

3. The reason the data outputs of most ROM ICs are tristate outputs is to:
A.allow for three separate data input lines.
B.allow the bidirectional flow of data between the bus lines and the ROM registers.
C.permit the connection of many ROM chips to a common data bus.
D.isolate the registers from the data bus during read operations.
Answer: Option C
4. Select the statement that best describes Read-Only Memory (ROM).
A.nonvolatile, used to store information that changes during system operation
B.nonvolatile, used to store information that does not change during system operation
C.volatile, used to store information that changes during system operation
D.volatile, used to store information that does not change during system operation
Answer: Option B
5. How many 2K × 8 ROM chips would be required to build a 16K × 8 memory system?
A.2        B.4        C.8        D.16
Answer: Option C
6. What is the maximum time required before a dynamic RAM must be refreshed?
A.2 ms        B.4 ms        C.8 ms        D.10 ms
Answer: Option A
7. Which of the following best describes random-access memory (RAM)?
A.a type of memory in which access time depends on memory location
B.a type of memory that can be written to only once but can be read from an infinite number of times
C.a type of memory in which access time is the same for each memory location
D.mass memory
Answer: Option C

8. Why are ROMs called nonvolatile memory?
A.They lose memory when power is removed.
B.They do not lose memory when power is removed.
Answer: Option B

9. Which of the following describes the action of storing a bit of data in a mask ROM?
A.A 1 is stored in a bipolar cell by opening the base connection to the address line.
B.A 0 is stored in a bipolar cell by shorting the base connection to the address line.
C.A 1 is stored by connecting the gate of a MOS cell to the address line.
D.A 0 is stored by connecting the gate of a MOS cell to the address line.
Answer: Option C

10.Address decoding for dynamic memory chip control may also be used for:
A.controlling refresh circuits B.read and write control
C.chip selection and address location D.memory mapping
Answer: Option C

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SSC / RAILWAY April 29, 2020

COMPUTER AWARENESS - MEMORY MCQS SET 63

1. How many address bits are needed to select all memory locations in the 2118 16K × 1 RAM?
A.8 B.10 C.14 D.16
Answer: Option C
2. The check sum method of testing a ROM:
A. indicates if the data in more than one memory location is incorrect.
B. provides a means for locating and correcting data errors in specific memory locations.
C. allows data errors to be pinpointed to a specific memory location.
D. simply indicates that the contents of the ROM are incorrect.
Answer: Option D

3. The main advantage of semiconductor RAM is its ability to:
A.retain stored data when power is interrupted or turned off
B.be written to and read from rapidly
C.be randomly accessed
D.be sequentially accessed
Answer: Option B

4. What is the meaning of RAM, and what is its primary role?
A. Readily Available Memory; it is the first level of memory used by the computer in all of its operations.
B. Random Access Memory; it is memory that can be reached by any sub- system within a computer, and at any time.
C. Random Access Memory; it is the memory used for short-term temporary data storage within the computer.
D. Resettable Automatic Memory; it is memory that can be used and then automatically reset, or cleared, after being read from or written to.
Answer: Option C

5. The storage element for a static RAM is the ________.
A. diode        B. resistor        C. capacitor        D .flip-flop
Answer: Option D
6. In a DRAM, what is the state of R/W during a read operation?
A.Low            B.High            C.Hi-Z            D.None of the above
Answer: Option B
7. The condition occurring when two or more devices try to write data to a bus simultaneously is called ________.
A. address decoding    B. bus contention    C.bus collisions        D.address multiplexing
Answer: Option B
8. Which is/are the basic refresh mode(s) for dynamic RAM?
A.Burst refresh        B.Distributed refresh    C.Open refresh
D.Burst refresh and distributed refresh
Answer: Option D

9.One of the most important specifications on magnetic media is the ________.
A.rotation speed    B.tracks per inch    C.data transfer rate    D.polarity reversal rate
Answer: Option C

10. What is the bit storage capacity of a ROM with a 1024 × 8 organization?
A.1024 B.2048 C.4096 D.8192
Answer: Option D

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UPSC April 29, 2020

GK-IMPORTANT DAYS AND EVENTS MCQS PART 10

1.Which day is celebrated on May 6 every year?
A. World Day Of The Deaf
B. World Haemophilia Day
C. International Awareness Day for Orthogenesis Imperfect
D. International Mourning Day

2.Which day is celebrated on May 7 every year?
A. Bladder Cancer Awareness Day
B. World Day for Audiovisual Heritage
C. International Pashtun Jirga Day
D. The International Day against Corruption

3.Which day is celebrated on May 8 every year?
A. World Book and Copyright Day
B. World Red Cross & Red Crescent Day
C. International Women's Day
D. World Naturist Day

4.Which day is celebrated on May 9 every year?
A.World Car Free Day
B. World Nature Conservation Day
C. Europe Day
D. World Radiographer Day

5.Which day is celebrated on May 9 every year?
A. World Thalassaemia Day
B. Hydrocephalus Day
C. World Senior Citizen Day
D. National Vaccination Day

6.Which day is celebrated on May 10 every year?
A. Cultural Unity Day
B. International Day of Non-Violence
C. World Mother Day
D. World Theatre Day

7.Which day is celebrated on May 11 every year?
A. National Technology Day
B. World Day for Water
C. World Solar Energy Day
D. World Trauma Day

8.Which day is celebrated on May 12 every year?
A. World Hypertension Day
B. International Beer Day
C. International Criminal Court Day
D. World Day of the Sick

9.Which day is celebrated on May 12 every year?
A. World Day Of The Deaf
B. National Coming Out Day
C. World Alzheimer's Day
D. World Nurses Day

10.Which day is celebrated on May 13 every year?
A. World Day Against Child Labour
B. International Criminal Court Day
C. World Aids Day
D. World Car Free Day

Answer Keys:
1.C
2.A
3.B
4.C
5.A
6.C
7.A
8.A
9.D
10.B

Magme Guru 0

UPSC April 29, 2020

GK-IMPORTANT DAYS AND EVENTS MCQS PART 09

1.Which day is celebrated on April 28 every year?
A. Indian Navy Day
B. World Day for Safety and Health at Work
C. World Nurses Day
D. International Astronomy Day

2.Which day is celebrated on April 29 every year?
A. International Women's Day
B. International Dance Day
C. International Migrants Day
D. World White Cane Day

3.Which day is celebrated on April 30 every year?
A. International Museum Day
B. International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade
C. International Jazz Day
D. Central Excise Day

4.Which day is celebrated on May 1 every year?
A. World Malaria Day
B. World Naturist Day
C. World Radiographer Day
D. World Humanitarian Action Day

5.Which day is celebrated on May 2 every year?
A. World Suicide Prevention Day
B. International Animal Rights Day
C. Hindi Day
D. International Astronomy Day

6.Which day is celebrated on May 3 every year?
A. International Astronomy Day
B. World Solar Energy Day
C. Safer Internet Day (International)
D. International Meatless

7.Which day is celebrated on May 3 every year?
A. Teachers Day
B. World Ozone Day
C. World Asthma Day
D. World Hospice and Palliative Care Day

8.Which day is celebrated on May 3 every year?
A. World Autism Awareness Day
B. World Thrift Day
C. National Girl child day
D. World Press Freedom Day

9.Which day is celebrated on May 4 every year?
A. Hydrocephalus Day
B. International Holocaust Remembrance Day
C. International Fire fighters Day
D. European Day of Languages

10.Which day is celebrated on May 5 every year?
A. World Disabled Day
B. World Athletics Day
C. World Interact Day
D. World Trauma Day

Answer Keys:
1.B
2.B
3.C
4.B
5.D
6.D
7.C
8.D
9.C
10.B

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Wednesday, April 29, 2020

COMPUTER AWARENESS - MEMORY MCQS SET 69

COMPUTER AWARENESS - MEMORY MCQS SET 69

COMPUTER AWARENESS - MEMORY MCQS SET 68

COMPUTER AWARENESS - MEMORY MCQS SET 68

COMPUTER AWARENESS - MEMORY MCQS SET 67

COMPUTER AWARENESS - MEMORY MCQS SET 67

COMPUTER AWARENESS - MEMORY MCQS SET 66

COMPUTER AWARENESS - MEMORY MCQS SET 66

COMPUTER AWARENESS - MEMORY MCQS SET 65

COMPUTER AWARENESS - MEMORY MCQS SET 65

COMPUTER AWARENESS - MEMORY MCQS SET 64

COMPUTER AWARENESS - MEMORY MCQS SET 64

COMPUTER AWARENESS - MEMORY MCQS SET 63

COMPUTER AWARENESS - MEMORY MCQS SET 63

GK-IMPORTANT DAYS AND EVENTS MCQS PART 10

GK-IMPORTANT DAYS AND EVENTS MCQS PART 10

GK-IMPORTANT DAYS AND EVENTS MCQS PART 09

GK-IMPORTANT DAYS AND EVENTS MCQS PART 09

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