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- CS501- Advance Computer Architecture (Session - 1) fall 2010
Fall 2008
CS501- Advance Computer Architecture (Session - 1)
Marks: 75
Question No: 1 ( Marks: 1 ) - Please choose one
Which one of the following is the memory organization of SRC processor?
• 28 * 8 bits
• 216 * 8 bits
• 232 * 8 bits
• 264 * 8 bits
Question No: 2 ( Marks: 1 ) - Please choose one
Type A format of SRC uses -----------instructions
• two
• three
• four
• five
Question No: 3 ( Marks: 1 ) - Please choose one
The instruction ---------------will load
the register R3 with the contents of the memory
location M [PC+56]
• Add R3, 56
• lar R3, 56
• ldr R3, 56
• str R3, 56
Question No: 4 ( Marks: 1 ) - Please choose one
Which format of the instruction is called the accumulator?
• 3-address instructions
• 3-address instructions
• 2-address instructions
• 1-address instructions
• 0-address instructions
Question No: 5 ( Marks: 1 ) - Please choose one
Which one of the following are the code size
and the Number of memory
bytes respectively for a 2-address instruction?
• 4 bytes, 7 bytes
• 7 bytes, 16 bytes
• 10 bytes, 19 bytes
• 13 bytes, 22 bytes
Question No: 6 ( Marks: 1 ) - Please choose one
Which operator is used to name registers, or part of registers, in the Register
Transfer Language?
• :=
• &
• %
• ©
Question No: 7 ( Marks: 1 ) - Please choose one
The transmission of data in which each character is self-contained units with its
own start and stop bits is -----------
• Asynchronous
• Synchronous
• Parallel
• All of the given options
Question No: 8 ( Marks: 1 ) - Please choose one
Circuitry that is used to move data is called -------------
• Bus
• Port
• Disk
• Memory
Question No: 9 ( Marks: 1 ) - Please choose one
Which one of the following is NOT a technique used when the CPU wants to
exchange data with a peripheral device?
• Direct Memory Access (DMA).
• Interrupt driven I/O
• Programmed I/O
• Virtual Memory
Question No: 10 ( Marks: 1 ) - Please choose one
Every time you press a key, an interrupt is generated.
This is an example of
• Hardware interrupt
• Software interrupt
• Exception
• All of the given
Question No: 11 ( Marks: 1 ) - Please choose one
The interrupts which are pre-programmed and the processor automatically finds
the address of the ISR using interrupt vector table are
• Maskable
• Non-maskable
• Non-vectored
• Vectored
Question No: 12 ( Marks: 1 ) - Please choose one
Which is the last instruction of the ISR that is to be executed when the ISR
terminates?
• IRET
• IRQ
• INT
• NMI
Question No: 13 ( Marks: 1 ) - Please choose one
If NMI and INTR both interrupts occur simultaneously, then which one has the
precedence over the other
• NMI
• INTR
• IRET
• All of the given
Question No: 14 ( Marks: 1 ) - Please choose one
Identify the following type of serial communication error condition:
The prior character that was received was not still read by the CPU and is
over written by a new received character.
• Framing error
• Parity error
• Overrun error
• Under-run error
Question No: 15 ( Marks: 1 ) - Please choose one
----------the device usually means reading its status register every so often until
the device's status changes to indicate that it has completed the request.
• Executing
• Interrupting
• Masking
• Polling
Question No: 16 ( Marks: 1 ) - Please choose one
Which I/O technique will be used by a sound card that may need to access data
stored in the computer's RAM?
• Programmed I/O
• Interrupt driven I/O
• Direct memory access(DMA)
• Polling
Question No: 17 ( Marks: 1 ) - Please choose one
For increased and better performance we use _____ which are usually made of glass.
• Coaxial Cables
• Twisted Pair Cables
• Fiber Optic Cables
• Shielded Twisted Pair Cables
Question No: 18 ( Marks: 1 ) - Please choose one
In _____ if we find some call party busy we can have provision of call waiting.
• Delay System
• Loss System
• Single Server Model
• None of the given
Question No: 19 ( Marks: 1 ) - Please choose one
In ____ technique memory is divided into segments of variable sizes depending upon
the requirements.
• Paging
• Segmentation
• Fragmentation
• None of the given
Question No: 20 ( Marks: 1 ) - Please choose one
For a request of data if the requested data is not present in the cache, it is called a _____
• Cache Miss
• Spatial Locality
• Temporal Locality
• Cache Hit
Question No: 21 ( Marks: 1 ) - Please choose one
An entire _____ memory can be erased in one or a few seconds which is much faster
than EPROM.
• PROM
• Cache
• EEPROM
• Flash Memory
Question No: 22 ( Marks: 1 ) - Please choose one
________chips have quartz windows and by applying ultraviolet light data can be
erased from them.
• PROM
• Flash Memory
• EPROM
• EEPROM
Question No: 23 ( Marks: 1 ) - Please choose one
The _______signal coming from the CPU tells the memory that some interaction is
required between the CPU and memory.
• REQUEST
• COMPLETE
None of the given
Question No: 24 ( Marks: 1 ) - Please choose one
______ is a combination of arithmetic, logic and shifter unit along with some
multiplexers and control unit.
• Barrel Rotator
• Control Unit
• Flip Flop
• ALU
Question No: 25 ( Marks: 1 ) - Please choose one
1. In Multiple Interrupt Line, a number of interrupt lines are provided between the
____________________ module.
• CPU and the I/O
• CPU and Memory
• Memory and I/O
• None of the given
Question No: 26 ( Marks: 1 ) - Please choose one
The data movement instructions ___________ data within the machine and to
or from input/output devices.
• Store
• Load
• Move
• None of given
Question No: 27 ( Marks: 1 ) - Please choose one
CRC has ------------ overhead as compared to Hamming code.
• Equal
• Greater
• Lesser
• None of the given
Question No: 28 ( Marks: 1 ) - Please choose one
The ________ is w-bit wide and contains a data word, directly connected to the data
bus which is b-bit wide memory address register (MAR) .
• Instruction Register(IR)
• memory address register (MAR)
• memory Buffer Register(MBR)
• Program counter (PC)
Question No: 29 ( Marks: 1 ) - Please choose one
In_______technique, a particular block of data from main memory can be placed in
only one location into the cache memory .
• Set Associative Mapping
• Direct Mapping
• Associative Mapping
• Block Placement
Question No: 30 ( Marks: 1 ) - Please choose one
_______ indicate the availability of page in main memory.
• Access Control Bits
• Used Bits
• Presence Bits
• None of the given
Question No: 31 ( Marks: 1 )
What are the hardware interrupts in a computer system?Mention its utility.
Question No: 32 ( Marks: 1 )
Consider a LAN, using bus topology. If we replace the bus with a switch, what change
will occur in such a configuration?
Question No: 33 ( Marks: 2 )
Where do you find the utility of hardware interrupts in a computer system?
Question No: 34 ( Marks: 2 )
Differentiate between CPU register and Cache Memory.
Question No: 35 ( Marks: 3 )
Name three important schemes that are commonly used for error control.
Question No: 36 ( Marks: 3 )
What do you understand by the term data synchronization ?
Explain briefly the following schemes of data synchronization in your own words
Synchronous transmission
Asynchronous transmission
Question No: 37 ( Marks: 3 )
Differenciate between Spatial Locality And Temporal Locality .
Question No: 38 ( Marks: 5 )
Given a 16-bit parallel output port attached with the FALCON-A CPU as shown in the figure. The
port is mapped onto address DEh of the FALCON-A s I/O space. Sixteen LED branches are
used to display the data being received from the FALCON-A s data bus. Every LED branch is
wired in such a way that when a 1 appears on the particular data bus bit, it turns the LED on; a 0
turns it off.
Which LEDs will be ON when the instruction
out r2, 222
executes on the CPU? Assume r2 contains 1234h.
Question No: 39 ( Marks: 5 )
Consider a 4 way set-associative cache with 256KB capacity and 32 byte lines
a) How many sets are there in the cache?
b) How many bits of address are required to select a set in cache?
Question No: 40 ( Marks: 10 )
Describe the following features of FALCON-A Assembler
Symbol Table
I/O Ports
List File
Single Step
Error Log
Question No: 41 ( Marks: 10 )
How many platters are required for a 40GB disk if there are 1024
bytes/sector, 2048 sectors per track and 4096 tracks per platter
How many platters are required for a 80GB disk if there are 1024
bytes/sector, 2048 sectors per track and 4096 tracks per platter
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