WGU C952 PA questions with verified answers
A cache has 16 one-word blocks. Memory blocks are mapped to fully associative
caches. Memory block is 15.
What is the cache position given the cache configuration and memory block?
A- Block 7
B- Block 15
C- Any of the 15 cache blocks
D- Any of the 16 cache blocks Ans✓✓✓ D
A company needs the ability to host a low-cost network of servers and thin clients
that host different operating systems needed to support differing applications.
Which solution will meet these needs?
A- RAID
B- Hypervisor
C- RISC architecture
D- Instruction-level parallelism Ans✓✓✓ B
A program has a CPI of 10 on a target platform. The processor pipeline is
expanded and clock rate is increased by a factor of 5, but the CPI fails to decrease
accordingly.
,Which factor is negatively affecting performance?
A- Cache memory
B- Virtual memory
C- Hard disk drive
D- Single processor Ans✓✓✓ A
A program requires one billion instructions to execute on a processor running at 4
GHz. Exactly 50% of the instructions execute in three clock cycles, 30% execute in
four clock cycles, and 20% execute in five clock cycles resulting in an execution
time of 1.075 seconds.
Which adjustment improves overall performance by 12%?
A- 30% execute at three cycles and 70% at four cycles
B- 70% execute at three cycles and 30% at four cycles
C- 100% execute at three cycles
D- 100% execute at four cycles Ans✓✓✓ B
A program runs alone on a CPU. The CPU clock rate is 3e9 cycles per second, i.e., 3
GHz. It takes the CPU 15e9 clock cycles to complete the program. The CPU clock
cycle time is 500e-12 second, i.e., 500 picoseconds.
How many seconds is the CPU performance for the task?
A- 1.5
, B- 7.5
C- 15
D- 75 Ans✓✓✓ B
A storage solution for video editing is being planned. The requirements are:
Largest storage space
No redundancy
Fastest I/O speed
Which RAID solution should be implemented?
A- RAID 0
B- RAID 1
C- RAID 5
D- RAID 6 Ans✓✓✓ A
A system designer wants to lower the cost of communicating at a high clock rate
over the network.
How can this goal be accomplished?
A- Increase the network latency
B- Extend the length of the wires
C- Reduce the distance of each link
A cache has 16 one-word blocks. Memory blocks are mapped to fully associative
caches. Memory block is 15.
What is the cache position given the cache configuration and memory block?
A- Block 7
B- Block 15
C- Any of the 15 cache blocks
D- Any of the 16 cache blocks Ans✓✓✓ D
A company needs the ability to host a low-cost network of servers and thin clients
that host different operating systems needed to support differing applications.
Which solution will meet these needs?
A- RAID
B- Hypervisor
C- RISC architecture
D- Instruction-level parallelism Ans✓✓✓ B
A program has a CPI of 10 on a target platform. The processor pipeline is
expanded and clock rate is increased by a factor of 5, but the CPI fails to decrease
accordingly.
,Which factor is negatively affecting performance?
A- Cache memory
B- Virtual memory
C- Hard disk drive
D- Single processor Ans✓✓✓ A
A program requires one billion instructions to execute on a processor running at 4
GHz. Exactly 50% of the instructions execute in three clock cycles, 30% execute in
four clock cycles, and 20% execute in five clock cycles resulting in an execution
time of 1.075 seconds.
Which adjustment improves overall performance by 12%?
A- 30% execute at three cycles and 70% at four cycles
B- 70% execute at three cycles and 30% at four cycles
C- 100% execute at three cycles
D- 100% execute at four cycles Ans✓✓✓ B
A program runs alone on a CPU. The CPU clock rate is 3e9 cycles per second, i.e., 3
GHz. It takes the CPU 15e9 clock cycles to complete the program. The CPU clock
cycle time is 500e-12 second, i.e., 500 picoseconds.
How many seconds is the CPU performance for the task?
A- 1.5
, B- 7.5
C- 15
D- 75 Ans✓✓✓ B
A storage solution for video editing is being planned. The requirements are:
Largest storage space
No redundancy
Fastest I/O speed
Which RAID solution should be implemented?
A- RAID 0
B- RAID 1
C- RAID 5
D- RAID 6 Ans✓✓✓ A
A system designer wants to lower the cost of communicating at a high clock rate
over the network.
How can this goal be accomplished?
A- Increase the network latency
B- Extend the length of the wires
C- Reduce the distance of each link
