Consider the following specification of a laptop to answer the questions from 1
ID: 3907621 • Letter: C
Question
Consider the following specification of a laptop to answer the questions from 1 to 5.
1. What is the cycle time of the above CPU?
a. 2/4510 sec
b. 1/(2 * 10 ^ 9) sec
c. 4 sec
d. 1600 sec
2. How many single cycle instructions can be executed by this laptop in 1 sec?
a. 2 million
b. 2 * 230
c. 2 * 109
d. Cannot determine
3. Which one of the following is the fastest memory in this laptop?
a. 1 TB HD
b. 8 GB RAM
c. 4 MB L3 Cache
d. 2 GHz i7
4. What is the size of the dedicated video memory?
a. 2 GB
b. 231 Bytes
c. 234 bits
d. All correct
5. How many bits are required to address the whole RAM of the above computer (assume byte addressing is used without any extention mechanism)?
a. 33 bits
b. 32 bits
c. 31 bits
d. 30 bits
Explanation / Answer
You have not provided the laptop specifications. Kindly provide them so that I can provide you with the correct answers.
For time being, i will try to answer your questions in general so that you can understand the logic behind the solution.
1. CPU has a fixed clock cycle time C = 1/clock rate (seconds/cycle)
So, if your laptop's clock rate is 2*109, then, the clock cycle is 1/(2*109) seconds
2. Most of the CPU available today perform 2 million single cycle instructions in a second.
3. c. 4 MB L3 Cache
Explanation: 1 TB HD is the disk space, hence slow. Wheras 2GHz i7 is the processor, not memory. Among RAM and cache, cache is always faster.
4. The size of the dedicated video memory is given by the size of the graphic card in the system. Generally, it is 2GB.
5. Number of bits required to address the whole RAM = log2(Size of RAM)