ST Microelectronics Papers: Sample Questions 17 - 19 of 40

Examrace Placement Series prepares you for the toughest placement exams to top companies.

Question number: 17

» Aptitude

Short Answer Question▾

Write in Short

Who uses cache mechanism?

Explanation

  • TLB (Translation Lookaside Buffer) is a memory cache for storing recent translations of virtual memory to physical addresses for faster retrieval.
  • Memory management hardware uses this cache to improve the virtual address translation speed. Like, if every request for a memory location emanating from the processor required one or more accesses to main memory then processor would be extremely slow. So high performance processors include TLB. TLB works same as data cache.

Question number: 18

» Aptitude

Short Answer Question▾

Write in Short

If amplitude of signal is reduced to half and N bits samples are used with M quantization level, then SNR will be reduced by a factor of

Explanation

Basically SNR = signal to Noise Ratio

SNR =

Based on Amplitude level, SNR can be defined as,

SNR = 20 log

Here, =

So,

Question number: 19

» Aptitude

MCQ▾

Question

Opposite of Remote?

Choices

Choice (4) Response

a.

Near

b.

Huge

c.

Village

d.

Far

Answer

a.

Explanation

  • The meaning of each word is given below.
  • Remote: distant in space or time (or located far away)
  • Far: over a large expanse of space or time
  • Near: a short period of time from or located a short distance away
  • Huge: extremely large or enormous
  • Village: a group of houses or buildings situated in a rural area
  • From the meaning of each word we can see that exact antonym of remote is near