2. In the shell, by default, all variables are considered and stored as ?
integer
string
float
chracter
Answer: Option B
3. Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time, this is known as ?
Buffer cache
Spooling
Pooling
Virtual Memory
Answer: Option A
4. What control character signals the end of the input file ?
ctrl + s
ctrl + z
ctrl + w
ctrl + d
Answer: Option D
5. Which among following is considered as super daemon ?