1. 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
2. Which command in LINUX is used for description of any command ?
help
man
detail
shortdetal
Answer: Option B
3. In the shell, by default, all variables are considered and stored as ?
integer
string
float
chracter
Answer: Option B
4. Default permissions of a file can be changed with ?
group
chperm
chmod
chall
Answer: Option C
5. Which among the following is used to write small programs to control Linux functionalities ?