Set - 6

Question 16 :

Could you tell something about the Unix System Kernel? 

Answer :

The kernel is the heart of the UNIX openrating system, it's reponsible for controlling the computer's resouces and scheduling user jobs so that each one gets its fair share of resources.


Question 17 :

What are each of the standard files and what are they normally associated with?

Answer :

They are the standard input file, the standard output file and the standard error file. The first is usually associated with the keyboard, the second and third are usually associated with the terminal screen.


Question 18 :

Give 4 examples which belongs application layer in TCP/IP architecture? 

Answer :

FTP, TELNET, HTTP and TFTP


Question 19 :

What's the meaning of ARP in TCP/IP? 

Answer :

The "ARP" stands for Address Resolution Protocol. The ARP standard defines two basic message types: a request and a response. a request message contains an IP address and requests the corresponding hardware address; a replay contains both the IP address, sent in the request, and the hardware address.


Question 20 :

What is a Makefile? 

Answer :

Makefile is a utility in Unix to help compile large programs. It helps by only compiling the portion of the program that has been changed. 
A Makefile is the file and make uses to determine what rules to apply. make is useful for far more than compiling programs.