Skip to main content

Who is system administrator?

5.Who is System administrator?
Ans.
1. Linux system administrator is the person who has “root” access, which is to say the one who is the system’s ‘superuser’ (or root user).

2. A standard Linux user is limited to whatever he/she can do with underlying engine of the system.

3. But root user has unuttered access to everything that includes user accounts their home directories and the files inside those directories, all system configuration and all the files on the system.

4. A certain body of thought says no one should ever log in as “root” because System administrator tasks can be performed more easily and safely with others.

5. Because system administrator has full privileges his first duty is to know what he is doing.

6. The word duty implies a degree of task or work which is hard to perform.

7. Clearly it’s a tremendous flexibility of system measured against the responsibility to run a tight organisation.

8. These duties do not so much constrain you, the system administrator, as free you to match the job task.


Comments

Popular posts from this blog

Java,ES,QT practical files

All practical files: Click below to start download Uploaded on special request||||

Vidyalankar Question paper solutions

Download from their website: http://www.vidyalankar.org/index.aspx or just click here to download

Explain network classes.

43.Explain network classes. Ans. 1. TCP/IP network are 4 bytes long, called IP addresses and written in dotted-decimal notation. (ex. 192.168.166.5) 2. The decimal numbers must be within the numeric range of 0-255, each IPv4 addresses consist of 4 parts. 3. Each part should conform to the 1-byte requirement. 4. Depending on the value of the first byte of the address, IP addresses can be divided into classes. 5. Network classes are of 3 type and have some specific range • Class A 0-127 • Class B 128-191 • Class C 192-233 6. Class division enables us efficient use of the address numbers. 7. Assigned network numbers are maintained in a database managed by InterNIC to insure that each assignment is unique. 8. After obtaining a network number, the host numbers may be assigned as required, for data transfer ARP maps the IP address to the MAC address of the device. 9. Routers are used for transferring data between 2 devices, routers are default gateway ...