Message switching: The source computer sends data (message) to the switching station, which stores data in a buffer. It then looks for a free link to another switching station and sends data to that station. This process continues until data is delivered to the destination computer. This type of switching technique is also known as “store and forward” switching.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
[Filename: ch4/ch-4_Q10]
(a) Stealing brand new hard disk from a shop
(b) Getting into unknown person’s social networking account and start messaging on his behalf.
(c) Copying some important data from a computer without taking permission from the owner of the data.
Table: TEACHER
| TID | NAME | AGE | DEPT | DATEOFJOIN | SAL | SEX |
| T118 | Navin | 40 | Computer | 2010-01-10 | 12000 | M |
| T107 | Chetna | 37 | History | 2008-03-24 | 20000 | F |
| T105 | Sandeep | 46 | Maths | 2006-12-12 | 30000 | M |
| T110 | Sangeeta | 35 | History | 2010-07-01 | 25000 | F |
| T101 | Rudransh | 42 | Maths | 2004-09-05 | 40000 | M |
| T121 | Neeraj | 38 | Physics | 2011-04-01 | 28000 | M |
(i) To show information about the teachers of the history department.
(ii) To list the names of teachers earning a salary between 20000 and 30000.
(iii) To count the number of male teachers.
(iv) Display gender wise total number of teachers.
(v) To list the name and age of teachers of female teachers in descending order of date of join.
(vi) Increase the salary by 10% for Maths departments.
( vii) To delete the record of teacher Neeraj.

(a) Extract the "net "from the word "Internet ".
(b) Print the month of your date of birth.