Question

5. Which of the following is not a transmission medium?

a. Telephone lines b. Coaxial cable c. Microwave system

6. Optical fibre is a networking medium that transmits ___________ instead of electronic signals to send data.

a. Light rays b. Infrared rays c. Radio waves.

7. A set of characters that represent valid value is called

a. Row b. data c. Record



Q. III. Application based questions: (4 x1=4 Marks)



1. Geeta has created a database of her class and has entered 40 records in it. The teacher has asked her to show the data of those students who have scored greater than 50% marks. Suggest her method to apply the criterion.

______________________________________________________________________



2. Your uncle has five offices in different cities. He wants to connect his computers via networking at various offices. Which type of networking you will suggest him?

______________________________________________________________________



3. School has designed a database for all its students. The designer want to store the Passport size photos of each student to their respective roll no. Can you suggest which data type they should use?

______________________________________________________________________



4. Which type of guided media will you suggest to be used by the cable operator in your city?

____________________________________________________​

Answer 1

Answer:

please ask one question in one time