g.c.e. advanced level 2020 (paper class) information ... 17 (dec - 4 - e... · iv. what are the...

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G.C.E. Advanced Level – 2020 (Paper class)

INFORMATION COMMUNICATION TECHNOLOGY

Tutorial 17 (Dec 3)

Answer all questions

1.

i. Identify the following media and name A,B,C,D of each.

ii. What are the advantages and disadvantages of media which is shown above figure 1?

iii. What are the types of unguided media?

iv. Write 3 advantages of unguided data transmission.

v. Write 3 examples of most popular types of Radio waves.

vi. What are the technologies that use microwaves in data transmission?

vii. What is the media used in TV remote controllers? Give an advantage and a drawback of

that media.

Satellite Communication is one of famous methods in data transmission.

Figure 1

A B C D

A

B

C

D

2.

Figure 2

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i. What type of media used in satellite communication?

ii. Write 3 advantages of using satellites for data transmission?

iii. What is the main drawback of using satellites than using terrestrial towers for data

transmission?

3.

i. Explain the advantage of using a switch for an office network than using a hub?

ii. Write the difference between Firewall and gateway.

iii. Define the function of a Bridge.

iv. Explain the function of a router and how it works?

4. Following questions based on Local Area Networks and Networking Devices.

5.

A

i. What do you understand by “A” in the above figure?

ii. Explain the function of the device you mentioned.

iii. If the input signal is 011001011 to device A from ‘ Q ’, show the output signal to ‘ P ’

using a suitable technique you learned.

i. What is the device can be identified in the picture?

ii. Explain the function of the device you mentioned.

iii. What types of antenna are used in the device? And what

are the other types of antenna?

iv. What are the ports can be seen in the device you

mentioned?

v. What is the relationship between these type of devices and

Wi-Fi?

P

Q

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iv. What are the devices P and Q?

v. Explain the function of it.

vi. Briefly explain how it works.

vii. If the distance between P and Q is 430 km, what is the cheapest method/technique that we

can used to communicate these two LANs?

viii. What is a Bridge?

ix. What is a Gateway?

7.

i. What is GPRS, CDMA stand for?

ii. What is the maximum bit rate in GPRS ?

iii. What is the bandwidth in CDMA communication?

8.

i. What is WLAN? Briefly explain.

ii. What are the equipment required to make a WLAN?

iii. What is the communication medium used in WLAN?

i. What can be the device in R?

ii. What is the function of it?

iii. There is another device which

holds the similar function of R.

Name it and explain the

difference between them?

P Q

R

6. Answer the questions using following network diagram.

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9.

i. What do the letters ADSL stand for?

ii. What are the main advantages in ADSL over Dial-up ?

iii. Name A, B, C, D and E on picture shown below.

***** END ****

A

B C

D

E