The image presents a set of multiple-choice questions related to Information and Communication Technology. We need to identify the correct answer for each question.

1. Problem Description

The image presents a set of multiple-choice questions related to Information and Communication Technology. We need to identify the correct answer for each question.

2. Solution Steps

Question 1: The Sri Lanka Railways online train seat reservation system falls under e-tourism, which typically corresponds to G2C (Government to Citizen) services.

Therefore, the answer is (1) G2C.

Question 2: Keyboard usage started in the third generation, the emergence of the internet was in the fourth generation, the emergence of operating systems was in the third generation, and the use of integrated circuits began in the third generation.

Therefore, the answer is (2) Second generation, fourth generation, third generation, third generation.

Question 3: Among the given printers, the dot matrix printer generally has the lowest ink cost.

Therefore, the answer is (3) Dot matrix printer.

Question 4: In a mesh topology, if one computer is down, the others can still communicate. Thus, "All computers must be active to function the network" is a false statement. Communication privacy is not inherently ensured.

Therefore, the answer is (2) a and b.

Question 5: We need to convert 123 to binary, octal and hexadecimal.

Decimal 123 to Binary:

123 / 2 = 61 remainder 1

61 / 2 = 30 remainder 1

30 / 2 = 15 remainder 0

15 / 2 = 7 remainder 1

7 / 2 = 3 remainder 1

3 / 2 = 1 remainder 1

1 / 2 = 0 remainder 1

So, the binary representation is

1

1

1

1

0

1

1.

Decimal 123 to Octal:

123 / 8 = 15 remainder 3

15 / 8 = 1 remainder 7

1 / 8 = 0 remainder 1

So, the octal representation is

1

7

3.

Decimal 123 to Hexadecimal:

123 / 16 = 7 remainder 11 (B)

7 / 16 = 0 remainder 7

So, the hexadecimal representation is 7B.

Therefore, the answer is (1) 1111011, 173, 7B.

Question 6:

'B' in ASCII is 66 (01000010)

'A' in ASCII is 65 (01000001)

'D' in ASCII is 68 (01000100)

Therefore, the answer is (3) 1000010 1000001

1

0

0

0

1

0

0.

Question 7: We need to find which is not equivalent to 8192MB.

1 GB = 1024 MB. So, 8192 MB = 8 GB = 2^3 GB = 2^(3+10) KB, which is 2^13 KB. Also 8192MB = 8192 * 1024 * 1024 Bytes. 1 MB = 2^20 bytes. 8192MB = 2^3 * 2^20 bytes = 2^23 bytes. Finally, 8192MB = 8192 * 1024 * 1024 * 8 bits = 2^3 * 2^10 * 2^10 * 2^3 bits = 2^26 bits. Therefore the answer is (4) $2^{35}$ bit.

Question 8: We need to find the Boolean expression equivalent to $A(\overline{A}+B)$. Using the distributive law, $A(\overline{A}+B) = A\overline{A} + AB$. Since $A\overline{A} = 0$, we have $0 + AB = AB$.

Therefore, the answer is (3) AB.

3. Final Answer

1. (1) G2C

2. (2) Second generation, fourth generation, third generation, third generation

3. (3) Dot matrix printer

4. (2) a and b

5. (1) 1111011, 173, 7B

6. (3) 1000010 1000001 1000100

7. (4) $2^{35}$ bit

8. (3) AB