We are given a list of multiple-choice questions and need to choose the correct answer for each. The questions cover topics such as coding systems, number systems, computer memory, storage devices, network types/topologies, and code types.

1. Problem Description

We are given a list of multiple-choice questions and need to choose the correct answer for each. The questions cover topics such as coding systems, number systems, computer memory, storage devices, network types/topologies, and code types.

2. Solution Steps

Let's address each question one by one:

Question 4: Which coding system includes only coding systems used to represent 5, A, and e?

The options are:

(1) BCD, ASCII, EBCDIC

(2) ASCII, EBCDIC, Unicode

(3) BCD, Unicode, EBCDIC

(4) BCD, Unicode, ASCII

ASCII (American Standard Code for Information Interchange) is a standard character encoding. BCD (Binary Coded Decimal) is a way to represent decimal numbers in binary. EBCDIC (Extended Binary Coded Decimal Interchange Code) is another character encoding. Unicode is a character encoding standard. ASCII, EBCDIC, and Unicode can all represent 5, A, and e. BCD represents only numeric data. The question asks to list coding systems used to represent these characters.

So, (2) is the best answer.

Question 5: Correct order of Least Significant Digit (LSD) and Most Significant Digit (MSD) of 50.3580?

In the number 50.3580, the MSD is 5 and the LSD is

0. The order is LSD, MSD so it will be 0,

5. So, (1) is the correct answer.

Question 6: Which answer is equal to 4A in hexadecimal?

We need to convert $4A_{16}$ to decimal, octal, and binary to compare with the given options.

$4A_{16} = (4 \times 16^1) + (10 \times 16^0) = 64 + 10 = 74_{10}$

(1) $75_{10}$

(2) $72_8$

(3) $74_{10}$

(4) $1000111_2$

$72_8 = (7 \times 8^1) + (2 \times 8^0) = 56 + 2 = 58_{10}$

$1000111_2 = 64 + 4 + 2 + 1 = 71_{10}$

So, $4A_{16} = 74_{10}$. Thus, option (3) is correct.

Question 7: Arrange $1000110_2, 60_8, 50, 3A_{16}$ in descending order.

First, convert all numbers to decimal:

$1000110_2 = 2^6 + 2^2 + 2^1 = 64 + 4 + 2 = 70_{10}$

$60_8 = (6 \times 8^1) + (0 \times 8^0) = 48_{10}$

$50 = 50_{10}$

$3A_{16} = (3 \times 16^1) + (10 \times 16^0) = 48 + 10 = 58_{10}$

So, the numbers in decimal are 70, 48, 50,

5

8. Descending order is 70, 58, 50,

4

8. Corresponding to the original format, this is $1000110_2, 3A_{16}, 50, 60_8$.

So, option (4) is correct.

Question 8: Which answer is equal to 2 GB?

1 GB = $2^{10}$ MB = $2^{20}$ KB = $2^{30}$ Bytes = $2^{33}$ bits

2 GB = $2 \times 2^{10}$ MB = $2 \times 2^{20}$ KB = $2 \times 2^{30}$ Bytes = $2 \times 2^{33}$ bits = $2^{31}$ bytes

(1) $2 \times 2^{10}$ MB = $2^{11}$ MB = 2 GB

(2) $4 \times 2^{12}$ KB = $2^2 \times 2^{12}$ KB = $2^{14}$ KB. Also, 2 GB is $2 * 2^{20}$ KB = $2^{21}$ KB, not $2^{14}$ KB.

(3) $2^{30}$ Byte

(4) $2^{35}$ bits

Thus, option (1) is equivalent to 2 GB.

Option (3) $2^{30}$ Bytes is 1GB, not 2 GB.

Question 9: What is included only optical media data storage devices?

(1) Digital Versatile Disk (DVD), Compact Disk (CD), Blue-Ray

(2) Digital Versatile Disk (DVD), Hard Disk, Blue-Ray

(3) Hard Disk, Floppy Disk, Magnetic Tape

(4) None of above

DVD, CD, and Blue-Ray are optical storage devices. Hard disks, floppy disks, and magnetic tapes are magnetic storage devices.

So, option (1) is correct.

Question 10: Network type and topology based on the diagram.

Based on the diagram, it shows all devices connected to a common cable or line. This is the BUS topology. Since all computers are in one office, it is a Local Area Network (LAN).

So, Local Area Network and Bus Topology (option 4) is the answer.

Question 11: Type of code in the backside page of a book.

The image depicts a QR code. QR codes typically lead to a web address or other online information.

Therefore, option (4) is the correct answer: QR Code → a web address of a good.

3. Final Answer

Question 4: (2) ASCII, EBCDIC, Unicode

Question 5: (1) 0,5

Question 6: (3) 7410

Question 7: (4) 10001102, 3A16, 50, 608

Question 8: (1) 2x210 MB

Question 9: (1) Digital Versatile Disk (DVD), Compact Disk (CD), Blue-Ray

Question 10: (4) Local Area Network and Bus Topology

Question 11: (4) QR Code → a web address of a good