INFORMATION TECHNOLOGY (IT)
Information Technology (IT)
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
او۔ایس۔آئی ماڈل میں کتنی پرتیں ہیں؟
- 5
- 6
- 7
- 8
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Explanation
The OSI (Open Systems Interconnection) model has seven layers
- Layer 7: Application Layer – User interface and network applications (e.g., HTTP, FTP).
- Layer 6: Presentation Layer – Data formatting, encryption, and compression.
- Layer 5: Session Layer – Managing sessions between applications.
- Layer 4: Transport Layer – End-to-end connections, flow control, and segmentation (e.g., TCP, UDP).
- Layer 3: Network Layer – Logical addressing and routing (e.g., IP).
- Layer 2: Data Link Layer – Physical addressing (MAC addresses) and error detection.
- Layer 1: Physical Layer – Raw data transmission over physical media (cables, radio waves)
Last updated 15-feb-2026
درج ذیل میں سے کون سا ویب ڈیزائن ٹول نہیں ہے؟
- Oracle
- WordPress
- Figma
- Wix
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Explanation
- Web design tools are used to create and design websites.
- WordPress, Figma, and Wix are used for web design and development.
- Oracle is a database management company/system, not a design tool.
Last verified on 11-04-2026
دو ہائی بِٹس (1 اور 1) کو بائنری میں جمع کرنے کا نتیجہ کیا ہوگا؟
- 11
- 00
- 10
- None of these
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Explanation
Binary system uses only 0 and 1
0 + 0 = 0
0 + 1 = 1
1 + 1 = 10 (carry 1)
Last verified 11-04-2026
- Store more files than HDDs
- Connect the SSD via USB
- Provides faster data transfer and lower latency
- Cools the SSD automatically
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Explanation
NVMe (Non-Volatile Memory Express) is a protocol for accessing SSDs via PCIe interface.
It is designed to maximize speed and reduce latency compared to SATA SSDs.
NVMe allows parallel processing of commands, improving performance.
ایک پروگرام کو کیسا ہونا چاہیے؟
- Random
- Sequential
- Parallel only
- Circular
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Explanation
A program executes instructions in a logical sequence to achieve a task.
Sequential execution ensures each step is performed in the correct order.
- 1 terabyte
- 1 gigabyte
- 1 megabyte
- Both A and B
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Explanation
The size of information in the computer is measured in:
- 1024 kilobytes (KB) is equal to 1 megabyte (MB).
- One Megabyte (MB) = 1024 Kilobytes (KB
- One Gigabyte (GB) = 1024 Megabytes MB
- One Terabyte (TB)= 1024 gigabytes (GB).
قابل فہم شکل میں ترتیب دیا گیا ڈیٹا کیا کہلاتا ہے؟
- Program
- Software
- Information
- Alphanumeric data
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Explanation
- Information: Data processed and organized to be meaningful.
- Data Processing: The action of converting raw data into meaningful information.
- Tabulation: A specific, structured form of arranging data in rows and columns.
- By length only
- By character ASCII values in order
- Randomly
- By reversing strings
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Explanation
In C++, strings are compared lexicographically using the <, >, == operators.
Comparison proceeds character by character from left to right.
Each character is evaluated using its ASCII (or Unicode) value.
- They are irrelevant for large input sizes
- They are always zero
- They depend on memory
- They improve performance
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Explanation
Big-O notation measures the growth rate of an algorithm as input size increases.
Constants do not affect growth rate for large inputs, so they are ignored.
For example, O(3n) is simplified to O(n) in Big-O terms.
This helps focus on scalability rather than exact runtime.
- Mobile devices are slower
- Ensures optimal display on small screens before scaling up
- Desktop always loads first
- Reduces CSS file size
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Explanation
- Mobile-first design starts with styles for small screens and adds enhancements for larger screens.
- This approach ensures the website is usable on mobile devices, which have limited space.
- Media queries are then used to scale layouts for tablets and desktops.
