Computer & Information Technology

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Q190. What is unauthorized malicious entry into a computer system commonly called?

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1. Phishing
2. Hacking
3. Data mining
4. Spoofing
5. Data backup

Answer: B. Hacking

Explanation: Hacking can describe gaining access to or manipulating a system, particularly when unauthorized. Phishing is a narrower social-engineering technique for stealing information by impersonation, while data mining is an analytical technique.

Q189. Which online deception method is used to steal passwords or personal identity details?

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1. Phishing
2. Data encryption
3. Cloud storage
4. Firewall
5. Debugging

Answer: A. Phishing

Explanation: Phishing tricks people into handing over confidential information through messages or fake sites that impersonate trusted organizations. Users should examine sender details and websites before entering credentials or financial information.

Q188. In email, what are the expansions of CC and BCC?

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1. Current Copy and Blind Copy
2. Carbon Copy and Blind Carbon Copy
3. Central Communication and Backup Communication
4. Clear Copy and Backup Carbon Copy
5. Contact Copy and Blind Contact Copy

Answer: B. Carbon Copy and Blind Carbon Copy

Explanation: CC stands for Carbon Copy and BCC for Blind Carbon Copy. CC addressees are typically visible to recipients, whereas BCC addressees remain hidden from other recipients to protect mailing-list privacy.

Q187. Which application is principally used for sending and receiving electronic mail?

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1. Adobe Photoshop
2. Microsoft Word
3. Microsoft Outlook
4. VLC Media Player
5. AutoCAD

Answer: C. Microsoft Outlook

Explanation: Microsoft Outlook is an email and personal information manager supporting messages, contacts and calendars. Photoshop is for digital image editing and VLC plays multimedia content, neither serving as a conventional mail application.

Q186. In an email address, what lies on the two sides of the @ symbol?

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1. Username and password
2. Local name and domain
3. Email and telephone number
4. Sender and receiver
5. Two server names

Answer: B. Local name and domain

Explanation: A standard email address contains a local part, followed by @, then a domain name. The domain identifies the mail-routing destination, while the local part specifies the mailbox within that domain.

Q185. What Excel feature keeps particular rows or columns visible while scrolling?

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1. Headers
2. Freeze Panes
3. Gridlines
4. Active Cell
5. Merge Cells

Answer: B. Freeze Panes

Explanation: Freeze Panes holds selected rows or columns in a fixed screen position while other worksheet content scrolls. This helps users retain context, especially heading rows, within large spreadsheet tables.

Q184. Who is commonly called the father of the computer?

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1. Alan Turing
2. Steve Jobs
3. Bill Gates
4. Charles Babbage
5. John von Neumann

Answer: D. Charles Babbage

Explanation: Charles Babbage conceived the mechanical Difference Engine and the programmable Analytical Engine. His work on calculating machines helped establish ideas central to later general-purpose computer design, earning the familiar historical title.

Q183. Which malware can reproduce itself and travel between systems without a host file?

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1. Virus
2. Worm
3. Trojan
4. Spyware
5. Ransomware

Answer: B. Worm

Explanation: Worms are self-replicating malicious programs capable of propagating through networks. Unlike ordinary file-infecting viruses, they do not have to attach to a separate executable, although they may still exploit security vulnerabilities.

Q182. Which Microsoft program is mainly used to create and edit text documents?

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1. Excel
2. PowerPoint
3. Word
4. Access
5. Photoshop

Answer: C. Word

Explanation: Word contains word-processing features for text, tables, page layout and document formatting. Excel is intended primarily for spreadsheets, Access for databases, and PowerPoint for creating presentations.

Q181. What are the concentric circular recording paths on a hard disk known as?

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1. Sectors
2. Clusters
3. Blocks
4. Tracks
5. Cylinders

Answer: D. Tracks

Explanation: A hard disk divides each platter surface into circular tracks that are split further into sectors. A cylinder groups tracks at the same radius across surfaces, while clusters are file-system allocation units.