Computer Fundamentals- Day 20

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Question 1

In a real-world security breach, which scenario BEST represents a loss of integrity rather than confidentiality or availability?

  • An attacker secretly copies customer records without changing anything

  • A ransomware attack encrypts all data and locks out employees

  • A hacker modifies product price values in the company database

  • Users are unable to access emails due to network congestion

Question 2

Which of the following Situation Most resemble a backdoor attack from a practical standpoint?

  • An attacker uses brute force to guess a system password

  • An attacker fakes their MAC address to join a secure Wi-Fi

  •  A free photo editor installs hidden remote-access malware

  • Someone listens to a network session using a sniffing tool

Question 3

A company stores its employees’ private details. Which action BEST ensures confidentiality rather than integrity or availability?

  • Implement data backups with daily snapshots

  •  Use role-based access so only HR can open employee files

  •  Configure checksums to detect accidental modification

  • Install redundant servers to prevent downtime

Question 4

During an investigation you detect packets captured using Wireshark from an open Wi-Fi network. Which attack MOST likely happened?

  • Spoofing

  • Phishing

  •  Polymorphic malware attack

  • Eavesdropping

Question 5

Which of the following BEST describes a polymorphic cyber attack in practice?

  • Malware that changes its code signature every time it replicates

  • Malware hidden in a USB drive firmware

  •  Malware delivered via phishing emails

  • Malware that encrypts data and asks for ransom

Question 6

In a secure organization, which situation MOST accurately shows a failure of system integrity?

  • The server shuts down because too many users logged in

  • A software update causes the system to crash unexpectedly

  • A user logs in without MFA

  • A hacker alters the OS kernel to bypass authentication

Question 7

A computer has strong passwords and antivirus installed. However, the user joins a public coffee-shop Wi-Fi and logs into banking sites. Which attack are they MOST vulnerable to?

  • Backdoor Trojan execution

  • Man-in-the-middle interception / eavesdropping

  • DOS attack

  • Malware injection

Question 8

A barcode reader converts black–white patterns into usable numerical data. Based on device classification, which statement is MOST accurate?

  • It is an input device because it sends coded data to the system

  • It is an output device that projects data onto screens

  •  It functions as a processing device before sending data

  • It acts as both input and output since it displays scanned results

Question 9

A touchscreen is considered both an input and an output device. Which feature MOST supports its role as an input device?

  •  Ability to produce sound feedback

  •  Ability to display HD graphics

  • Ability to respond to gestures and touches

  •  Ability to show virtual keyboards

Question 10

Which of the following scenarios BEST demonstrates social engineering rather than phishing, malware, or spoofing?

  • A fake email pretending to be from a bank asking for login details

  • A USB drive dropped intentionally outside an office building

  •  An app installed secretly modifies system registry entries

  •  A website steals login details by pretending to be the original

There are 10 questions to complete.

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