Download System Diagnostics and Troubleshooting Exam and more Exams Technology in PDF only on Docsity!
Troubleshooting Exam
Question 1. Which troubleshooting principle involves breaking down a complex problem into smaller parts to identify the cause? A) Divide and conquer B) Bottom-up approach C) Top-down approach D) Random testing Answer: A Explanation: The "divide and conquer" principle involves breaking a complex problem into smaller, manageable parts to systematically identify the root cause. Question 2. Why is maintaining detailed documentation during troubleshooting important? A) To track progress and facilitate future diagnosis B) To replace the need for testing C) To reduce the need for customer communication D) To avoid performing backups Answer: A Explanation: Documentation helps track actions, findings, and outcomes, which aids in future troubleshooting and ensures accountability. Question 3. Which statement best differentiates symptoms from root cause?
Troubleshooting Exam
A) Symptoms are the underlying issue; root cause is the observable problem B) Symptoms are observable problems; root cause is the fundamental reason for the problem C) Symptoms and root cause are always the same D) Symptoms are irrelevant in troubleshooting Answer: B Explanation: Symptoms are the observable indications of a problem, while the root cause is the fundamental underlying issue causing those symptoms. Question 4. Which diagnostic tool is used to interpret POST codes during system startup? A) Multimeter B) POST card C) Network analyzer D) Disk cleanup utility Answer: B Explanation: POST cards are hardware diagnostic tools that interpret POST codes during the system's Power-On Self-Test, helping identify hardware issues. Question 5. Which utility would you use to view system-wide event logs for troubleshooting software issues?
Troubleshooting Exam
B) To test NIC functionality by looping outgoing signals back to the network interface C) To reset BIOS settings D) To check power supply voltage Answer: B Explanation: Loopback plugs are used to test the network interface card's (NIC) functionality by looping signals internally. Question 8. In system architecture, what does the OS kernel primarily manage? A) User interface and application programs B) Hardware communication and core system functions C) File system organization only D) Network routing exclusively Answer: B Explanation: The OS kernel manages hardware communication, core system functions, and provides essential services for the entire operating system. Question 9. Which component of the system architecture is responsible for translating high-level commands into hardware-specific signals? A) Device driver B) BIOS firmware
Troubleshooting Exam
C) Operating system kernel D) Application software Answer: A Explanation: Device drivers translate high-level OS commands into hardware- specific instructions, enabling proper hardware operation. Question 10. Which symptom is most indicative of CPU overheating? A) Blue Screen of Death (BSOD) with specific error code B) System freezes or slow response times under load C) No display on monitor D) External storage drive not recognized Answer: B Explanation: CPU overheating often causes system freezes, crashes, or performance degradation, especially during high CPU loads. Question 11. Which diagnostic tool is most suitable for testing RAM modules for errors? A) chkdsk B) Memtest86+ C) Disk Cleanup D) Device Manager
Troubleshooting Exam
Explanation: Failing HDDs often cause slow read/write speeds, boot issues, or data access errors. Question 14. Which SMART status attribute indicates a drive with impending failure? A) "Passed" status without errors B) "Reallocated Sectors Count" increasing significantly C) "Temperature" within normal range D) "Power-On Hours" decreasing Answer: B Explanation: An increasing number of reallocated sectors suggests the drive is experiencing failures and may soon fail completely. Question 15. Which tool is used to repair file system errors on a Windows partition? A) chkdsk B) fsck C) defrag D) format Answer: A
Troubleshooting Exam
Explanation: chkdsk scans and repairs logical file system errors on NTFS or FAT partitions in Windows. Question 16. What does a RAID array failure typically indicate? A) Hard drive malfunction or misconfiguration causing data redundancy issues B) Power supply failure C) Network connectivity problem D) Operating system corruption Answer: A Explanation: RAID failures often result from drive malfunctions or misconfigurations, compromising data redundancy or performance. Question 17. How does a corrupted CMOS battery affect a motherboard? A) Causes BIOS settings to revert to defaults or lose configuration B) Prevents the OS from booting C) Stops USB devices from functioning D) Causes overheating Answer: A Explanation: A failing CMOS battery causes BIOS settings, including date/time, to reset, impacting system stability.
Troubleshooting Exam
A) Check for paper jams and verify driver installation B) Reboot the computer immediately C) Replace the printer’s power cord D) Disable the printer in Device Manager permanently Answer: A Explanation: Common issues like paper jams or driver problems are typical causes of printer malfunctions and should be checked first. Question 21. When troubleshooting display issues, what does flickering on the monitor often indicate? A) Loose or damaged video cable, or driver issues B) Faulty keyboard C) Hard drive failure D) Network problem Answer: A Explanation: Flickering can be caused by loose or damaged video cables, outdated or corrupt graphics drivers, or monitor hardware issues. Question 22. Which component is most likely at fault if the keyboard and mouse are not recognized during startup? A) USB port or driver issues
Troubleshooting Exam
B) Power supply failure C) Hard drive malfunction D) CPU overheating Answer: A Explanation: Recognition issues often stem from faulty USB ports or outdated/corrupted drivers for input devices. Question 23. How can you verify the power supply unit (PSU) is functioning properly? A) Use a paper clip to perform a paper clip test or measure voltages with a multimeter B) Check the hard drive SMART status C) Run Memtest86+ D) Boot into safe mode and disable all drivers Answer: A Explanation: The paper clip test and multimeter voltage checks are common methods to verify PSU functionality. Question 24. Which symptom suggests a failing CPU cooler or inadequate cooling? A) System shutdowns during high CPU usage
Troubleshooting Exam
C) Reinstall the application D) Update network drivers Answer: A Explanation: System Restore reverts system files and settings to a previous working state, often resolving boot loop issues. Question 27. Which log file contains information about system and application errors in Windows? A) Event Viewer logs B) Hosts file C) Boot.ini D) System32 folder Answer: A Explanation: Event Viewer logs store detailed records of system, application, and security events, crucial for troubleshooting errors. Question 28. What is a common symptom of driver conflicts in Windows? A) Application crashes or system instability B) No network connection C) Slow disk read speeds only D) Increased battery life
Troubleshooting Exam
Answer: A Explanation: Driver conflicts can cause application crashes, BSODs, or system freezes due to incompatible or corrupt drivers. Question 29. Which Windows feature allows rolling back to a previous driver version? A) Device Manager's Roll Back Driver option B) Disk Cleanup C) Windows Firewall D) Windows Defender Answer: A Explanation: Device Manager provides a "Roll Back Driver" option to revert to a previously functioning driver version. Question 30. Which malware symptom involves unexpected pop-ups and redirection to malicious sites? A) Malware infection or adware presence B) Hardware failure C) Network congestion D) Operating system corruption Answer: A
Troubleshooting Exam
Question 33. Which command can be used to release and renew IP address configuration? A) ipconfig /release and ipconfig /renew B) netstat - a C) ping - t D) tracert Answer: A Explanation: ipconfig /release releases current DHCP lease, and ipconfig /renew requests a new IP address from the DHCP server. Question 34. Which network utility provides information about active TCP/IP connections? A) netstat B) nslookup C) ping D) ipconfig Answer: A Explanation: netstat displays active TCP/IP connections, listening ports, and network statistics.
Troubleshooting Exam
Question 35. What does the command "tracert" do? A) Traces the route packets take to reach a destination host B) Checks DNS records C) Tests network latency only D) Displays network adapter status Answer: A Explanation: tracert traces the path and measures the latency of each hop to a destination, useful for diagnosing network routing issues. Question 36. Which device is most critical for connecting a local network to the internet? A) Router B) Switch C) Modem D) Hub Answer: C Explanation: The modem modulates and demodulates signals between the local network and the ISP, enabling internet connectivity. Question 37. When troubleshooting Wi-Fi signal issues, what is one of the first steps?
Troubleshooting Exam
C) nslookup D) netstat Answer: A Explanation: ipconfig /all displays detailed network configuration, including IP addresses, helping identify conflicts. Question 40. What is the purpose of NAT in routers? A) To translate private IP addresses to a public IP for internet access B) To block all incoming connections C) To assign static IP addresses D) To encrypt network traffic Answer: A Explanation: NAT (Network Address Translation) enables multiple devices on a private network to share a single public IP address for internet access. Question 41. Which troubleshooting step is recommended if a user cannot connect to a VPN? A) Verify VPN client configuration and network connectivity B) Reinstall the operating system C) Replace the network cable D) Disable the network adapter permanently
Troubleshooting Exam
Answer: A Explanation: Checking VPN client settings and network status helps identify configuration or connectivity issues. Question 42. Which backup method involves copying only files that have changed since the last backup? A) Incremental backup B) Full backup C) Differential backup D) System image backup Answer: A Explanation: Incremental backups save only data modified since the last backup, saving time and storage. Question 43. Why is regular data backup important? A) To prevent data loss in case of hardware failure or malware attack B) To improve system speed C) To reduce power consumption D) To increase storage capacity automatically Answer: A
