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Developer for the Java Platform Enterprise Edition
5 Practice Exam
Question 1. Which Windows tool allows you to analyze system startup and shutdown events to identify boot delays? A) Event Viewer B) Group Policy Editor C) Device Manager D) Task Scheduler Answer: A Explanation: Event Viewer records detailed logs, including startup and shutdown events, which help in identifying boot delays. Question 2. In Linux, which log file typically contains kernel ring buffer messages useful for hardware troubleshooting? A) /var/log/auth.log B) /var/log/dmesg C) /var/log/secure D) /var/log/messages Answer: B Explanation: The dmesg log file contains kernel ring buffer messages, useful for hardware-related troubleshooting. Question 3. What is the primary role of the Windows Registry in system configuration? A) To manage user profiles B) To store system and application settings C) To handle network connections
Developer for the Java Platform Enterprise Edition
5 Practice Exam
D) To monitor system performance Answer: B Explanation: The Windows Registry is a hierarchical database that stores configuration settings for the OS and applications. Question 4. Which command repairs a corrupted boot sector on a Windows system? A) chkdsk B) diskpart C) bootrec /fixboot D) sfc /scannow Answer: C Explanation: The bootrec /fixboot command specifically addresses corrupted boot sector issues. Question 5. A user cannot access a shared folder due to permission issues. What should you check first in Windows? A) BIOS settings B) NTFS permissions C) System logs D) Device drivers Answer: B Explanation: NTFS permissions control access to files/folders on NTFS volumes. Question 6. Which Linux command lists all running processes with detailed resource usage?
Developer for the Java Platform Enterprise Edition
5 Practice Exam
Question 9. In Linux, which file contains authentication-related log entries? A) /var/log/syslog B) /var/log/auth.log C) /var/log/kern.log D) /var/log/boot.log Answer: B Explanation: /var/log/auth.log stores authentication and authorization logs. Question 10. What does a “Blue Screen of Death” (BSOD) usually indicate in Windows systems? A) Hardware failure or driver issues B) Successful startup C) Completed update D) Network congestion Answer: A Explanation: BSODs often result from hardware failures or driver conflicts. Question 11. When troubleshooting high CPU usage on Linux, which command provides a snapshot of current system resource usage? A) df B) free C) top D) chmod Answer: C
Developer for the Java Platform Enterprise Edition
5 Practice Exam
Explanation: The top command displays real-time CPU, memory, and process information. Question 12. Which Windows feature helps protect the system by requesting administrative approval for certain actions? A) Device Manager B) UAC (User Account Control) C) Task Scheduler D) Disk Cleanup Answer: B Explanation: UAC prompts users for administrative approval to enhance security. Question 13. What is the best tool to capture and analyze live network traffic in detail? A) Wireshark B) Notepad C) PuTTY D) Paint Answer: A Explanation: Wireshark captures and analyzes live network packets. Question 14. Which tool can be used to diagnose DNS propagation and resolution issues? A) netstat B) nslookup C) ping
Developer for the Java Platform Enterprise Edition
5 Practice Exam
C) Device Manager D) Services Answer: B Explanation: Task Scheduler allows users to automate tasks based on triggers and conditions. Question 18. What is the function of a VLAN in network infrastructure? A) Distributes IP addresses B) Segments a network logically C) Encrypts data D) Provides DNS services Answer: B Explanation: VLANs logically segment a network to improve management and security. Question 19. Which log file on Linux would you check for web server errors on Apache? A) /var/log/apache2/error.log B) /var/log/messages C) /var/log/dmesg D) /var/log/maillog Answer: A Explanation: /var/log/apache2/error.log is the default Apache error log file. Question 20. What is a common cause for a DHCP client not receiving an IP address? A) Duplicate MAC address
Developer for the Java Platform Enterprise Edition
5 Practice Exam
B) DHCP server offline C) High CPU usage D) Incorrect DNS Answer: B Explanation: If the DHCP server is down, clients cannot obtain IP addresses. Question 21. Which Hyper-V issue could cause slow VM disk performance? A) Low network bandwidth B) Datastore latency C) Missing device drivers D) Disabled firewall Answer: B Explanation: Storage/datastore latency can significantly slow VM disk operations. Question 22. In Active Directory, what often causes replication failures between domain controllers? A) DNS misconfiguration B) Disabled firewall C) Outdated user accounts D) Excessive disk space Answer: A Explanation: Active Directory replication relies heavily on DNS for locating domain controllers. Question 23. What Windows command displays all current TCP/IP network connections?
Developer for the Java Platform Enterprise Edition
5 Practice Exam
Question 26. What tool would you use to monitor real-time performance counters in Windows? A) Device Manager B) Performance Monitor (Perfmon) C) Notepad D) Control Panel Answer: B Explanation: Perfmon allows real-time monitoring of system performance metrics. Question 27. Which SQL Server issue can result in slow query performance? A) Missing indexes B) High network latency C) Full disk D) Old backups Answer: A Explanation: Missing indexes can force SQL Server to perform full table scans, slowing performance. Question 28. How can you verify that a Group Policy has been successfully applied to a Windows client? A) Run gpupdate B) Check with gpresult C) Restart the computer D) Open Device Manager Answer: B
Developer for the Java Platform Enterprise Edition
5 Practice Exam
Explanation: gpresult provides a report of applied Group Policies. Question 29. What is the purpose of a Change Advisory Board (CAB)? A) Monitor network traffic B) Review and approve changes to IT systems C) Create user accounts D) Backup data Answer: B Explanation: The CAB reviews and approves proposed IT changes to minimize risk. Question 30. Which Linux file contains user account information? A) /etc/shadow B) /etc/passwd C) /etc/group D) /etc/login.defs Answer: B Explanation: /etc/passwd lists user accounts and basic information. Question 31. Which component is responsible for translating domain names to IP addresses? A) DHCP B) DNS C) ARP D) SNMP
Developer for the Java Platform Enterprise Edition
5 Practice Exam
D) Forwarded Events Answer: B Explanation: The System log records service startup and shutdown events. Question 35. What is the main function of the Fishbone Diagram in root cause analysis? A) Visualize possible causes of a problem B) Monitor network traffic C) Schedule tasks D) Encrypt data Answer: A Explanation: The Fishbone Diagram helps identify and organize potential causes of a problem. Question 36. Which type of firewall rule could block legitimate remote desktop access? A) Outbound DNS rule B) Inbound RDP rule C) Outbound HTTP rule D) Inbound SNMP rule Answer: B Explanation: Blocking inbound RDP traffic prevents remote desktop connections. Question 37. What is the main function of “dig” in DNS troubleshooting? A) Captures network packets B) Queries DNS servers for information
Developer for the Java Platform Enterprise Edition
5 Practice Exam
C) Tests bandwidth D) Opens a web browser Answer: B Explanation: dig queries DNS servers for detailed DNS information. Question 38. What does inode exhaustion mean for a Linux filesystem? A) No more disk space B) No more files can be created C) High CPU usage D) Filesystem is read-only Answer: B Explanation: Inode exhaustion means the filesystem cannot track new files, preventing their creation. Question 39. In Windows, which permission allows users to modify but not delete files? A) Full Control B) Modify C) Read D) Write Answer: B Explanation: Modify allows changes but not deletion unless combined with Delete permission. Question 40. What information does “ipconfig /all” provide in Windows? A) List of all running processes
Developer for the Java Platform Enterprise Edition
5 Practice Exam
A) Insufficient datastore space B) Too many network connections C) High CPU usage D) Old snapshots Answer: A Explanation: If the datastore is full, VMs cannot be powered on. Question 44. Which tool can capture packets for protocol analysis in Linux? A) tcpdump B) wget C) curl D) ifconfig Answer: A Explanation: tcpdump captures and analyzes network packets in real-time. Question 45. In Exchange, what can cause emails to be stuck in the outbox? A) DNS issue B) Message size limit exceeded C) Low CPU D) Empty mailbox Answer: B Explanation: Exceeding the message size limit prevents emails from being sent.
Developer for the Java Platform Enterprise Edition
5 Practice Exam
Question 46. When troubleshooting a failed SSH connection, which log would you check on the Linux server? A) /var/log/auth.log B) /var/log/boot.log C) /var/log/messages D) /var/log/dmesg Answer: A Explanation: /var/log/auth.log contains authentication attempts, including SSH. Question 47. Which PowerShell command lists all installed Windows services? A) Get-Process B) Get-Service C) Get-EventLog D) Get-Command Answer: B Explanation: Get-Service displays all installed Windows services. Question 48. What does the “tracert” command do in Windows? A) Checks disk usage B) Traces the path to a remote host C) Monitors CPU usage D) Lists users Answer: B
Developer for the Java Platform Enterprise Edition
5 Practice Exam
D) Control Panel Answer: B Explanation: Perfmon can log and review performance data over time. Question 52. What can cause a “permission denied” error when accessing a file in Linux? A) Insufficient user/group permissions B) High CPU usage C) Full disk D) Network latency Answer: A Explanation: File access is determined by user and group permissions. Question 53. Which network layer is responsible for end-to-end communication and error recovery? A) Data Link B) Network C) Transport D) Application Answer: C Explanation: The Transport layer (Layer 4) handles end-to-end connections and error recovery. Question 54. Which protocol is primarily responsible for automatic IP address assignment? A) DNS B) DHCP
Developer for the Java Platform Enterprise Edition
5 Practice Exam
C) SNMP
D) ICMP
Answer: B Explanation: DHCP automatically assigns IP addresses to clients. Question 55. In Linux, how do you list all files, including hidden ones, in a directory? A) ls B) ls - a C) ls - l D) ls - h Answer: B Explanation: ls - a lists all files, including hidden files (those starting with a dot). Question 56. What is a likely cause for “database locking” in SQL Server? A) Multiple simultaneous write operations B) Low memory C) High CPU usage D) Network failure Answer: A Explanation: Concurrent write operations can cause locked records/tables. Question 57. Which protocol operates at the Transport layer of the OSI model? A) IP
