Linux+ Certification (2004 Objectives)

1. At boot time, the computer reported that there are problems with inodes and blocks.  Which of the following is the problem and how is it corrected?
A. The boot sector is corrupt and needs to be replaced.
B. The file system has become corrupt and needs to be repaired.
C. The partition table has become corrupt and needs to be repaired.
D. The drive is configured using an improper file system and needs to be reformatted.
Answer: B

2. Which of the following commands will mount a USB flash drive successfully in Linux?
A. mount /dev/sda1 /mnt/usb
B. mount -t usbfs /dev/usb001 /mnt/usb
C. mount /dev/uda1 /mnt/usb
D. mount /dev/hde1 /mnt/usb
Answer: A

3. An administrator who logged in as a standard user needs to kill process 1010 that was started by the root user. Which of the following commands will kill the process?
A. kill 1010
B. su "kill 1010"
C. killall -9 1010
D. su -c "kill 1010"
Answer: D

4. A technician added a PCI network card to a stable Linux server.  The server is now generating I/O errors when the kernel module for the network card is loaded.  Which of the following actions will solve the problem?
A. Disable the power management in the BIOS.
B. Move the network card to another available slot.
C. Reconfigure the network card to use a different IP address.
D. Change the server BIOS setting to disable the network card BIOS.
Answer: B

5. A DHCP server has been added to the network.  The local system has been reconfigured to connect using DHCP. How could an administrator restart network services and test that the interface and the DHCP server are functioning properly?
A. /sbin/route restart; ifconfig lo
B. /bin/netstat -R; ping comptia.org
C. /usr/bin/network restart; ping comptia.org
D. /etc/init.d/network restart; ifconfig eth0
Answer: D

6. Which of the following is supported when creating a Linux VPN (Virtual Private Network)?
A. RC2
B. 3DES
C. chap
D. NTLMv2
Answer: B

7. If /etc/syslog.conf has the following entry:
mail.*         -/var/log/mail.log
Which of the following log events will this line cause to be logged to mail.log?
A. The events generated by a user called ail?
B. The events logged by a program called ail?
C. The events logged to the mail facility at any priority.
D. The events logged from any host that begins with the name mail.
Answer: C

8. Which of the following commands can be used to check for file corruption?
A. md5sum
B. cat -vet
C. checkfile
D. tar --checksum
Answer: A

9. A user wants to know how to set up SSH (Secure Shell) to communicate between systems without requiring passwords.  Which of the following is the BEST way to accomplish this?
A. Use ssh-keygen to generate public-private keys.
B. Disable passwords on specific accounts that will use SSH.
C. Add systems that do not need passwords to the /etc/ssh.hosts file.
D. Use RSH (Remote Shell) rather than SSH because it does not require passwords.
Answer: A

10. Which of the following configurations does cardmgr read at startup on a Linux system?
A. PCI cards
B. USB cards
C. SCSI cards
D. PCMCIA cards
Answer: D

11. After an upgrade of Apache, Web pages are no longer available and are replaced with a default page.  Which of the following files should be edited or replaced to correct the problem?
A. srm.conf
B. httpd.conf
C. xinetd.conf
D. /etc/services
Answer: B

12. Which of the following is a common tool used to determine what services and ports are running on a remote Linux box?
A. arp
B. nmap
C. netstat
D. ifconfig
Answer: B

13. Which of the following commands, when issued from a non-root user, will remove all files from the /tmp directory after prompting the user for the root password?
A. rmdir -rf /tmp/*
B. rm -rf /tmp/* -su
C. su "rm -rf /tmp/*"
D. su -c "rm -rf /tmp/*"
Answer: D

14. Which of the following services needs to be installed on a server to support new diskless client workstations?
A. named and httpd
B. dhcpcd and rexec
C. remoted and dhcpd
D. PXE (Preboot eXecution Environment) and tftpd
Answer: D

15. Which of the following commands can be run to remove all the rules in an iptables table?
A. iptables -L
B. iptables -A
C. iptables -F
D. iptables --delete
Answer: C

16. A user complained that a laptop system seems slow.  Which of the following commands can be used to see what processor was detected on boot?
A. proc
B. POST
C. dmesg
D. cpuinfo
Answer: C

17. The LILO boot configuration needs to be updated to support a new IDE hard drive that was installed. How should this be accomplished?
A. Run "lilo -o /dev/hda"
B. Edit lilo.conf and run "lilo -v -v"
C. Edit lilo.conf and run "liloconf -v -v"
D. Set LILO=/dev/hda and then run "liloconf /dev/hda"
Answer: B

18. A Linux system is configured with a RAID 5 array consisting of six 20GB hard drives.  How much usable storage space is available?
A. 50
B. 80
C. 100
D. 120
Answer: C

19. Which of the following allows for secure remote command line access?
A. SSH (Secure Shell)
B. SSL
C. Telnet
D. Rlogin
Answer: A

20. A technician created a new directory for use by a user "User12".  User12 is unable to create new files or subdirectories within this new directory.  Using the ls command, the technician observes the following:
   drwxr-xr-x       2   root        root        4096   May 24 13:11 dirname
Which of the following is the BEST way to enable User12 to use the directory without letting other users manipulate its content?
A. chmod 700 dirname
B. chown dirname User12
C. chgrp User12 dirname
D. chown User12:User12 dirname
Answer: D

21. Which of the following files contains the key or keys required to login using SSH (Secure Shell) without a password?
A. .ssh/known_keys
B. .ssh/trusted_keys
C. .ssh/allowed_keys
D. .ssh/authorized_keys
Answer: D

22. Which of the following ifconfig commands can be used to assign the IP address 192.168.1.15/24 to the second NIC (Network Interface Card) in a workstation?
A. ifconfig eth1 192.168.1.15 subnet 255.255.255.0
B. ifconfig eth2 192.168.1.15 subnet 255.255.255.0
C. ifconfig eth1 192.168.1.15 netmask 255.255.255.0
D. ifconfig eth2 192.168.1.15 netmask 255.255.255.0
Answer: C

23. Which of the following protocols is used while configuring a Linux workstation to use a connection via a DSL modem?
A. ATM
B. SLIP
C. PPTP
D. PPPoE
Answer: D

24. Which of the following services commonly uses Port 22?
A. FTP
B. DNS
C. SSH (Secure Shell)
D. SMTP
Answer: C

25. A Linux technician accessed the Web server on http://127.0.0.1 with a default install of Apache, and received a orbidden message.  Where can the technician find detailed messages about this problem?
A. error_log
B. httpd_log
C. access_log
D. apache_log
Answer: A

26. After the Linux technician has completed the server configuration documentation, where should this documentation be stored, according to best practice?
A. In a binder, securely stored in an area located near the server
B. In a predetermined secure location on-site, but not in the server room
C. In an approved fire-proof container, located in a secure off-site facility
D. In an office, to be filed and labeled appropriately with the rest of the system documentation
Answer: A

27. Which of the following environment variables specifies the location where user files are stored by default?
A. PATH
B. HOME
C. FILES
D. SHELL
Answer: B

28. A company's mail server is unable to send mail to the domain comptia.org.  Which of the following commands might help determine if their DNS records are correct?
A. dig comptia.org
B. mailtest comptia.org
C. dig -t mx comptia.org
D. dig -t ms comptia.org
Answer: C

29. Which of the following commands is used to search the whole directory structure to locate a specific file, but still can execute other commands while the 'find' command is searching for the file?
A. find / filename &
B. find / -name filename
C. find / -name filename &
D. find filename > background
Answer: C

30. A file with permission set to octet 540 allows which of the following?
A. Read and write permissions to root, and read-only permission to the group. No permission to others.
B. Read and execute permissions to root, and read-only permission to the group. No permission to others.
C. Read and write permissions to the owner, and read-only permission to the group. No permission to others.
D. Read and execute permissions to the owner, and read-only permission to the group. No permission to others.
Answer: D