Lpi LPI Certifications 201-450 Questions & Answers

• Question 81:

  Which of the following commands will list the IPv4 neighbors of the current system? This includes IP and MAC addresses. (Choose TWO correct answers.)

  A. arp

  B. ifconfig -lv eth0

  C. netstat -al

  D. ip neigh show

  Correct Answer: AD

• Question 82:

  A network client has an ethernet interface (eth0) configured with an IP address in the subnet 192.168.0.0/24. This subnet has a router, with the IP address 192.168.0.1, that connects this subnet to the Internet. What needs to be done on the client to enable it to use the router as its default gateway? (Choose TWO correct answers.)

  A. route add default gw 192.168.0.1 eth0

  B. ifconfig eth0 defaultroute 192.168.0.1

  C. ip route add default via 192.168.0.1 dev eth0

  D. echo defaultroute 192.168.0.1 >> /etc/resolv.conf

  E. route add defaultgw=192.168.0.1 if=eth0

  Correct Answer: AC

• Question 83:

  What is the command to add another IP address (192.168.1.2) to a network interface (eth0) that already has (at least) one IP address in the 192.168.1.0/24 subnet?

  A. ip add addr 192.168.1.2/32 dev eth0

  B. ifconfig eth0 192.168.1.2 netmask 255.255.255.255

  C. ip addr add 192.168.1.2/32 dev eth0

  D. ipconfig eth0 192.168.1.2

  Correct Answer: C

• Question 84:

  Which of the following commands can be used to script interactions with various TCP or UDP services?

  A. ftp

  B. nc

  C. tcpdump

  D. strings

  E. wget

  Correct Answer: B

• Question 85:

  A correctly formatted entry has been added to /etc/hosts.deny to prevent certain clients from connecting to a service but this is having no effect. What could be the cause of this? (Choose TWO correct answers.)

  A. tcpd needs to be sent the HUP signal.

  B. The service needs to be restarted.

  C. The machine needs to be restarted.

  D. There is a conflicting entry in /etc/hosts.allow.

  E. The service does not support tcpwrapper.

  Correct Answer: DE

• Question 86:

  Due to extreme system use, a Linux system requires some additional swap space. To initialize 5GB of additional swap space, which combination of commands should be used?

  A. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; mount /tmp/swapfile

  B. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swapon /tmp/swapfile

  C. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon /tmp/ swapfile

  D. touch -5G /tmp/swapfile; swapon /tmp/swapfile

  E. mkswap /tmp/swapfile 512000; swapon /tmp/swapfile

  Correct Answer: C

• Question 87:

  What action should be performed after increasing the size of a logical volume?

  A. Run vgresize.

  B. Increase the size of the filesystem used for the logical volume.

  C. Run lvresize.

  D. Remount the logical volume.

  Correct Answer: B

• Question 88:

  Which of the following files are used to resolve hostnames to IP addresses? (Choose TWO correct answers.)

  A. /etc/systems

  B. /etc/hosts

  C. /etc/network

  D. /etc/dns.conf

  E. /etc/resolv.conf

  Correct Answer: BE

• Question 89:

  Which of the following is a CD-ROM filesystem standard?

  A. OSI9660

  B. ISO9660

  C. SR0FS

  D. ISO8859

  E. ROM-EO

  Correct Answer: B

• Question 90:

  Which of the following is an example path to a Linux software RAID array?

  A. /dev/raid0

  B. /dev/rd1

  C. /dev/pr0

  D. /dev/md1

  Correct Answer: D