Leading 201-450 Exam Study Guides With New Update Exam Questions

Q1. 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

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Q2. After manually compiling and installing a new kernel, what has to be done regarding the initramfs?

A. To initramfs is independent of the kernel and should not be modified unless the hardware configuration of the machine has changed

B. Since the initramfs contains kernel modules, a new initramfs must be built for the new kernel

C. During the compilation of the Linux kernel, a new initramfs is built automatically. The new initramfs only needs to be installed

D. The system should be restarted since the initramfs reconfigures itself for the new kernel during the startup of the system

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Q3. Which file contains the text message that is displayed after logging into the console? (Specify the full name of the file, including path.)

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Q4. What should be done to ensure a client machine uses the recursive nameserver running on the IP address 192.168.1.1 ? (Choose TWO correct answers.)

A. Add nameserver 192.168.0.1 to /etc/resolv.conf.

B. Run route add nameserver 192.168.0.1.

C. Run ifconfig eth0 nameserver 192.168.0.1.

D. Ensure that the dns service is listed in the hosts entry in the /etc/nsswitch.conf file.

E. Run bind add nameserver 192.168.0.1.

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Q5. The following is an excerpt from the output of tcpdump -nli eth1:

13:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.21: Flags [.], ack 1 (truncated)

13:03:17.598624 IP 192.168.5.112.21 > 192.168.123.5.1065: Flags [P.], seq (truncated)

Which network service or protocol was used?

A. FTP

B. HTTP

C. SSH

D. DNS

E. DHCP

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Q6. What command discards unused blocks on a mounted file system in order to support SSD devices? (Specify ONLY the command without any path or parameters.)

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Q7. Which is the main configuration file for the SystemV init process? (Specify the full name of the file, including path.)

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Q8. In which directory tree are files modified when changing kernel parameters using the command sysctl?

A. /sys/kernel/

B. /proc/kernel/

C. /proc/sys/

D. /lib/sys/

E. /sys/proc/

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Q9. What information is found in the following excerpt from the file /proc/mdstat? (Choose two.)

A. One of the disks in /dev/md0 has failed and a spare disk is used to recreate full redundancy

B. The spare disk /dev/sda1 is used to restore full redundancy after the current recovery

C. The information [UU_] means, that the raid is missing one disk and is not fully redundant

D. The device is using version 1.2 metadata to allow LILO and GRUB Legacy to use /dev/md0 as the boot partition. This would not have been necessary with GRUB2

E. The information [3/2] means that 3 RAID disks belong to the array and 2 disks are spare. Together they equal the number of available disks

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Q10. What command will remove a physical volume from a volume group? (Specify ONLY the command without any path or parameters.)

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