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Practice Examples and Dumps & Tips for 2022 Latest 201-450 Valid Tests Dumps
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NEW QUESTION 38
A web application server contains 64GB of RAM and two swap partitions on normal hard disk drives, each with a size of 64 GB. Within the last month, the average number of user sessions on this server has grown by 20 percent. At the same time, the average usage of RAM increased from 65 to 75 percent, while the swap space is almost not used at all. It is expected that the number of user sessions will continue to increase by about 15 to 20 percent each month. Which of the following reactions would be appropriate in response to these observations? (Choose two.)
- A. Delay any hardware upgrade until there is a significant consumption of swap space to ensure an efficient usage of the available hardware
- B. Create a RAID 1 device on the two swap partitions to avoid data loss in case swap space has to be used in the future
- C. Consider the installation of an additional application server to distribute the load if the expected growth continues over several months
- D. Move the web application's scripts and content a ram disk in order to ensure fast access and to avoid the need for swap space
- E. Update the hardware to increase the amount of available RAM to avoid using swap space
Answer: C,E
NEW QUESTION 39
Which commands are used to load modules into the Linux kernel? (Choose TWO correct answers.)
- A. probemod
- B. kernload
- C. modprobe
- D. loadmod
- E. insmod
Answer: C,E
NEW QUESTION 40
Which of the following properties should be recorded in order to monitor the quality of a network link? (Choose two.)
- A. Number of IPv4 and IPv6 packets
- B. Effective Latency
- C. Number of nodes using the link
- D. Bandwidth in both directions
- E. Number of used TCP ports
Answer: B,D
NEW QUESTION 41
CORRECT TEXT
Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.)
Answer:
Explanation:
lsof, /usr/bin/lsof
NEW QUESTION 42
On a Linux node with multiple active networks interfaces, each having a default route to the Internet, which default route is preferred?
- A. The default route with the lowest TTL value
- B. The default route with the highest TTL value
- C. The default route with the highest metric value
- D. The default route with the lowest metric value
- E. The default route with the highest MTU value
Answer: D
NEW QUESTION 43
After the downloading patch-4.6.4.xz from http://kernel.org, what are the next steps to prepare the build of a version 4.6.4 Linux kernel? (Choose two.)
- A. Apply the patch file to the kernel source directory containing kernel version 4.6.3
- B. Uncompress the file using xzto get the uncompressed patch file
- C. Apply the patch file to the kernel source directory containing kernel version 4.6.0
- D. Use patchto apply the uncompressed patch file to the source directory of any previous kernel version
- E. Uncompress the file and move the resulting directory to /usr/src/linux
Answer: B,D
NEW QUESTION 44
If all of the following files and/or symlinks exist in a SysV-init runlevel directory, which of the following will be executed first when booting the system directly into the runlevel?
- A. PRE-S99lpi
- B. S99lpi
- C. K99lpi
- D. S99a-lpi
- E. S98lpi
Answer: E
NEW QUESTION 45
What information is found in the following excerpt from the file /proc/mdstat? (Choose two.)
- A. The information [UU_] means, that the raid is missing one disk and is not fully redundant
- B. The spare disk /dev/sda1 is used to restore full redundancy after the current recovery
- C. 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
- D. One of the disks in /dev/md0 has failed and a spare disk is used to recreate full redundancy
- E. 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
Answer: A,D
NEW QUESTION 46
Which command will report information on memory usage, paging and block input/output?
- A. free
- B. memshow
- C. ps
- D. top
- E. vmstat
Answer: E
NEW QUESTION 47
The following is an excerpt from the output of tcpdump -nli eth1:
Which network service or protocol was used?
- A. DNS
- B. HTTP
- C. FTP
- D. SSH
- E. DHCP
Answer: C
NEW QUESTION 48
Which command is used to make an exact copy, at a single point in time, of a logical volume while still allowing the original logical volume to be updated?
- A. lvcclone
- B. lvm2
- C. lvcreate
- D. lvsnap
- E. lvsnapshot
Answer: C
NEW QUESTION 49
CORRECT TEXT
The users of the local network complain that name resolution is not fast enough. Enter the command, without the path or any options, that shows the time taken to resolve a DNS query.
Answer:
Explanation:
dig, time dig, time host, time nslookup
NEW QUESTION 50
In the output of sar -b, what does tps stand for?
- A. Total data per second
- B. Transfers per second
- C. Traffic per second
- D. Terrabyte per second
- E. Terrabit per second
Answer: B
NEW QUESTION 51
Due to extreme system use, a Linux system requires some additional swap space. To initialize 5 GB of additional swap space, which combination of commands should be used?
- A. touch -5G /tmp/swapfile; swapon /tmp/swapfile
- B. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swapon /tmp/swapfile
- C. mkswap /tmp/swapfile 512000; swapon /tmp/swapfile
- D. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile;
swapon /tmp/swapfile - E. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile;
mount /tmp/swapfile
Answer: D
NEW QUESTION 52
What information does the file modules.dep provide?
- A. A list of devices and their module name.
- B. A list of modules trusted by the installed kernel.
- C. A list of modules the kernel needs to run.
- D. A list of all modules, compiled or not, that are available to the kernel.
- E. A list of all compiled modules and their dependencies.
Answer: E
NEW QUESTION 53
CORRECT TEXT
A database application requires a maximum shared memory segment (shmmax) of 2GB (2147483648 Bytes). Which configuration file should be modified to set this kernel parameter permanently? (Specify the full name of the file, including path.)
Answer:
Explanation:
/etc/sysctl.conf
NEW QUESTION 54
Under which of the following circumstances would the command ping output the string (DUP!)?
- A. When the host being sent ICMP packets is on a different network.
- B. When the ICMP packets are send to a broadcast address and multiple hosts respond.
- C. When the host sending the ICMP packet is the same host as the one receiving the ICMP packets.
- D. When the router responds to the ICMP packet in addition to the host receiving the ICMP packets.
Answer: B
NEW QUESTION 55
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