Linux_1-25

1. An administrator accidentally deleted the /boot/vmlinuz file and must resolve the issue before the server is rebooted. Which of the following

commands should the administrator use to identify the correct version of this file?

• A. rpm -qa | grep kernel; uname -a

• B. yum -y update; shutdown -r now

• C. cat /etc/centos-release; rpm -Uvh --nodeps

• D. telinit 1; restorecon -Rv /boot

2. A cloud engineer needs to change the secure remote login port from 22 to 49000. Which of the following files should the engineer modify to

change the port number to the desired value?

• A. /etc/host.conf

• B. /etc/hostname

• C. /etc/services

• D. /etc/ssh/sshd_config

3. A new file was added to a main Git repository. An administrator wants to synchronize a local copy with the contents of the main repository. Which

of the following commands should the administrator use for this task?

• A. git reflog

• B. git pull

• C. git status

• D. git push

4. A Linux administrator needs to redirect all HTTP traffic temporarily to the new proxy server 192.0.2.25 on port 3128. Which of the following

commands will accomplish this task?

• A. iptables -t nat -D PREROUTING -p tcp --sport 80 -j DNAT - -to-destination 192.0.2.25:3128

• B. iptables -t nat -A PREROUTING -p top --dport 81 -j DNAT --to-destination 192.0.2.25:3129

• C. iptables -t nat -| PREROUTING -p top -sport 80 -j DNAT --to-destination 192.0.2.25:3129

• D. iptables -t nat -A PREROUTING -p tcp -dport 80 -j DNAT --to-destination 192.0.2.25:3128

5. Developers have requested implementation of a persistent, static route on the application server. Packets sent over the interface eth0 to

10.0.213.5/32 should be routed via 10.0.5.1. Which of the following commands should the administrator run to achieve this goal?

• A. route -i etho -p add 10.0.213.5 10.0.5.1

• B. route modify ethO +ipv4.routes "10.0.213.5/32 10.0.5.1"

• C. echo "10.0.213.5 10.0.5.1 ethO" > /proc/net/route

• D. ip route add 10.0.213.5/32 via 10.0.5.1 dev eth0

6. A user is asking the systems administrator for assistance with writing a script to verify whether a file exists. Given the following:

#1/bin/bash

filename=$1

<CONDITIONAL>

echo "File exists"

else

echo "File does not exist"

fi

• A. if [-f "$filename" ]; then

• B. if [-d "filename" ]; then

• C. if [-f "Sfilename" ] then

• D. if [ -f "$filename" ]; while

7. Simulasyon Sorusu

DRAG DROP -

As a Systems Administrator, to reduce disk space, you were tasked to create a shell script that does the following:

Add relevant content to /tmp/script.sh, so that it finds and compresses related files in /var/log without recursion.

INSTRUCTIONS:

Drag and drop snippets to fill the blanks to build a script that performs the actual compression of rotated log files.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

#!/bin/bash

#name: script.sh

find /var/log -type f -maxdepth 1 | grep ................ > /tmp/tempfile .........

filename ..... $(cat................)

do

............ $filename

............

• Bosluklara sürüklenecek ifadeler sirayla

  "$log.[1-6]$"

  for

  in

  /tmp/tempfile

  gzip

  done

• B. bos

8. A systems administrator is deploying three identical, cloud-based servers. The administrator is using the following code to complete the task:

resource “abc instance" "ec2_ instance” {

ami = data.abc_ami.vendor-Linux-2.id

associate pubilp iaddcres s = true

count = 3

instance_type = "instance_type”

vpc_ security group ids = [abc.security group.allow_ssh.

id]

key_name = abc_key pair.key pair.key_ name

tags = {

Name = "${var.nmamespace} $(count.index)"

}

}

Which of the following technologies is the administrator using?

• A. Ansible

• B. Puppet

• C. Chef

• D. Terraform

9. Which of the following technologies can be used as a central repository of Linux users and groups?

• A. LADP

• B. MFA

• C. SSO

• D. PAM

10. A systems administrator is troubleshooting connectivity issues and trying to find out why a Linux server is not able to reach other servers on the

same subnet it is connected to. When listing link parameters, the following is presented:

# ip link list dev etho

2: etho: <NO-CARRIER, BROADCAST, MULTICAST, UP> mtu 1500, qdisc

fq_codel state DOWN mode DEFAULT group default qlen 1000

link/ether ac:00:11:22:33:cd brd ff:ff:ff:ff:ff:ff:ff

Based on the output above, which of following is the MOST probable cause of the issue?

• A. The address ac:00:11:22:33:cd is not a valid Ethernet address

• B. The Ethernet broadcast address should be ac:00:11:22:33:ff instead

• C. The network interface ethO is using an old kernel module.

• D. The network interface cable is not connected to a switch