Prepare Important Exam with 201-450 Exam Dumps(2023) [Q63-Q82]

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Prepare Important Exam with 201-450 Exam Dumps(2023)

Pass Exam Questions Efficiently With 201-450 Questions

NO.63 After changing the default runlevel in the SysV-init configuration file, the system boots in a different than intended runlevel. Where else could this different runlevel be defined?

In the /etc/sysctl.conf

In the boot loader configuration file

In the /etc/runlevel file

In the /boot/initramfs file

In the /etc/rc.d/rc.local file

NO.64 CORRECT TEXT
Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.)

lsof, /usr/bin/lsof

NO.65 Which of the following configuration files are used by tcpwrapper?

/etc/tcpd.allow and etc/tcpd.deny

/etc/tcpwrapper.allow and /etc/tcpwrapper.deny

/etc/hosts.allow and /etc/hosts.deny

/etc/access.allow and /etc/access.deny

/etc/service.allow and /etc/service.deny

NO.66 Which RAID level value must be used with Linux software RAID in order to create an array of mirrored devices?

container

mirrorstripe

NO.67 CORRECT TEXT
Which directory contains the system-specific udev rule files? (Specify the absolute path including the directory name)

/etc/udev/rules.d, /etc/udev/rules.d/

NO.68 CORRECT TEXT
Which directory contains system-specific systemd unit files? (Specify the full path to the directory.)

/lib/systemd/system

NO.69 CORRECT TEXT
A new kernel version needs to be compiled to use a new feature. If the old kernel configuration file is available, which make target creates a configuration file for the new kernel based on the configuration of the old kernel?

oldconfig, make oldconfig

NO.70 Which of the following commands adds a static IPv6 address to the network interface eth0?

ip add addr 2001:db8::1337/64 dev eth0

ip -6 add addr 2001:db8::1337/64 dev eth0

ip addr add 2001:db8::1337/64 dev eth0

ip -6 addr add new 2001:db8::1337/64 dev eth0

ip addr add -6 2001:db8::1337/64 dev eth0

NO.71 If the file containing the Linux kernel is deleted, what happens when the system boots?

The system starts normally since the bootloader copies the kernel to the master boot record of the hard disk

Instead of the kernel, the initramfs is loaded and instructed to mount the root filesystem and reinstall the kernel from the original package or from source

The bootloader mounts the root filesystem read-only and launches /bin/sh directly in order to allow the administrator to reinstall the kernel

Without a kernel system cannot boot and, depending on the bootloader, an error is displayed

Explanation/Reference:

NO.72 What is the correct parameter to pass to the kernel at boot time to force it to use only one of the available processors?

maxcpus=1

usecpus=1

smpcpus=1

vcpumx=1

NO.73 Fill in the blank.
Which directory contains system-specific systemd unit files? (Specify the full path to the directory.)

/lib/systemd/system

NO.74 What action should be performed after increasing the size of a logical volume?

Run vgresize.

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

Run lvresize.

Remount the logical volume.

NO.75 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.)

route add default gw 192.168.0.1 eth0

ifconfig eth0 defaultroute 192.168.0.1

ip route add default via 192.168.0.1 dev eth0

echo defaultroute 192.168.0.1 >> /etc/resolv.conf

route add defaultgw=192.168.0.1 if=eth0

NO.76 Which of the following properties should be recorded in order to monitor the quality of a network link? (Choose two.)

Bandwidth in both directions

Number of nodes using the link

Effective Latency

Number of IPv4 and IPv6 packets

Number of used TCP ports

NO.77 Which of the following best describes the format of the /etc/fstab file?

device name; filesystem type; mount point; mount options; dump filesystem; fsck order

device name; mount point; filesystem type; mount options; dump filesystem; fsck order

device name; mount point; mount options; filesystem type; dump filesystem; fsck order

mount point; filesystem type; device name; mount options; dump filesystem; fsck order

mount point; device name; filesystem type; mount options; dump filesystem; fsck order

NO.78 Which command is used to install a new LILO boot loader?

lilo

lilo-config

lilo-install

install-lilo

NO.79 Fill in the blank.
What command ensures that the file systems are written to disk after a lot of write operations?
(Specify ONLY the command without any path or parameters.)

sync

NO.80 CORRECT TEXT
Which file contains the message that is displayed above the login prompt of the system console? (Specify the full name of the file, including path.)

/etc/issue

NO.81 CORRECT TEXT
After configuring a new kernel, what file under /usr/src/linux/ contains the configuration?

/usr/src/linux/.config, .config

NO.82 Which of the following filter keywords for tcpdump specify the transfer direction for network packets? (Choose TWO correct answers.)

source

src

dest

src or dst

both

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