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Questions # 21:

What is true about the ntpdate command?

Options:
A.

It is the primary management command for the NTP time server.

B.

It updates the local system's date (i.e. day, month and year) but not the time (i.e. hours, minutes, seconds).

C.

It queries one or more NTP time servers and adjusts the system time accordingly.

D.

It sends the local system time to one or many remote NTP time servers for redistribution.

E.

It can be used by any user to set the user clock independently of the system clock.

Questions # 22:

Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)

Options:
A.

shutdown -r now

B.

shutdown -r "rebooting"

C.

telinit 6

D.

telinit 0

E.

shutdown -k now "rebooting"

Questions # 23:

What output will the following command produce?

seq 1 5 20

Options:
A.

1

6

1

1

1

6

B.

1

5

10

15

C.

1

2

3

4

D.

2

3

4

5

E.

5

10

15

20

Questions # 24:

Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?

Options:
A.

/etc/keys

B.

/proc/keys

C.

/etc/inittab

D.

/proc/inittab

E.

/etc/reboot

Questions # 25:

On a Linux system with shadow passwords enabled, which file in the file system contains the password hashes of all local users? (Specify the full name of the file, including path.)

Questions # 26:

Which of the following tools used for DNS debugging, reports not only the response from the name server but also details about the query?

Options:
A.

dnsq

B.

dig

C.

hostname

D.

dnslookup

E.

zoneinfo

Questions # 27:

What information can the lspci command display about the system hardware? (Choose THREE correct answers.)

Options:
A.

Device IRQ settings

B.

PCI bus speed

C.

System battery type

D.

Device vendor identification

E.

Ethernet MAC address

Questions # 28:

Which of the following details is NOT provided in any output from the netstat utility?

Options:
A.

broadcast services

B.

interface statistics

C.

masquerading connections

D.

network connections

E.

routing tables

Questions # 29:

Which file specifies the user accounts that can NOT submit jobs via at or batch? (Provide the full path and filename)

Questions # 30:

What is true regarding a default route?

Options:
A.

The default route is always used first. When the default route is not available more specific routes are tried.

B.

When a default route is set, all other routes are disabled until the default route is deleted.

C.

The default route is only used if there is not a more specific route to a destination host or network.

D.

Without a default route, no network communication even in directly attached networks is possible.

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