Deck 13: Configuring Network Services

Question 1

All DNS servers contain a DNS cache file.

Answer 1

True

Question 2

The Apache daemon listens for HTTP requests on what port by default?

A) TCP 20
B) TCP 25
C) TCP 80
D) TCP 110

Answer 2

C

Question 3

After modifying the /etc/aliases file, what command must be run in order to rebuild the aliases database?

A) alias
B) newaliases
C) sendmail
D) mail

Answer 3

B

Question 4

When working with Sendmail, what command can be used to test SMTP support?

A) EHLO
B) telnet
C) HELO
D) smtp

Question 5

What PostgreSQL command-line utility backs up PostgreSQL database settings?

A) pg_dumpall
B) pg_dump
C) pg_restore
D) pg_backup

Question 6

What kind of servers resolve fully qualified domain names to IP addresses for a certain namespace on the Internet?

A) DHCP
B) NTP
C) DNS
D) NIS

Question 7

In NTP, what stratum consists of atomic devices or GPS clocks?

A) 0
B) 1
C) 2
D) 5

Question 8

The email command is an example of a Mail User Agent (MUA).​

Question 9

What port is used by the Network Time Protocol (NTP) for communication?

A) TCP 20
B) TCP 25
C) UDP 69
D) UDP 123

Question 10

How can you specify the intended DNS server to query with the dig command?​

A) ​&server
B) ​!server
C) ​@server
D) ​$server

Question 11

Select the SQL statement below that can be used to delete a database:

A) DELETE DATABASE
B) DROP TABLE
C) DROP DATABASE
D) DELETE TABLE

Question 12

What zone configuration file contains a PTR record used to identify the loopback adapter?

A) /var/named/named.ca
B) /etc/named.conf
C) /var/named/named.local
D) /etc/named.loop

Question 13

What directive below in Apache's httpd.conf file specifies that the index.html file in the document root directory will be sent to clients who request an HTML document?

A) DirectoryIndex index.html
B) DocumentRoot index.html
C) Index index.html
D) UseIndex index.html

Question 14

What ftp command uploads the filename from the current directory on the local computer to the current directory on the remote computer, and allows the use of wildcard metacharacters to specify the filename.

A) upload filename
B) mput filename
C) put filename
D) get filename

Question 15

When connecting to the vsftpd daemon using an FTP client utility as the user "anonymous", you will be placed in the root user's home directory.

Question 16

By default, the smb.conf file shares all printers and home directories for recognized Windows users.

Question 17

The Very Secure FTP daemon is a stand-alone daemon.

Question 18

What is the maximum number of characters that can be used in a NetBIOS name?

A) 15
B) 25
C) 50
D) 100

Question 19

What FTP command runs a shell on the local computer?

A) ˜
B) #
C) !
D) *

Question 20

Which command below can be used at a BASH command prompt to obtain a web page?

A) apachect1
B) ab
C) curl
D) webpage

Question 21

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
​A DNS name resolution request whereby an IP address is resolved to a FQDN.

Question 22

Describe the DNS lookup process.

Question 23

In the initial stage of the DHCP lease process, the client sends a(n) __________________ to all hosts on the network.

Question 24

What is NFS? How do you access files using a configured NFS Server?

Question 25

What DNS resource record type is used to provide the IP address for the e-mail server for a zone?​

A) ​NS
B) ​MX
C) ​SOA
D) ​CNAME

Question 26

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
The standard that all DNS servers and configuration files adhere to.​

Question 27

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
​A computer in an NIS domain that receives its configuration from an NIS master server or NIS slave server.

Question 28

The first DNS server in a zone is called the ____________________ DNS server.

Question 29

In order to change the time zone of a system after installation, what command must be used?​

A) ​time_zone
B) ​tzselect
C) ​tzchange
D) ​tzmod

Question 30

What command can be used to view and modify the date and time within the BIOS?​

A) ​clock
B) ​date
C) ​hwclock
D) ​clkmod

Question 31

​Where is the default document root directory for the Apache web server?

A) /usr/local/html
B) /var/www/html​
C) ​/usr/share/local/html
D) ​/var/html

Question 32

You can use the______________________ command to connect to both Samba and Windows servers.

Question 33

How does DHCP automatically configure IP addresses?

Question 34

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
​The process of copying resource records for a zone from a master to a slave DNS server.

Question 35

What is NIS? What is a master and slave NIS server? Give examples of configuration files that NIS is commonly used to coordinate.

Question 36

In the PostgreSQL utility, the __________________ built-in command is used to list available databases.

Question 37

Describe the structure of a database. When is a database considered a relational database?

Question 38

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
​The difference between time measurements from several different NTP servers.

Question 39

​What command can be used to see what actual time servers are being used for synchronization?

A) ​ntp_query
B) ​ntpq
C) ​ntp
D) ​ntp_info

Question 40

To share information to Windows client computers, you can use the ____________________ daemon, which emulates the SMB protocol.

Question 41

​What two NTP daemons below are commonly used on Linux systems?

A) ​sntpd
B) ​ntpd
C) ​chronyd
D) ​timed

Question 42

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
​The most common Linux daemon used to provide IPv4 and IPv6 addresses to other computers on the network.

Question 43

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
​A file that contains the IP addresses of top-level DNS servers.

Question 44

In order to look up IPv4 and IPv6 DHCP leases, what two files should be viewed?​

A) ​/var/lib/dhcpd/dhcpd.leases
B) ​/var/log/dhcpd/ipv4.leases
C) ​/var/log/dhcpd/ipv6.leases
D) ​/var/lib/dhcpd/dhcpd6.leases

Question 45

What two FTP commands below can be used to close the ftp utility?​

A) ​bye
B) ​quit
C) ​exit
D) ​close

Question 46

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
The most common protocol used to transfer files across networks such as the Internet.​

Question 47

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
​A protocol used by Windows computers that adds a unique 15-character name to file- and printer-sharing traffic.

Question 48

What two resource record types map FQDNs to IPv4 and IPv6 addresses respectively?​

A) ​A
B) ​AAAA
C) ​NS
D) ​CNAME

Question 49

What two protocols below are used for mail retrieval?​

A) ​POP
B) ​IMAP
C) ​SMTP
D) ​SNTP

Question 50

​Match each term with the correct statement below.
a.​Berkeley Internet Name Domain (BIND)
b.DHCPD daemon​
c.​DNS cache file
d.File Transfer Protocol (FTP)​
e.​jitter
f.NetBIOS​
g.​NIS client
h.offset​
i.​reverse lookup
j.zone transfer
The difference in time between two computers that use the NTP protocol.​