Ch20 Network Service Configuration Essential Test Bank Docx

Linux Essentials for Cybersecurity (Rothwell/Kinsey)

Chapter 20 Network Service Configuration: Essential Services

1) Which of the following is the de facto standard name resolution solution for the majority of systems connected to the Internet?

A) DNS

B) LDAP

C) NIS

D) DHCP

2) The original __________ were .com, .org, .net, .int, .edu, .gov, and .mil; many others have been added in recent years.

A) domain names

B) subdomains

C) FQDNs

D) top-level domains

3) How many root servers are there at the top of the DNS domain structure?

A) 9

B) 11

C) 13

D) 15

4) The primary configuration file for the BIND server is the __________ file.

A) /etc/named.conf

B) /var/named/named.ca

C) /etc/resolv.conf

D) /var/named/named.localhost

5) Which zone file contains a list of the root servers?

A) /var/named/named.localhost

B) /var/named/named.ca

C) /etc/named.conf

D) /etc/resolv.conf

6) Which of the following refers to the system where you make changes directly to the zone files?

A) Master name server

B) Authoritative name server

C) Slave name server

D) Reverse lookup zone

7) Which of the following is not true regarding zone file syntax?

A) Each record consists of fields of data separated by either spaces or tabs (whitespace).

B) Each line defines a record, and in most cases the end of the line is the end of the record.

C) Comment lines begin with a colon (:) character and continue to the end of the line.

D) When times are given in the zone file, the default time value is seconds.

8) Which of the following zone record types is used in reverse lookup zone files to translate IP addresses into domain names?

A) Address record type

B) Name server record type

C) Canonical record type

D) Pointer record type

9) To start the process of creating a chroot __________, you first need to create directories where all the files are placed.

A) device

B) jail

C) signature

D) account

10) Which of the following occurs when a fake DNS server provides incorrect data when a query is performed?

A) Zone transfer

B) TSIG

C) DNS spoofing

D) TTL

11) DHCP stands for which of the following?

A) Dynamic Host Configuration Protocol

B) Domain Host Configuration Process

C) Dynamic Host Configuration Process

D) Domain Host Configuration Protocol

12) After installing the correct DHCP server package, you can configure the server by editing the __________ file.

A) /etc/named.conf

B) dhcpd.leases

C) /etc/dhcpd.conf

D) ddns-update-style

13) Which of the following is the most widely used email server on Linux?

A) SMTP

B) Postfix

C) Sendmail

D) IMAP

14) Which of the following major components to email is responsible for accepting the email message from the MUA and sending it to the correct receiving mail server?

A) MDA

B) MSA

C) POP

D) MTA

15) Which of the following Postfix settings should be set to yes on publicly accessible Postfix servers to prevent techniques that are used to harvest email addresses?

A) relay_domains

B) disable_vrfy_command

C) relayhost

D) inet_interfaces

16) Which of the following files is useful to redirect email to local user accounts?

A) /etc/postfix/virtual

B) /etc/postfix/main.cf

C) /etc/aliases

D) $HOME/mail.backup

17) Which of the following programs can perform actions like blocking SPAM, redirecting mail to other user accounts, and making copies of the email message and sending them to other accounts?

A) Procmail

B) MTA

C) Postfix

D) Dovecot

18) Which of the following procmail flags is used to perform case-sensitive matching?

A) W

B) H

C) D

D) B

19) Which of the following is not true when comparing the IMAP and POP protocols?

A) IMAP supports the feature of folders or mailboxes.

B) POP is generally considered a simpler protocol, resulting in an easier implementation.

C) With IMAP, individual parts of a message can be retrieved separately.

D) POP allows multiple simultaneous connections.

20) Which setting for the Dovecot server specifies the location of where Dovecot stores its data?

A) mail_location

B) base_dir

C) listen

D) !include