Network Services

Question 1

To connect to a website and display its contents, a URL entered in the web browser address bar needs to be translated into an IP address. Which server is used to handle this type of request?

Answer 1

DNS Server

Question 2

Which of the DNS database records listed below returns a 32-bit IP address?

Answer 2

A

Question 3

The DNS database AAAA record creates a pointer that maps a hostname to:

Answer 3

IPv6 Address

Question 4

Which of the DNS database records maps a domain name to a list of mail servers for that domain?

Answer 4

MX
(Mail Exchange)

Question 5

What is the function of a DNS TXT record?

Answer 5

Provides outside services with additional information about a domain
(Not used to direct any traffic)

Question 6

Which DNS TXT records are used for spam management?

Answer 6

SPF (Sender Policy Framework)
DKIM (DomainKeys Identified Mail)
DMARC (Domain-based Message Authentication, Reporting & Conformance)

Question 7

What allows the receiver of an email message to verify that the message claimed to have come from a specific domain was indeed authorized by the owner of that domain?

Answer 7

DKIM
(DomainKeys Identified Mail)

Question 8

An authentication method that enables signing an outbound email message with digital signature.

Answer 8

DKIM
(DomainKeys Identified Mail)

Question 9

An open standard defining a technical method to prevent electronic mail sender address forgery.

Answer 9

SPF (Sender Policy Framework)

Question 10

A DNS TXT record that allows the owner of a domain to specify all the servers authorized to send mail from their domain?

Answer 10

SPF (Sender Policy Framework)

Question 11

A DNS TXT record containing instructions for the recipient of an email message on how to handle emails that do not align with the sender’s mail policies?

Answer 11

DMARC
(Domain-based Message Authentication, Reporting & Conformance)

Question 12

Which server type enables automatic allocation of IP addresses on a network?

Answer 12

DHCP Server

Question 13

The time a DHCP client can use an IP address dynamically assigned by the DHCP server is referred to as what?

Answer 13

Lease

Question 14

Which term refers to permanent IP address assignment from a DHCP server?

Answer 14

Reservation

Question 15

A range of IP addresses that a DHCP server can lease out to DHCP clients is known as?

Answer 15

Scope

Question 16

A dedicated file server is also referred to as what?

Answer 16

FTP Server

Question 17

IPP, LPD/LPR, and SMB/CIFS are examples of protocols that enable what kind of network service?

Answer 17

Printing

Question 18

What is the function of an SMTP server?

Answer 18

Email Handling

Question 19

Which type of server is used for collecting diagnostic and monitoring data from networked devices?

Answer 19

Syslog Server

Question 20

What is the function of an HTTP server?

Answer 20

Serving of web pages

Question 21

Which part of the AAA security architecture deals with the verification of the identity of a person or process?

Answer 21

Authentication

Question 22

The process of granting or denying access to resources? (Part of AAA security architecture)

Answer 22

Authorization

Question 23

In the AAA security architecture, the process of tracking accessed services as well as the amount of consumed resources is called what?

Answer 23

Accounting

Question 24

2 solutions that provide the AAA functionality

Answer 24

TACACS+ (a remote authentication protocol)
RADIUS

Question 25

The protocol and port number used by spam filter?

Answer 25

SMTP
25

Question 26

A physical network device or software solution designed for managing the optimal distribution of workloads across multiple computing resources is known as:

Answer 26

A Load Balancer

Question 27

In computer networking, a computer system or application that acts as an intermediary between another computer and the Internet is commonly referred to as:

Answer 27

A Proxy

Question 28

Which system refers to industrial and manufacturing control system?

Answer 28

SCADA
(Supervisory Control and Data Acquisition)

Question 29

An emerging field of new technologies, such as wearable tech or home automation is known as what?

Answer 29

IoT
(Internet of Things)