Ch18 Networking Basics Test Questions & Answers

Linux Essentials for Cybersecurity (Rothwell/Kinsey)

Chapter 18 Networking Basics

1) A network is created when at least __________ or more computers communicate through some sort of connection.

A) 1

B) 2

C) 3

D) 4

2) Which of the following technologies can be used for a network connection?

A) Wireless

B) Ethernet

C) Fiber optic

D) All of the above

3) Each computer on a network is called a __________, and it can include many different systems, such as desktop and laptop computers, printers, routers, switches, and cell phones.

A) host

B) subnet

C) protocol

D) LAN

4) Which of the following is true regarding the LAN and WAN general classes of networks?

A) A WAN is a network that describes all the hosts that communicate directly with one another on the same network.

B) A WAN is a collection of LANs that can communicate through routers or switches.

C) A LAN is a network that describes a collection of WANs.

D) A city is analogous to a WAN and the entire country is analogous to a LAN.

5) Which of the following is a well-defined message that includes data as well as metadata sent across networks?

A) Packet header

B) IP address

C) Network packet

D) Port

6) Which of the following is a unique numeric-based value that is like the street name on a traditional envelope?

A) Packet header

B) IP address

C) Network packet

D) Port

7) Which of the following is a program that is running on the host, listening for incoming messages on a specific port number?

A) Protocol

B) Subnet

C) Client

D) Service

8) Which of the following is a well-defined standard for network communications between two hosts?

A) Protocol

B) Subnet

C) Client

D) Service

9) A __________ is a host on a network that offers a service; it serves something to the receiver, which is known as a client.

A) port

B) network packet

C) server

D) protocol

10) Which of the following protocols is used to determine where to send information across a network?

A) IP address

B) TCP

C) ICMP

D) UDP

11) In reference to networking, UDP is an acronym for which of the following?

A) Unique Database Protocol

B) User Datagram Protocol

C) Unique Datagram Protocol

D) User Database Protocol

12) Which of the following is not true regarding IPv4 and IPv6?

A) IPv4 uses a method called dotted decimal notation, a 32-bit number divided into four octets.

B) IPv4 has a more efficient routing technique than IPv6.

C) IPv4 has been an Internet standard for a long time and is slowly being replaced by IPv6.

D) IPv6 uses a technique called hexadecimal notation, which uses a 128-bit number.

13) Which of the following refers to the process of dividing a larger network into a smaller one and results in the loss of assignable IP addresses?

A) Autoconfiguration

B) NAT

C) Subnetting

D) Routing

14) Which of the following is an example of an IPv4 address?

A) 192.168.100

B) 11000000

C) 11000000.10101000

D) 192.168.100.25

15) Which class of IPv4 addresses is only used for research and development?

A) C

B) E

C) B

D) A

16) Which of the following subnet masks is essentially the same format as dotted decimal notation?

A) Variable-Length Subnet Mask (VLSM) format

B) Binary format

C) Classless Inter-Domain Routing (CIDR) format

D) None of the above

17) Which of the following ranges of IP addresses are for private use only?

A) 10.0.0.0-10.255.255.255

B) 172.16.0.0-172.31.255.255

C) 192.168.0.0-192.168.255.255

D) All of the above

18) Which of the following protocol suites is used primarily to send error messages and for determining the status of network devices?

A) ICMP

B) IP

C) UDP

D) TCP

19) The /etc/services file is useful to administrators in that it contains ports that have been assigned to services by the __________.

A) ICMP

B) CIDR

C) IANA

D) System administrator

20) Which of the following network ports is associated with the SMTP service that is used to send email?

A) 22

B) 25

C) 110

D) 389