Deck 11: Module a Networking Concepts

Question 1

________ is either an internet layer in the TCP/IP architecture or a collection of networks that is not the global Internet.

A) A host
B) The intranet
C) The U.S. Internet
D) An access router

Answer 1

The intranet

Question 2

A(n) ________ is a(n) ________.

A) bit; byte
B) octet; byte
C) bit; octet
D) byte; bit

Answer 2

octet; byte

Question 3

A(n) ________ is any device attached to the global Internet.

A) host
B) server
C) byte
D) LAN

Answer 3

host

Question 4

A server, a client PC, or a PDA can be referred to as a host.

Question 5

What is the typical size of an access router?

A) About the size of a hardback book
B) About the size of a pack of cards
C) Approximately the size of a laptop computer
D) Approximately the size of three or four hardback books

Question 6

In a home network, a message sent by a PC is called a ________.

A) server
B) byte
C) frame
D) router

Question 7

In a typical home network, an access router connects the home network to ________.

A) an intranet
B) the Internet
C) a LAN
D) a WAN

Question 8

For a host on a home network to use the Internet, each host needs a(n) ________.

A) switch
B) NAT
C) IP address
D) DHCP

Question 9

Which of the follow is FALSE about access routers?

A) They all have an SPI firewall.
B) They provide network address translation.
C) They connect a network to another network.
D) They have a DHCP server.

Question 10

UTP is a ________.

A) type of router
B) network interface card
C) type of wiring
D) type of translation

Question 11

Which of the following is a type of twisted pair wiring?

A) STP
B) NAT
C) IP
D) DHCP

Question 12

Companies use carriers for WAN transmission because ________.

A) companies lack rights of way
B) they are less expensive than a LAN
C) companies can then employ fewer computer security personnel
D) it is not legal to have carriers of their own

Question 13

DARPA created ________.

A) home networks
B) the Internet
C) intranets
D) WANS

Question 14

Initially, only ________ could connect to the Internet.

A) large corporations
B) noncommercial networks
C) commercial networks
D) K-12 schools

Question 15

Messages that travel within a single network are called ________.

A) packets
B) switches
C) frames
D) core switches

Question 16

Messages that travel all the way from one computer to another across the Internet are called ________.

A) packets
B) switches
C) frames
D) core switches

Question 17

An internal TCP/IP internet for a company's own communication is known as a(n) ________.

A) Internet
B) ISP
C) intranet
D) LAN

Question 18

Internet service providers connect at centers that are usually called ________.

A) NAPs
B) PSDNs
C) switches
D) LANs

Question 19

Networking circuitry is usually a component that you can choose to add to your circuit board in most PCs.

Question 20

A home network needs an Internet access line to connect to the Internet.

Question 21

UTP wiring is much more expensive than is STP wiring.

Question 22

A home network must have an Internet access line in order to connect to the Internet.

Question 23

The Internet uses transmission standards that are known as the TCP/IP standards.

Question 24

There is no central point of control over the Internet's operation.

Question 25

Security that results from the inherent operation of a standard is called ________.

A) incidental security
B) defective implementation
C) transmission security
D) IPsec security

Question 26

________ is the main protocol for delivering packets over the Internet.

A) ISP
B) IPsec
C) IP
D) NAP

Question 27

________ was created to address the fact that IP originally had no security.

A) ISP
B) IPsec
C) DHCP
D) NAP

Question 28

The TCP standard is difficult to attack because an attacker cannot send a false TCP message unless he or she can guess the sequence number of the next message.

Question 29

All computer standards were initially created with security.

Question 30

IP was originally created with advanced security.

Question 31

IPsec is burdensome and not widely used.

Question 32

When security is added to a standard, it usually is added only to later versions of the standard.

Question 33

Which of the following is NOT a core layer?

A) Applications
B) Internet
C) Single-network
D) Transport

Question 34

Which of the following is the highest core layer?

A) Applications
B) Internet
C) Single-network
D) Transport

Question 35

Which of the following is the middle core layer?

A) Applications
B) Internet
C) Single-network
D) Transport

Question 36

Standards at the ________ govern how packets are delivered across an internet.

A) internet core layer
B) single-network layer
C) transport layer
D) applications layer

Question 37

Computer standards are complex.

Question 38

The lowest core layer is the internet core layer.

Question 39

Standards are divided into five core layers.

Question 40

The bottom layer of the TCP/IP standard is the ________.

A) subnet access layer
B) single-network core layer
C) application layer
D) transport layer

Question 41

________ is a standards architecture.

A) ISO
B) OSI
C) ITU-T
D) IETF

Question 42

The ________ is roughly the same in OSI and TCP/IP.

A) subnet access layer
B) single-network core layer
C) application layer
D) transport layer

Question 43

Most firms use the ________.

A) hybrid TCP/IP-OSI standards architecture
B) OSI application standards
C) UTP links
D) optical fiber

Question 44

The IETF is the standards agency for the Internet.

Question 45

IETF documents are publicly available at no charge to the public.

Question 46

OSI divides three core layers into a total of seven layers.

Question 47

Hybrid architecture uses TCP/IP standards at the physical and data link layers and OSI standards at the internet and transport layers.

Question 48

A popular transmission medium for longer distances is ________.

A) TCP/IP
B) twisted pair
C) UTP
D) optical fiber

Question 49

________ uses radio waves.

A) Wireless
B) TCP/IP
C) Optical fiber
D) UTP

Question 50

The ________ LAN standard is designed to limit switch-to-switch communication to authenticated switches.

A) 802.1AE
B) 802.1X
C) TCP/IP
D) IPsec

Question 51

Radio signaling is considered very complex.

Question 52

In fiber optic transmission, signals have three different states, 0, 1, and 2.

Question 53

Ethernet dominates LAN standards.

Question 54

The IETF divided the internetworking core layer into two layers-________.

A) the internet and transport layers
B) the subnet access and transport layers
C) the single-network core and transport layers
D) the application and internet layers

Question 55

The main standard at the internet layer is the Internet Protocol.

Question 56

An IP header normally is shown by drawing several rows, with ________ in each row.

A) 32 bytes
B) 64 bits
C) 32 bits
D) 8 bytes

Question 57

An IP header is divided into smaller units called ________.

A) fields
B) bytes
C) packets
D) switches

Question 58

The ________ field has a value ________.

A) of 0 or 1
B) between 0 and 2
C) between 0 and 56
D) between 0 and 255

Question 59

A value of 1 in the ________ field indicates that the data field contains an ICMP message.

A) TTL
B) header checksum
C) data
D) protocol

Question 60

The ________ field allows the receiver to find errors.

A) TTL
B) header checksum
C) data
D) protocol

Question 61

A packet is a long stream of 1s and 0s.

Question 62

IP fragmentation is common.

Question 63

A subnet can only have one host.

Question 64

IP was created in the early 1980s.

Question 65

In TCP, ending a conversation normally takes ________.

A) two messages
B) three messages
C) four messages
D) six messages

Question 66

What does a reliable protocol do?

A) Detects every second error in a system
B) Detects and corrects errors
C) Only corrects errors, another node detects the errors
D) Detects user error and correct many of them

Question 67

If a flag field is not set, that means its value is ________.

A) 0
B) 1
C) 56
D) 256

Question 68

________ is a well-known port number for web-server programs.

A) TCP Port 80
B) TCP Port 25
C) TCP Port 21
D) TCP Port 1023

Question 69

________ uses options extensively.

A) IPsec
B) A LAN
C) TCP
D) A WAN

Question 70

An unreliable protocol does not detect and correct errors.

Question 71

TCP is considered a reliable protocol.

Question 72

ICMP messages are delivered in the data fields of ________.

A) frames
B) supervisory frames
C) IP packets
D) IPv4s

Question 73

DNS servers for ________ domains can include .com, .edu, and .CA.

A) fourth-level
B) third-level
C) second-level
D) top-level

Question 74

RIP, OSPF, and BGP are ________.

A) static IP addresses
B) dynamic host configuration protocols
C) supervisory protocols
D) dynamic routing protocols

Question 75

Many ICMP messages are error messages.

Question 76

The best-know ICMP message types are the ICMP echo and echo reply messages.

Question 77

Which of the following is NOT a popular transfer standard for e-mail?

A) POP
B) IMAP
C) SMTP
D) DHCP

Question 78

The ________ standard can be used in place of both FTP and Telnet while providing high security.

A) SSH
B) HTTP
C) HTML
D) DHCP

Question 79

Most applications share the same application layer standard.