Deck 1: Core Network Concepts and Terminology

Question 1

When you use your tablet to access the internet,the tablet is a ________.

A) client host
B) server host
C) both A and B
D) neither A nor B

Answer 1

A

Question 2

The Mirai bots in the KrebsOnSecurity.com attack were ________.

A) client hosts
B) server hosts
C) IoT devices
D) all of the above

Answer 2

C

Question 3

We call any device connected to the Internet a(n)________.

A) IP
B) client
C) router
D) host

Answer 3

D

Question 4

ISPs ________.

A) carry traffic in the Internet
B) connect users to the Internet
C) both A and B
D) neither A nor B

Question 5

Flooding a host with traffic so that it cannot serve its legitimate users is a ________ attack.

A) hacking
B) virus
C) malware
D) DoS

Question 6

In the name Internet,"inter" means ________.

A) between
B) interior
C) international
D) interplanetary

Question 7

Who is in charge of the Internet?

A) the U.S. Government
B) the United Nations
C) the IETF
D) No one

Question 8

The IETF primarily ________.

A) manages the Internet
B) creates Internet standards
C) coordinates the work of ISPs
D) all of the above

Question 9

The server program is always a webserver program.

Question 10

A packet sent from one host to another over the Internet will ALWAYS pass through ________.

A) a single ISP
B) more than 2 ISPs
C) exactly 2 ISPs
D) none of the above

Question 11

Internet communication that does not involve a human is referred to with the term ________.

A) World Wide Web
B) impersonal
C) anonymous
D) IoT

Question 12

Which of the following is constantly leading to new applications?

A) increasing speed
B) increasing reliability
C) increasing availability wherever you are
D) all of the above

Question 13

Which of the following is a host when it's on a network?

A) a client PC
B) a server
C) a mobile phone
D) all of the above

Question 14

Who owns the Internet?

A) The U.S. Government
B) The United Nations
C) The IETF
D) No one

Question 15

If a host cannot reach a DNS server,it ________.

A) cannot have a host name
B) will have to rely on host names
C) will need to use a DHCP server
D) is unlikely to be able to communicate with most server hosts

Question 16

The client program is usually a browser.

Question 17

Most servers are ________.

A) mainframes
B) Windows PCs
C) rack servers
D) routers

Question 18

Depicting the Internet as a cloud symbolizes ________.

A) the Internet is amorphous
B) the Internet today is too complex to be understandable by humans
C) the Internet is too complex for anyone to depict
D) users do not have to know how the Internet operates

Question 19

From a security perspective,the Internet's ability to give access to nearly everyone is a ________.

A) good thing
B) bad thing
C) both A and B
D) neither A nor B

Question 20

The KrebsOnSecurity.com attack ________.

A) was a denial of service attack.
B) used IoT devices to attack the site
C) both A and B
D) neither A nor B

Question 21

The network stack implements the ________ layer process.

A) application
B) transport
C) physical
D) data link

Question 22

What process adds a header in front of a TCP segment?

A) Application
B) Transport
C) Internet
D) Data Link

Question 23

IPv4 addresses are ________ bits long.

A) 32
B) 64
C) 128
D) none of the above

Question 24

The transport process always fragments the application message.

Question 25

To deliver IPv4 packets,routers look at the ________ addresses.

A) dotted decimal notation
B) EUI-48
C) IPv4
D) all of the above

Question 26

A TCP message is called a ________.

A) datagram
B) packet
C) frame
D) none of the above

Question 27

Router forwarding is called ________.

A) routing
B) switching
C) forwarding
D) none of the above

Question 28

The transport layer on the destination host ________.

A) reassembles the application message if it has been fragmented
B) removes the transport header
C) both A and B
D) neither A nor B

Question 29

________ addresses are 32 bits long.

A) IPv4
B) IPv6
C) EUI-48
D) none of the above

Question 30

Which is NOT in an IP packet?

A) Internet header
B) Transport header
C) Data link header
D) All of the above are part of the IP packet.

Question 31

When a frame arrives,the data link process on the destination host ________.

A) adds a header
B) removes a header
C) both A and B
D) neither A nor B

Question 32

On the Internet,a ________ host usually gets a dynamic IP address.

A) client
B) server
C) both A and B
D) neither A nor B

Question 33

Which of the following is an Internet supervisory protocol?

A) DNS
B) IP
C) both A and B
D) neither A nor B

Question 34

What process adds a header in front of an application message or fragment?

A) application
B) transport
C) internet
D) data link

Question 35

If there are 10 routers between the source and destination hosts,how many transport processes will be involved on all devices?

A) 1
B) 2
C) 10
D) 12

Question 36

An IP packet may include a(n)________.

A) application message or fragment
B) TCP segment or UDP datagram
C) both A and B
D) neither A nor B

Question 37

paths across a single network are called ________.

A) routes
B) data links
C) physical links
D) none of the above

Question 38

Routing is based on a(n)________.

A) IP address
B) single-network address
C) either A or B
D) neither A nor B

Question 39

If there are 10 routers between the source and destination hosts,how may internet processes will be involved on all devices?

A) 1
B) 2
C) 10
D) 12

Question 40

When a source host sends a packet to a destination host,there will probably be ________ along the way.

A) more routes
B) more data links
C) about the same number of routes and data links
D) all of the above

Question 41

When a packet is transmitted,there is a single data link in each ________.

A) point-to-point single network
B) switched network
C) both A and B
D) neither A nor B

Question 42

The final router in a route sends the packet being routed in a frame addressed to the ________.

A) next-hop router
B) destination host
C) local router
D) default router

Question 43

A DHCP server to assigns the client host the same IP address each time.

Question 44

A host sends a packet to another host containing six single networks along the way.How many routes are included in this transmission?

A) 1
B) 6
C) 7
D) 8

Question 45

In a point-to-point single network,there is always the same number of physical and data links.

Question 46

A host with a(n)________ IP address is easier to find than a host with a ________ IP address.

A) dynamic, static
B) static, dynamic
C) undetermined, static
D) undetermined, dynamic

Question 47

The originating host needs to contact the DNS server each time it sends a packet to the target host.

Question 48

All data link addresses are EUI-48 addresses.

Question 49

In a single switched network,a ________ connects consecutive switches.

A) physical link
B) data link
C) route
D) none of the above.

Question 50

In a point-to-point single network,how many physical links will there be when a packet is transmitted?

A) 0
B) 1
C) 2
D) We cannot say with the information provided.

Question 51

On the Internet,a ________ host usually gets a static IP address.

A) client
B) server
C) both A and B
D) neither A nor B

Question 52

Which of the following is true?

A) Frames are carried inside packets.
B) Packets are carried inside frames.
C) both A and B
D) neither A nor B

Question 53

In a single switched network with seven switches between a source and destination host,the source host addresses the frame ________.

A) to the first switch
B) to the destination host
C) to the first router
D) to the final switch

Question 54

A host sends a packet to another host containing six single networks along the way.How many data links are used for this transmission?

A) 1
B) 6
C) 7
D) 8

Question 55

Source and destination IP addresses are found in the ________ header.

A) IP
B) Frame
C) TCP
D) all of the above.

Question 56

When Host A wishes to communicate with Host B,a DNS server provides the IP address of ________.

A) Host A
B) the DNS server
C) Host B
D) none of the above

Question 57

A host sends a packet to another host with six single networks along the way.How many frames are involved?

A) 1
B) 6
C) 7
D) 8

Question 58

A host sends a packet to another host containing seven single networks along the way.How many other hosts will there be along the route when Host A transmits?

A) 1
B) 2
C) 7
D) 9

Question 59

A host sends a packet to another host with six single networks along the way.How many packets are involved in this transmission?

A) 1
B) 6
C) 7
D) 8

Question 60

When Host A wishes to talk with Host B,the DHCP server provides the IP address of ________.

A) Host A
B) DNS server
C) Host B
D) all of the above

Question 61

________ have access points.

A) Home access routers
B) Internet core routers
C) both A and B
D) neither A nor B

Question 62

Source and destination EUI-48 addresses are found in ________ headers.

A) IP
B) frame
C) TCP
D) UDP

Question 63

Which of the following has better access point capabilities?

A) Home access routers
B) Corporate access points
C) Both have about the same access point capabilities.

Question 64

Which of the following uses EUI-48 addresses?

A) Ethernet
B) Wi-Fi
C) both A and B
D) neither A nor B

Question 65

Hosts on the Internet have ________ addresses.

A) IP
B) data link
C) both A and B
D) neither A nor B

Question 66

________ have DHCP servers.

A) Home access routers
B) Internet core routers
C) both A and B
D) neither A nor B

Question 67

Wi-Fi uses ________ addresses.

A) IPv4
B) IPv6
C) MAC
D) EUI-48

Question 68

Ethernet uses ________ addresses.

A) IPv4
B) IPv6
C) MAC
D) EUI-48