Question 1

IP addresses are used at the data link layer.

True False

Question 2

Client computers provide services to users on the Internet.

True False

Question 3

A packet with a source port number of 65 is coming from a server.

True False

Question 4

If a reliable data communication was desired, TCP would be used.

True False

Question 5

Encapsulation refers to the process of attaching a series of control information to a block of data.

True False

Question 6

The IP protocol relies on ICMP to send error messages on its behalf

True False

Question 7

Acknowledgements (ACKs) are used in TCP to ensure reliable delivery of packets.

True False

Question 8

The digital equivalent of "wiretapping" is known as sniffing.

True False

Question 9

The emergence of electronic voting machines has eliminated the possibility of error.

True False

Question 10

MAC addresses are used in the application layer.

True False

Question 11

Which of the following is not a layer in the TCP/IP protocol suite:

	A.	Application layer
	B.	Transport layer
	C.	Delivery layer
	D.	Internet (IP) layer

Question 12

In order for a packet to be directly delivered to a physical machine on a local area network, it requires:

	A.	An IP address
	B.	A MAC address
	C.	A web address
	D.	None of the above

Question 13

A port number is used to identify _________ .

	A.	the location of a computer on a network
	B.	the type of network hardware being used
	C.	whether TCP or UDP is being used
	D.	the application on a machine that is sending and/or receiving data

Question 14

Domain names are mapped to IP addresses using _________ .

	A.	HTTP
	B.	DNS
	C.	RARP
	D.	MAC Daddy

Question 15

A denial of service attack where an attacker disables a computer in the middle of a network connection, then impersonates the disabled computer is known as _______ .

	A.	a resource-based attack
	B.	SQL injection
	C.	a ping of death
	D.	session hijacking

Question 16

In the TCP/IP protocol suite, the network layer (or IP) is primarily responsible for ______ .

	A.	generating electromagnetic signals to propagate data transmission
	B.	setting up and maintaining reliable connections
	C.	routing
	D.	providing a user interface

Question 17

External privilege escalation typically involves:

	A.	one step: use an exploit over the Internet to gain normal user access
	B.	one step: run a program with an exploit to gain administrative access
	C.	two steps: 1: use an exploit over the Internet to gain normal user access; 2: run a program with an exploit to gain administrative access
	D.	two steps: 1: run a program with an exploit to gain administrative access; 2: use an exploit over the Internet to gain normal user access

Question 18

A webpage corruption attack (breaking in and changing a webpage) is an example of ______ .

	A.	MAC attack
	B.	denial of service attack
	C.	resource-based attack
	D.	service interruption-based attack

Question 19

Due to the lack of reliability measures, UDP is ______ than TCP.

	A.	slower and more complicated
	B.	faster and more complicated
	C.	slower and less complicated
	D.	faster and less complicated

Question 20

TCP uses ______ to preserve order and to recognize and eliminate duplicate packets.

	A.	sequence numbers
	B.	port numbers
	C.	IP addresses
	D.	MAC addresses

Question 21

Packets contain ______ .

	A.	just blocks of data
	B.	blocks of data and control fields/headers
	C.	just control fields/headers
	D.	none of the above

Question 22

which of the following is not a valid IP address:

	A.	10.20.30.40
	B.	5.0.0.5
	C.	3.33.333.3
	D.	1.11.111.1

Question 23

Occasionally, a router (or other device) does not know the MAC address of a computer on the network. What protocol can be used to find the MAC address if we know the IP address?

	A.	UDP
	B.	ARP
	C.	RARP
	D.	ICMP

Question 24

A ______ attack broadcasts a ping to all machines on a network with a forged return address. This results in some poor computer being bombarded with packets.

	A.	ping of death
	B.	session hijacking
	C.	port scanning
	D.	smurf

Question 25

TCP maintains two connections (client to server AND server to client) and requires a ______ handshake for connection establishment

	A.	one-way
	B.	two-way
	C.	three-way
	D.	four-way