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.

1. 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

2. 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

3. 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.

4. 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.

5. 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.

6. 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
A.
Application layer
B.
Transport layer
C.
Delivery layer
D.
Internet (IP) layer
Solution
Question 1
IP addresses are used at the data link layer.
False. MAC address used in Data LInk Layer.
Question 2
Client computers provide services to users on the Internet.
False. Servers attched to internet provides service to users.

7. Question 3
A packet with a source port number of 65 is coming from a server.
False. Port 65 is not a system port or well known port.
Question 4
If a reliable data communication was desired, TCP would be used.
True. Because TCP has abilityto retrunsmit packets if it's lost in transmission od the packet is
corrupted.
Question 5
Encapsulation refers to the process of attaching a series of control information to a block of data.
True. This includes informations abount source and destination IP and other protocol oriented
informations.
Question 6
The IP protocol relies on ICMP to send error messages on its behalf
True.
Question 7
Acknowledgements (ACKs) are used in TCP to ensure reliable delivery of packets.
True. For every successful packet delivery one ACK packet is send to sender.
Question 8
The digital equivalent of "wiretapping" is known as sniffing.
True. Packets are digotally captured in sniffing.
Question 9
The emergence of electronic voting machines has eliminated the possibility of error.
True. This eleminates the posibility of human error.
Question 10
MAC addresses are used in the application layer.
False. MAC addresses are used in DATA link layer.

8. Question 11
Which of the following is not a layer in the TCP/IP protocol suite:
C.Delivery layer
Question 12
In order for a packet to be directly delivered to a physical machine on a local area network, it
requires:
B. A MAC address
Question 13
A port number is used to identify ______.
D.the application on a machine that is sending and/or receiving data
Question 14
Domain names are mapped to IP addresses using _________ .
B.DNS
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 _______ .
D.session hijacking
Question 16
In the TCP/IP protocol suite, the network layer (or IP) is primarily responsible for ______ .
B.setting up and maintaining reliable connections
Question 17
External privilege escalation typically involves:
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
Question 18
A webpage corruption attack (breaking in and changing a webpage) is an example of ______ .
C.resource-based attack
Question 19
Due to the lack of reliability measures, UDP is ______ than TCP.
D.faster and less complicated

9. Question 20
TCP uses ______ to preserve order and to recognize and eliminate duplicate packets.
A.sequence numbers
Question 21
Packets contain ______ .
B.blocks of data and control fields/headers
Question 22
which of the following is not a valid IP address:
C.3.33.333.3 The max value of a IP field cannot exceed 255
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?
B.ARP. Address resolution protocol(ARP) used to translate IP address to MAC address.
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.
D.smurf
Question 25
TCP maintains two connections (client to server AND server to client) and requires a ______
handshake for connection establishment
C.three-way