Question 1

____ are commonly used to connect two companies networks over the Internet in a site-to-site configuration.

Accepted Answer

A)  Bastion hosts 
B)  VPNs 
C)  Proxy servers 
D)  Stateful proxies

Question 2

What are some of the advanced security functions provided by modern firewalls?

Accepted Answer

The answer of What are some of the advanced security...

Question 3

Ports numbers range from 0 to ____.

Accepted Answer

A)  1024 
B)  3999 
C)  65,535 
D)  786,568

Question 4

Firewalls can be used to host ____ to reduce server load and improve Web-site performance.

Accepted Answer

A)  logging 
B)  shielding hosts 
C)  VPN 
D)  cached data

Question 5

Packet-filtering firewalls examine every incoming packet _____ and can selectively filter packets.

Accepted Answer

A)  transport 
B)  session 
C)  header 
D)  data

Question 6

In the OSI model, level 1 is the ____ layer.

Accepted Answer

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

Question 7

A firewall may also help prevent some Trojan horses from leveraging the local network through unauthorized service ports called ____.

Accepted Answer

A)  back doors 
B)  application proxies 
C)  perimeters 
D)  content locks

Question 8

Port numbers come in two flavors: well-known ports and ____________________ ports.

Accepted Answer

The answer of Port numbers come in two flavors: well-known...

Question 9

A firewall is designed to prevent all attackers, viruses, and would-be intruders from entering a computer or computer network.

Accepted Answer

A) True 
 B)False

Question 10

____________________ inspection blocks packets that are sent from an external computer that does not have a currently active connection to an internal computer.

Accepted Answer

The answer of ____________________ inspection blocks packets that are sent...

Question 11

Match each item with a statement below.
-Consists of general information about the size of the packet, the protocol that was used to send it, and the IP address of both the source computer and the destination

Accepted Answer

A) PAT and NAT 
B) bastion host 
C) application proxy 
D) extranet 
E) header
F)perimeter
G)data
H)port
I)packet filtering

Question 12

How do firewalls help document what happens on a network?

Accepted Answer

The answer of How do firewalls help document what happens...

Question 13

What is User Datagram Protocol (UDP)?

Accepted Answer

The answer of What is User Datagram Protocol (UDP)?...

Question 14

A ____ firewall enables you to log passing traffic, protecting the whole network at one time.

Accepted Answer

A)  stateful 
B)  stateless 
C)  perimeter 
D)  DMZ

Question 15

Mobile devices such as laptops, PDAs, and smartphones blur the perimeter boundary.

Accepted Answer

A) True 
 B)False

Question 16

Match each item with a statement below.
-Function as an outbound network-level proxy.

Accepted Answer

A) PAT and NAT 
B) bastion host 
C) application proxy 
D) extranet 
E) header
F)perimeter
G)data
H)port
I)packet filtering

Question 17

A(n) ____________________ is an extended network that shares part of an organization's network with third parties.

Accepted Answer

The answer of A(n) ____________________ is an extended network that...

Question 18

Describe each generation of firewalls.

Accepted Answer

The answer of Describe each generation of firewalls....

Question 19

____ firewalls can be used to perform load balancing.

Accepted Answer

A)  Application gateway 
B)  Stateful 
C)  Stateless 
D)  NAT

Question 20

Firewalls provide ____ services by examining packet headers and allowing traffic that conforms to estalished rules to continue.

Accepted Answer

A)  packet filtering 
B)  NAT 
C)  application proxy 
D)  TCP/IP

Exam 4: Introduction to Firewalls