Question 1

Match each item with a statement below.
-Defined pieces of packet or system data

Accepted Answer

Parameters are values or variables that can be passed along with a URL to a server or application.

Answer: D
 Log files are records of events or actions taken in a system or network, including information about packets or data.

Answer: H
 Proxy servers are intermediary servers that can modify or filter network traffic, including packets and system data.

Answer: I
 Transparent proxies are proxy servers that operate without changing the data or packets that pass through them, whereas nontransparent proxies do modify the data.

Answer: F, G
 SOCKS, WinGate, and other similar technologies are examples of specific types of proxy servers that may operate in various ways. Dual-homed hosts and URL redirection are not related to packet or system data specifically.

Question 2

Microsoft ____________________ is a complex, full-featured firewall that includes stateful packet filtering as well as proxy services, NAT, and intrusion detection.

Accepted Answer

The answer of Microsoft ____________________ is a complex, full-featured firewall...

Question 3

Match each item with a statement below.
-Evaluate the application-layer data buried in the data portion of an IP packet to determine whether to allow the packet to pass into or out of the network.

Accepted Answer

Proxy servers are used to evaluate the application-layer data buried in the data portion of an IP packet to determine whether to allow the packet to pass into or out of the network.

Answer: D
 Log files are used to record and analyze network traffic, which helps in identifying and preventing security threats.

Answer: A
 A dual-homed host is a computer that has two or more network interfaces, which can be configured to provide extra security by isolating traffic between different networks.

Note: The other options are also related to network security, but they do not directly involve evaluating application-layer data in IP packets.

Question 4

____, a Symantec product, offers a number of residential firewall and security applications that also provide various degrees of content filtering and proxy services.

Accepted Answer

Norton is a Symantec product that offers residential firewall and security applications, which also provide content filtering and proxy services. The other options, WinGate, Squid, and Internet Security & Acceleration Server, are not Symantec products.

Question 5

____ has a graphical interface that enables you to quickly configure applications to use SOCKS.

Accepted Answer

SocksCap has a graphical interface that allows the user to configure applications to use SOCKS quickly. ISA, Squid, and WinGate are proxy servers and do not have specific graphical interfaces for configuring SOCKS.

Question 6

Match each item with a statement below.
-Computer that has two separate network interfaces, one to the external Internet and one to the internal LAN.

Accepted Answer

A computer with two separate network interfaces, as described in the statement, is known as a dual-homed host.

Answer: H 
 Proxy servers are mentioned in the statement as having both transparent and nontransparent options.

Answer: I 
 Transparent proxies are mentioned in the statement as one of the options for proxy servers.

Question 7

It is good practice to dedicate a proxy server to one ____________________.

Accepted Answer

The answer of It is good practice to dedicate a...

Question 8

Match each item with a statement below.
-Scan specific parts of the data portion of an HTTP packet and redirect it to a specific location.

Accepted Answer

URL redirection is the process of scanning the data portion of an HTTP packet and redirecting it to a specific URL.

Answer: E
 Parameters are specific parts of the data portion of an HTTP packet that can be scanned and redirected to a specific location.

Answer: I
 Transparent proxies allow for the scanning and redirection of specific parts of the data portion of an HTTP packet without the client's knowledge, while non-transparent proxies require client configuration.

Answer: H
 Proxy servers, including transparent and non-transparent variants, are responsible for intercepting and redirecting HTTP traffic.

Answer: D
 Log files may contain information about the HTTP traffic that can be used to analyze and redirect specific parts of the data portion of an HTTP packet, but they do not actively perform the scanning and redirection process.

Note: A, F, and G are not relevant to the given statement.

Question 9

Proxy servers, like packet filters, can filter out content based on rules that contain a variety of ____________________.

Accepted Answer

The answer of Proxy servers, like packet filters, can filter...

Question 10

A reverse proxy acts as a stand-in for a ____.

Accepted Answer

A reverse proxy acts as a stand-in for a web server, meaning it sits in front of a web server and serves as a gateway to receive and forward client requests to the correct server. While it can provide some security benefits similar to a firewall or packet filter, its primary function is to improve performance and scalability for web applications. While a reverse proxy can be considered a type of proxy server, the specific function as a stand-in for a web server sets it apart from other types of proxies.

Question 11

Match each item with a statement below.
-Maintain records of events such as logon attempts and accesses to files.

Accepted Answer

Log files are the records of events such as logon attempts and accesses to files.

Answer: H or I
 Proxy servers can be transparent or non-transparent. Transparent proxies can be easily identified, whereas non-transparent proxies can maintain anonymity. Both can be used to maintain records of events.

Note: The other options listed (A, B, E, F, G) do not relate to maintaining records of events.

Question 12

Match each item with a statement below.
-Also called explicit proxies.

Accepted Answer

Nontransparent proxies are also known as explicit proxies because they require client-side configuration to direct traffic through them.

Question 13

A proxy server rebuilds packets with new ____________________ IP information, which shields internal users from those on the outside.

Accepted Answer

The answer of A proxy server rebuilds packets with new...

Question 14

A ____ is also an identifier consisting of an IP address and port number, such as 172.16.0.1:80.

Accepted Answer

This is the definition of a socket, which is a combination of an IP address and a port number used for communication between two devices over a network. A route is a path taken by network traffic to reach its destination, a domain name is a string of characters used to identify a website or other online entity, and a URL is a specific address for a webpage or other online resource that includes the protocol, domain name, and file path.

Question 15

Match each item with a statement below.
-Configured so that they are totally invisible to end users.

Accepted Answer

Transparent proxies are designed to intercept requests and responses without requiring any configuration or awareness from end users, making them effectively invisible to them.

Question 16

NetPatrol is ____.

Accepted Answer

NetPatrol is an intrusion detection and prevention system that can be integrated with WinGate. It is not an antivirus plug-in, IP-tunnel remote access application or a Web content classification plug-in for WinGate.

Question 17

A ____ is a service that acts as a proxy for inbound connections.

Accepted Answer

A reverse proxy is a type of proxy server that sits between a client and a web server, receiving and forwarding requests from the client to the server. It is often used to improve performance, security, and reliability of web applications by caching content, balancing server load, and providing additional authentication and authorization layers. Options A, B, and C are all types of proxies, but they do not specifically act as a proxy for inbound connections.

Question 18

Match each item with a statement below.
-Set of protocols that enable proxy server access to applications without an assigned proxy server.

Accepted Answer

SOCKS is a set of protocols that enable proxy server access to applications without an assigned proxy server.

Answer: H 
 Proxy servers are servers that act as intermediaries between clients and other servers.

Answer: I 
 Transparent proxies are proxy servers that intercept client requests without modifying them and can be easily detected by clients.

Answer: D 
 Log files are files that record events and actions taken by a system or application.

Answer: E 
 Parameters refer to values passed to a function or command to customize its behavior.

Answer: A 
 A dual-homed host is a system that has connections to two or more different networks.

Answer: G 
 WinGate is a software application that provides a network proxy server, including NAT, firewall, email and web caching, and remote access technologies.

Answer: C 
 Nontransparent proxies modify client requests before forwarding them to the destination server and may not be easily detected by clients.

Answer: B 
 URL redirection is a technique used to redirect a client from one URL to another.

Question 19

Buffer ____________________ occurs when a program attempts to store more data in a temporary storage area (a buffer) than that area can hold.

Accepted Answer

The answer of Buffer ____________________ occurs when a program attempts...

Question 20

Match each item with a statement below.
-A very popular proxy server for home and small business environments.

Accepted Answer

WinGate is a very popular proxy server for home and small business environments.

Answer: F
 SOCKS is a type of proxy server that allows for more flexibility in terms of network protocols and applications.

Answer: H
 Proxy servers are intermediary servers that act as a gateway between a user and the internet.

Answer: D
 Log files are records of activity on a network, including those relating to proxy server usage.

Answer: I
 Transparent proxies are proxy servers that do not require any configuration on the part of the user, but may have limited functionality.

Answer: E
 Parameters are variables used in software applications that can be adjusted to change the behavior of the program.

Answer: B
 URL redirection is a technique used by proxy servers to redirect incoming requests to a different server or URL.

Answer: C
 Nontransparent proxies are proxy servers that modify or filter network traffic, often without the knowledge or consent of the user.

Answer: A
 A dual-homed host is a network device that has two network interfaces, allowing it to connect to multiple networks simultaneously. This is not directly related to proxy servers.

Quiz 7: Working With Proxy Servers and Application-Level Firewalls

Match each item with a statement below. -Defined pieces of packet or system data

Microsoft ____________________ is a complex, full-featured firewall that includes stateful packet filtering as well as proxy services, NAT, and intrusion detection.

Match each item with a statement below. -Evaluate the application-layer data buried in the data portion of an IP packet to determine whether to allow the packet to pass into or out of the network.

____, a Symantec product, offers a number of residential firewall and security applications that also provide various degrees of content filtering and proxy services.

____ has a graphical interface that enables you to quickly configure applications to use SOCKS.

Match each item with a statement below. -Computer that has two separate network interfaces, one to the external Internet and one to the internal LAN.

It is good practice to dedicate a proxy server to one ____________________.

Match each item with a statement below. -Scan specific parts of the data portion of an HTTP packet and redirect it to a specific location.

Proxy servers, like packet filters, can filter out content based on rules that contain a variety of ____________________.

A reverse proxy acts as a stand-in for a ____.

Match each item with a statement below. -Maintain records of events such as logon attempts and accesses to files.

Match each item with a statement below. -Also called explicit proxies.

A proxy server rebuilds packets with new ____________________ IP information, which shields internal users from those on the outside.

A ____ is also an identifier consisting of an IP address and port number, such as 172.16.0.1:80.

Match each item with a statement below. -Configured so that they are totally invisible to end users.

NetPatrol is ____.

A ____ is a service that acts as a proxy for inbound connections.

Match each item with a statement below. -Set of protocols that enable proxy server access to applications without an assigned proxy server.

Buffer ____________________ occurs when a program attempts to store more data in a temporary storage area (a buffer) than that area can hold.

Match each item with a statement below. -A very popular proxy server for home and small business environments.