5 - Implementing Network Security

What is a device in the context of networking?

• A) A piece of software

• B) A piece of hardware

• D) A type of protocol

• C) A type of cable

Answer explanation

A device in the context of networking refers to a piece of hardware, such as a router, switch, or computer, that is used to connect to a network.

What does media do in a network?

• A) Translates data

• D) Blocks unwanted traffic

• B) Connects devices and carries data

• C) Controls network traffic

Answer explanation

Media in a network connects devices and carries data, facilitating communication between different nodes within the network.

What is the function of a network adapter?

• D) Filters content

• C) Protects against DoS attacks

• B) Translates data between the network and a device

• A) Controls network communications

Answer explanation

The function of a network adapter is to translate data between the network and a device, making communication possible between the two.

Which software controls network communications using a set of rules?

• A) Network operating system

• D) Switch

• B) Protocol

• C) Firewall

Answer explanation

Protocols control network communications using a set of rules, ensuring data is transmitted correctly between devices.

What is the main function of a load balancer?

• A) Connects multiple networks

• B) Filters content

• C) Determines most efficient path for network traffic

• D) Protects against unwanted traffic

Answer explanation

The main function of a load balancer is to determine the most efficient path for network traffic, ensuring even distribution and optimal performance across servers.

What is a key feature of routers?

• D) Creates dedicated connections involving only two hosts in a transmission

• C) Intercepts client traffic before it leaves the internal network

• B) Combines multiple physical network segments into a single logical network

• A) Can limit access to specific ports based on MAC address

Answer explanation

Routers combine multiple physical network segments into a single logical network, allowing for efficient data routing between different networks.

What is the purpose of a proxy?

• A) Protects a system or network by blocking unwanted traffic

• D) Filters content

• B) Acts on behalf of one end of a network connection

• C) Determines most efficient path for network traffic

Answer explanation

A proxy acts on behalf of one end of a network connection, allowing it to access resources indirectly and enhancing security and privacy.

What is a common security protection provided by switches?

• D) Controls network communications using a set of rules

• B) Can implement loop prevention to shut down network loops

• A) Can limit access to specific ports based on MAC address

• C) Translates data between the network and a device

Answer explanation

Switches can limit access to specific ports based on MAC address, providing a common security protection measure.

What is a feature of reverse proxies?

• A) Intercept traffic coming from an external network

• D) Filters content

• B) Protects against DoS attacks

• C) Creates dedicated connections involving only two hosts in a transmission

Answer explanation

A reverse proxy intercepts traffic coming from an external network, making it a feature of reverse proxies.

What is a key function of firewalls?

• A) Acts on behalf of one end of a network connection

• B) Protects a system or network by blocking unwanted traffic

• C) Determines most efficient path for network traffic

• D) Connects multiple networks

Answer explanation

Firewalls protect a system or network by blocking unwanted traffic, making option B the correct choice.