Section-Unit 4 - Computer Networks Readiness Quiz

network various computers connected in the middle by a router.

Star

Communication over the internet is governed by an open collection of standards known as

TCP/IP

Networks rely on __________ to govern communication between devices.

Protocols

monitors network behaviors such as the origin and volume of traffic, looking for anomalies to proactively or reactively mitigate unwanted occurrences.

Network Auditing Software

_______________ processes both requests and provides services to each other.

Peer-to-Peer

a software that acts as an intermediary between a client and a server to shield the client from adverse actions of the server.

Proxy Server

Which type of cable transmits large volumes of data using the reflection of light through a glass or plastic core, surrounded by cladding?

Fiber-optic cable

Detects and removes known viruses from the network.

Antivirus software

What is the primary function of a router in a communication network?

Filtering and forwarding data between different networks.

What is the distance least to greatest on these transmission media

Wireless Transmission, Twisted Pair Cables, Coaxial Cables, Fiber-Optic Cables

A network that links systems over a greater distance, including machines on the opposite side of the world.

WAN

Are used to connect to different types of networks and provide management of the messages.

Bridges

is any software intentionally designed to cause damage to a computer, server, client, or computer network (by contrast, software that causes unintentional harm due to some deficiency is typically described as a software bug). 

Malware

Which type of cable has an outer plastic layer and is commonly used in computer networks and to deliver cable TV services?

Coaxial cable

Extends the network by using packet switching to forward data to the intended hard-wired devices.

Switch

A software program that infects a computer by inserting itself into programs that already reside in the machine.

Virus

Connects every device in a network to every other device and  enable redundancy while also introducing significantly more network traffic.

Mesh

The two most common network topologies are

Star/Bus

A network that connects a collection of computers in a single building.

LAN

Provides services, such as website hosting and routing, for other devices

Server

A network that is short-range communications within a few feet.  (i.e wireless headphones to a smartphone or wireless mouse to a PC)

PAN

Extends the range of cabling types so connections can be made by increasing the strength of the network signal.

Repeaters

Which technique allows someone to obtain sensitive information, such as usernames and passwords, by pretending to be a trustworthy person?

Phishing

Have a single machine serving as a central point to which all others are connected.

Star

Are a special purpose computer that forwards messages to and from the machines on their network.  They use their forwarding table to match up the private IP address with the internet IP address and send the message to the correct machine.

Router

Is a bridge between the computer network and the ISP, converting the incoming analog data into digital, and the outgoing digital data into analog.  It provides the access point to the internet.

Modem

______________ network topology is used in wireless networks where communication is carried out via a radio broadcast to a central machine called the access point.

Star

The machines are connected to a common communication line

Bus

Which wireless technology typically supports distances shorter than 30 feet, compared to Wi-Fi’s range of up to 300 feet?

Bluetooth

In this model, processers both request and provide service to each other.

Peer-to-peer (P2P)

Used to obtain private information simply by asking for it.

Phishing

What role does a firewall play in a communication system?

Filtering incoming and outgoing network traffic for security purposes

Monitors network traffic and blocks traffic that triggers its safety rules, providing a barrier between a trusted private network and an untrusted network like the internet.

Firewall

Is a portable personal computer with a folding design.

Laptop

Computers are arranged in a circle with each one connecting to the computers on either side.

Ring

What is a key characteristic of Shielded Twisted Pair (STP) cables compared to Unshielded Twisted Pair (UTP) cables?

STP cables have an insulating sheath that protects against electromagnetic interference

In a _____________ network topology the computers are connected directly to each other as a peer.

Ring

Blocks outgoing messages with certain destination addresses or blocks incoming messages from untrustworthy sources.

Firewall

Is a portable computer typically with touchscreen display and a recharable battery in a thin and flat design.

Tablet Computer

network connecting several computers in a straight line.

Bus

Where the attacker uses all possible combinations of characters to learn a user's password.

Brutal force attack

What units are typically used to measure network bandwidth?

Megabits per second (Mbps) and Gigabits per second (Gbps)

Performed by using an application and a large dictionary text with just words.

Dictionary attack

__________________ provides large pools of shared computers that can be allocated as needed.  (i.e. Amazon's Elastic Computer Cloud, Google Cloud and Google Apps)

Cloud Computing

____________ have basic roles of the client making the requests and the server satisfying the client requests.

Client/Servers