Chapter 7

NAS devices handle the following tasks:

- Automatically back up all computers connected to the network - Act as a repository for files to be shared across the network - Function as an access gateway to allow any computer on the network to be accessed from a remote location via the Internet

Is a home network the same kind as the one at the corporation where I work?

No. Most companies use client/server networks. You'll be setting up a P2P network

Where is the Wireless Network Connection button located on the desktop?

On the Windows Taskbar

HaLow

Operates on the 801.11ah standard. Twice the range of current Wi-Fi and is also more robust (can easily penetrate walls or other barriers)

The type of network used for communication among a laptop and smartphone using Bluetooth is a

PAN

P2P

Peer-to-peer; node can communicate directly with every other node on the network

Which of the following statements is TRUE?

Router firmware should be kept up to date

Changing the ________ from the default name given by the manufacturer can make it more difficult for hackers to access your network.

SSID

Benefits of Networks

Sharing an Internet connection, sharing printers and other peripherals, sharing files, and common communications (must be running same OS)

Network Operating System (NOS)

Software that handles requests for information, Internet Access, and the use of peripherals for network nodes, providing the services necessary for the computers on the network to communicate. Examples include: Windows Server and SUSE Linux Enterprise Server

Wide Area Network (WAN)

Spans a large physical distance. The Internet is the largest version if this, which covers the globe. It's also a networked collection of LANs. If a school has multiple campuses located in different towns, each with its own LAN, connecting the LANs of each campus by telecommunications lines allows the users of the LANs to communicate. All the connected LANs would be described as a single WAN

4G

Stands for 4th Generation. The latest mobile communication standard with faster data transfer rates than 3G

Firmware

System software that controls hardware devices

Backward Compatibility

The accommodation of current devices being able to use previously issued software standard in addition to the current standard

Local Administration

The configuration and maintenance of the network must be performed on each individual computer attached to the network. Peer-to-Peer (P2P) is an example

Network Architectures (network designs)

The design of a computer network; includes both physical and logical design. Can be classified by the following: the distance between nodes, the way in which the network is managed (or administered), or the set of rules (or protocol) used to exchange data between network nodes

Disadvantage of Networks

The initial time it takes to set up the network

Data transfer rate (bandwidth)

The maximum speed at which data can be transmitted between two nodes on a network; measured in megabits per second (Mbps) or gigabits per second (Gbps)

Unshielded twisted pair (UTP) cable

The most popular transmission media option for Ethernet networks. It is composed of four pairs of wires that are twisted around each other to reduce electrical interference

What kind of wire do I use to set up an Ethernet network?

The most popular transmission media option for wired home Ethernet networks is unshielded twisted-pair (UTP) cable

How can you recognize an unsecured wireless network?

The network icon will have a warning symbol.

Piggybacking

The process of connecting to a wireless network without the permission of the owner of the network

Peer-to-Peer (P2P) sharing

The process of users transferring files between computers. Examples being BitTorrent

Transmission Media

The radio waves or the physical system (cable) that transports data on a network. Can be wired or wireless

How many UTP cables?

Three; Cat 5E, Cat 6, and Cat 6A

How do I share an Internet connection on an Ethernet network?

To share an Internet connection on an Ethernet network, you need a router.

What is the most common type of transmission media in wired HOME networks?

Unshielded Twisted Pair cable

What wired transmission is used on a network?

Unshielded Twisted Pair cable, Twister Pair cable, Coaxial cable, Fiber-optic cable

Which of the following cables is the most popular transmission media for Ethernet networks?

Unshielded twisted-pair (UTP)

How to secure wireless network?

Use encryption and security protocols, change your network name (SSID), disable SSID broadcast, change default password, create a passphrase, implement media access control, limit your signal range, apply firmware upgrades, disable remote access, keep your router firmware up to date

How do nodes connect to each other?

Via transmission media

Which of the following is NOT an encryption security protocol?

WIP

How to get free Wi-Fi access?

Websites like Wi-Fi-FreeSpot, apps like WifiGet, and ISPs which may provide free hotspot service

802.11ad is known as?

WiGig (7 gigabits at 60 GHz frequencies)

Which of the following is LEAST LIKELY to be an obstacle for a wireless network

Window

What transmission media is used on a wireless network?

Wireless (wi-fi)

Can I set up a wireless network at home?

You can have a wireless network only if each node connected to the network has a wireless network adapter attached to it or installed in it.

How can I share an Internet connection on a wireless network?

You'll need a special router to share an Internet connection on a wireless network.

What are the risks of an unsecured wireless network?

Your wireless network can be piggybacked or hacked

The maximum speed at which data can be transmitted between two nodes on a network is called the ____

bandwidth

Network Adapters _____.

enable nodes in a network to access the network and to communicate with each other

The fastest broadband Internet service is usually

fiber-optic

A(n) ____ is a hardware or software solution that helps protect your network.

firewall

Installing a(n) ________ is the first step in securing your network from unwanted intruders.

firewall

As your wirelessly connected device moves further away from the wireless router, what happens to the signal

it decreases

The device used to connect a network to the Internet is called a

modem

Two or more computers that are connected via software and hardware so that they communicate with each other is called a(n) ____

network

Bundled data is referred to as a(n) ____.

packet

The most common home network is a?

peer-to-peer network (P2P)

Connecting to a wireless network without the owner's permission is known as ________.

piggybacking

WEP and WPA are examples of ________.

protocols that use encryption to protect wireless transmissions

A ____ would be a good device to install if you need a wireless solution to improve a weak Wi-Fi signal in an area far from the router your home.

range extender

Which device might you use to improve your Wi-Fi signal without using a cable to connect to the router

range extender

A navigation device that transfers packets of data between two or more networks is called a ______.

router

A(n) ____ is used to send data between a home network and the Internet

router

The computer that provides information or resources to the client computers on the network is called a(n) _____

server

If your router does not have enough wired ports to add more devices, you can install a ________ to add extra ports to your network.

switch

The device that receives data packets and sends them to the intended node on the same network is a(n) _____

switch

The actual data transfer rate is called ____.

throughput

How to see what network adapters are installed in your computer?

use Device Manager utility

When setting up a network, which of the following is the suggested order for turning on equipment?

Broadband mode, router, computers, and TVs

Is there a good reason to set up a network for two computers?

By setting up a network, you can share a broadband Internet connection.

Twisted pair cable

Cable made of copper wires that are twisted around each other and are surrounded by a plastic jacket (such as traditional home phone wire)

Which of the following tasks should you not consider performing on a public-accessed secured network?

Check your checking account balance.

How would you set up your connection so that it connects to a particular wireless network every time you're in the area without requesting any manual intervention?

Click the connection and then click the Connect automatically check box.

_____ cable consists of a single copper wire surrounded by layers of plastic and is commonly used to connect TVs

Coaxial

Mobile Broadband

Connections to the Internet through the same cellular network that cell phones use to get 3G or 4G Internet access

What is the term for how fast data moves through networks?

Data transfer rate (also called bandwidth)

Cat 6A

Designed for ultrafast Ethernet networks that run at speeds as fast as 10 Gbps

What would you use to see what network adapters are installed in your Windows computer?

Device Manager Utility

Mobile Hotspot

Devices that enable you to connect more than one device to the Internet; they require access to a data plan. Most smartphones have this capability built-in

What special problems can occur with wireless networks?

Distance from the router, as well as floors, walls, and large metal object s between a device and the router can interfere with wireless connectivity

What steps can be taken to secure a wireless network?

Ensure a firewall is installed and make changes to several settings with your router and on your network

Most home networks use the ________ standard

Ethernet

What network standard is used in my home network?

Ethernet Network

Which of the following cables is composed of plastic or glass fibers that transmit data at extremely fast speeds?

Fiber-optic

Periodically applying ________ upgrades fixes known problems in the ROM of a router or other networking devices.

Firmware

What Windows feature shares files with other computers on a network?

HomeGroup

Which Windows feature facilitates sharing peripherals and info on a home network?

HomeGroup

What are ways to improve a wireless signal

Installing an access point or wireless range extender are good options

Who developed the Ethernet Protocol?

Institute of Electrical and Electronics Engineers (IEEE)

Fiber-optic service

Internet access that is enabled by transmitting data at the speed of light through glass or plastic fibers

100 GbE is used for major transmission lines of the Internet known as the?

Internet backbone

Network Administration

Involves tasks such as (1) installing new computers and device, (2) monitoring the network to ensure it's performing efficiently, (3) updating and installing new software on the network, and (4) configuring or setting up proper security for a network

Which of the following helps to protect a wireless network from piggybacking?

Limiting the wireless signal range

How to know what's connecting your to router AND how to determine what's connected to your router

Log in to an account associated with your router's IP address

How can you tell what wireless devices are connected to your router?

Log in to the router's IP address and check the configuration page.

A(n) ________ address is a specific/unique number for each network adapter.

MAC

Home network servers

More sophisticated type of NAS device. It's designed to store media, share media across the network, and back up files on computers connected to a home network

Internet of Things (IoT)

A multitude of devices connected to the Internet wirelessly. The interconnection of uniquely identifiable embedded computing devices that transfer data over a network without requiring human-to-human or human-to-computer interaction, Examples being: some refrigerators, LCD touch screen, network adapters, etc etc.

Peer-to-Peer (P2P) network

A network in which each node connected to the network can communicate directly with every other node on the network

Local Area Network (LAN)

A network in which the nodes are located within a small geographical area. Examples include a network in a computer lab at school or at a fast food restaurant

Service Set Identifier (SSID)

A network name that wireless routers use to identify themselves

Ethernet Network

A network that uses the Ethernet protocol as the means (or standard) by which the nodes on the network communicate

Personal Area Network (PAN)

A network used for communication among devices close to one person, such as smartphones and tablets using wireless technologies such as BlueTooth and Wifi. Hotspots are an example

Some of my devices don't need wireless and would work better with a wired connection. Are there different types of wired networks I need to choose from?

Most wired networks for the home are Ethernet networks.

Coaxial Cable

A single copper wire surrounded by layers of plastic insulation, metal sheathing, and a plastic jacket; used mainly in cable television and cable Internet service

Network Attached Storage (NAS) device

A specialized computing device designed to store and manage network data. Examples being AirPort Time Capsule for Apple cpmputers

Home Area Network (HAN)

A specific type of LAN located in a home. Used to connect all of a home's digital devices, such as computers, peripherals, phones, gaming devices, digital video recorders (DVRs), and televisions

Digital Subscriber Line (DSL)

A type of connection that uses telephone lines to connect to the Internet and that allows both phone and data transmission to share the same line

Client/Server Network

A type of network that uses servers to deliver services to computers that are requesting them (clients). They can usually be identified by having 10 or more nodes

Satellite Internet

A way to connect to the Internet using a small satellite dish, which is placed outside the home and is connected to a computer with coaxial cable. The satellite company then sends the data to a satellite orbiting Earth. The satellite, in turn, sends the data back to the satellite dish and to the computer

Which of the following would help improve a wireless signal throughout a network?

Access Point

Why is wireless slower than wired?

- Wireless bandwidth is shared among devices. - Wireless signals are more susceptible to interference from magnetic and electrical sources. - Other wireless networks (such as your neighbor's network) can interfere with the signals on your network. - Certain building materials (such as concrete and cinderblock) and metal (such as a refrigerator) can decrease throughput. - Throughput varies depending on the distance between your networking equipment. - Wireless networks usually use specially coded signals to protect their data, whereas wired connections don't protect their signals. This process of coding signals can slightly decrease throughput, although once coded, data travels at usual speeds.

When determining how big of data plan you need to buy, what should you look to assess the situation?

- download apps, stream music, or play online games? - watch streaming video? - download files attached to e-mails or from your company website? - use apps that are communicating with the Internet?

Most home wireless routers can support up to?

253 wireless connections

Maximum range of 802.11n or 802.11ac?

350 feet

Which of the following is currently the fastest wireless standard?

802.11ac

Gigabit Ethernet (GbE)

802.3. The most commonly used wired Ethernet standard deployed in devices designed for home networks; provides bandwidth of up to 1 Gbps

Cat 5E

A UTP cable commonly found in wired Ethernet networks, designed for 100 Mbps-wired Ethernet networks

Cat

A UTP cable type that provides more than 1 Gbps of throughput

Cable Internet

A broadband service that transmits data over coaxial cables

Fiber-optic cable

A cable that transmits data via light waves along glass or plastic fibers

Central Administration

A centrally administered network, tasks performed from one computer can affect the other computer on the network

Internet Service Providers (ISPs)

A company that specializes in providing Internet Access. May be specialized providers, like Juno, or companies that provide other services in addition to Internet access (such as phone and cable television)

Data Plan

A connectivity plan or text messaging plan in which data charges are separate from cell phone calling charges and are provided at rates different from those for voice calls

Node

A device (printer, game console, or router) connected to a network such as a computer, a peripheral (such as a printer), or a communications device (such as a modem)

Network-ready device (internet-ready device)

A device (such as a printer or an external hard drive) that can be attached directly to a network instead of needing to attach to a computer on the network

Switch

A device for transmitting data on a network. It makes decisions, based on the media access control address of the data, as to where the data is to be sent

Network Navigation Device

A device on a network such as a router or switch that moves data signals around the network

Wireless Range Extender

A device that amplifies your wireless signal to get it out to parts of your home that are experiencing poor connectivity

Modem

A device that connects a network to the Internet

Network Adapter

A device that enables the computer (or peripheral) to communicate with the network using a common data communication language, or protocol

Access Point

A device that is connected by a cable to the main router that amplifies a wireless signal to otherwise unreachable locations

Router

A device that routes packets of data between two or more networks

Smart home

A dwelling in which devices and appliances are automated or controlled by apps

Service Message Block (SMB) protocol

A file sharing protocol incorporated into all operating systems that enables users at non-Windows computers to access data in Windows machines

Network

A group of two or more computers (or nodes) that are configured to share information and resources such as printers, files, and databases

Broadband

A high-speed Internet connection such as cable, satellite, or digital subscriber line (DSL). Has a transmission rate that ranges from 1 to 500 Mbps

Metropolitan Area Network (MAN)

A large network designed to provide access to a specific geographical area, such as an entire city. Many U.S. cities are now deploying them to provide Internet access to residents and tourists. Some employ WiMAX wireless technology that extends local Wi-Fi networks across greater distances

To function, all networks must include:

A means to connect to the nodes on the network, special hardware devices that allow the nodes to communicate with each other and to send data, and software that allows the network to run

A(n) ____ is a wireless connectivity device that is connected with a wire to the router and extends a Wi-Fi signal in a designated area

Access point

Which of the following is NOT used to protect a wireless network?

Activating packet switching

Which of the following allows you to connect to the Internet wirelessly?

All of the above (mobile hotspot, 4G LTE, WiFi)

Which of the following is a reason to establish a network?

All of the above (to share an Internet connection, to share files, to share peripherals)

Repeater

Amplifies signals on long cable runs

Wireless ISP

An ISP thar provides service to wireless devices such as smartphones

Network Interface Card (NIC)

An expansion card that enables a computer to connect other computers or to a cable modem to facilitate a high-speed Internet connection

Wi-Fi Alliance

An organization that manages Wi-Fi standards

_____ is another name for data transfer rate

Bandwidth

Wireless Networks (Wi-Fi)

Based on the IEEE 802.11 standard, established by IEEE

Why would you want to disable SSID broadcast?

Both A and B (to make it difficult for a neighbor to connect to your network AND to make it more difficult for hackers to detect your network)

What would the consequences be to you if your neighbors in an apartment complex inadvertently piggyback on your wireless network, even if they did nothing malicious?

My network would slow down