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