CIS Ch.7

An emerging standard of wireless Ethernet, also known as 802.11ad, is
WiGig
The type of network for communication among a laptop and smartphone using Bluetooth is a
PAN (personal area network)
The fastest broadband Internet service is usually
Fiber-optic
Which of the following allows you to connect to the Internet wirelessly?
A. WiFi
B. 4G LTE
C. Mobile hotspot
D. All of the above
D. All of the above
The device used to connect a network to the Internet is called a
Modem
What would you use to see what network adapters are installed in your Windows computer?
Device Manager utility
What device would you use to amplify your wireless signal?
Wireless range extender
Why would you want to disable SSID broadband?
To make it more difficult for hackers to detect your network and nearly impossible for a neighbor to connect to your netowrk
To share files between computers on a Windows home network, you must
Create a HomeGroup
How can you tell what wireless devices are connected to your router?
Log in to the routers’s IP address and check the configuration page
Broadband
Often referred to as “high speed internet” refers to the type of connection that offers a faster means to connect to the internet
A broadband connection is a high-speed Internet connection such as cable, satellite, or digital subscriber line (DSL)
. Broadband usually has a data transmission rate of 256 Kbps (kilobits per second) or greater
DSL
uses a standard phone line to connect your computer to the Internet
Cable
uses your television’s cable service provider to connect to the Internet
Fiber-optic service
uses plastic or glass cables to transfer the data at the speed of light
Satellite
is used in mostly rural or mountain areas that can’t get DSL, cable, or FiOS
DSL Modem
separate signals into voice and data signals so they can travel at the same time on the phone line
Data transfer rate
the maximum speed at which data can be transmitted between two nodes on a network
Throughput
the actual speed of data transfer that is achieved
Mobile broadband
connects you to the Internet through the same cellular network that cell phones use to get 3G or 4G Internet access
Piggybackers are those who ________.
Connect to a wireless network without the owner’s permission
A(n) ________ address is a specific/unique number for each network adapter.
MAC
A ________ is hardware or software that protects a wired network from intruders.
Firewall
WEP and WPA are examples of ________.
Protocols that use encryption to protect wireless transmissions
What is an important safety precaution for preventing unauthorized access to your router?
-Installing antivirus software
-Installing spyware detection software
-Changing the default router password
Which of the following is NOT used to protect a wireless network?
A. Changing network name
B. Activating packet switching
C. Using security protocols
D. Disabling SSID broadcast
B. Activating packet switching
Which of the following helps to protect a wireless network from Piggybacking?
A. Deactivating packet switching
B. Purchasing antivirus software
C. Placing the router out of sight
D. Limiting wireless signal range
D. Limiting wireless signal range
Which of the following is FALSE?
A. You can connect to any wireless network your computer detects.
B. Your neighbor may be able to access your wireless network.
C. Encryption makes it difficult to connect to a wireless network.
D. Using default passwords makes it easier to hack into a router.
A. You can connect to any wireless network your computer detects
Which of the following statements is TRUE?
A. Not broadcasting a wireless network’s HTML helps to protect it.
B. Router firmware should be kept up to date.
C. Wireless networks cannot be protected.
D. A firewall encrypts data.
B. Router firmware should be kept up to date.
Which of the following would NOT be a benefit of networking computers?
A. sharing printers and other peripherals
B. sharing files
C. sharing an Internet connection
D. sharing software licenses
D. Sharing software licenses
Bethany is in her home, watching a video she took on vacation, while her brother is playing FIFA Soccer on his Xbox, and her dad is checking stock quotes on his iPad. What kind of network does this family have?
A. P2P network
B. Client/server network
C. both A and B
D. neither A and B
A. P2P network
What two devices are often combined into one device in a small network to connect the home network to the Internet and to share the connection between devices on the network?
Modem and router
Which of the following is used to access the Internet when WiFi is not available?
A. mobile hotspot
B. 3G Internet access
C. 4G LTE Internet access
D. all of the above
D. all of the above
Which of the following should you NOT do to secure a wireless network?
A. Keep the default network name and router password.
B. Create a security encryption passphrase.
C. Implement media access control.
D. Disable SSID broadcasting.
A. Keep the default network name and router password
Which of the following might cause interference or poor connectivity between nodes on a wireless network?
A. nodes that are too far apart
B. concrete walls
C. some appliances
D. all of the above
D. all of the above
T/F
802.11ac is the current wireless Ethernet standard.
True
T/F
4G is the latest WiFi standard.
False
T/F
Actual data throughput is usually higher on wireless networks than on wired networks.
False
T/F
Data is sent through the network in bundles called packages.
False
Network
Two or more computers that are connected via software and hardware so they can communicate with each other
Node
Each device connected to a network
Network administration
Involves tasks such as
1) installing new computers and devices
2) monitoring the network to ensure it is performing efficiently
3) updating and installing new software on the network and
4) configuring, or setting up, proper security for a network
Data transfer rate (also called bandwidth)
The maximum speed at with data can be transmitted between two nodes on a network; usually measured in megabits per second (Mbps)
Network architecture
The design of a computer network; includes both physical and logical design
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
Local are network (LAN)
a network in which the nodes are located within a small geographic area
Home area network (HAN)
a specific type of LAN located in a home that’s used to connect all of its digital devices
Metropolitan area network (MAN)
a large are network (WAN) that links users in a specific geographic area such as an entire city
Wide area network (WAN)
a network made up of local area networks (LANs) connected over long distances
Client/server network
A type of network that uses servers to deliver services to computers that are requesting them (clients)
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
Ethernet network
A network that uses the Ethernet protocol as the means (or standard) by which the nodes on the network communicate
Gigabit Ethernet
The most commonly used wired Ethernet standard deployed for home networks; provides bandwidth of up to 1 Gbps
Wireless fidelity (WiFi)
The 802.11 standard for wireless data transmissions established by the Institute of Electrical and Electronics Engineers (EEE)
Backwards compatibility
The accommodation of current devices being able to use previously issued software standards in addition to the current standards
Transmission media
The radio waves or the physical system (cable) that transports data on a network
Twisted-pair cables
Cables made of copper wires that are twisted around each other and are surrounded by a plastic jacket (such as traditional home phone wire)
Unshielded twisted-pair (UTP) cable
The most popular transmission media option for Ethernet networks. UTP cable is composed of 4 pairs of wires that are twisted around each other to reduce electrical interference
Coaxial cable
A single copper wire surrounded by layers of plastic insulation, metal sheathing, and a plastic jacket; used mainly cable TV and cable Internet service
Fiber-optic cable
A cable that transmits data at close to the speed of light along glass or plastic fibers
Cat 6 cable
A UTP cable type that provides more than 1 Gb/s of throughput
Network adapter
A device that enables the computer (or peripheral) to communicate with the network using a common data communication language, or protocol
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
Modem
A device that connects a network to the Internet
Packets
A small segment of data that’s bundled for sending over transmission media. Each packet contains the address of the computer or peripheral device to which it’s being sent
Network navigation device
A device on a network such as a router or switch that moves data signals around the network
Router
A device that routes packets of data between two or more networks
Switch
A device for transmitting data on a network. A switch makes decisions, based on the media access control address of the data, as to where the data is to be sent
Internet of Things (IoT)
The interconnection of uniquely identifiable embedded computing devices that transfer data over a network without requiring human-to-human or human-to-computer intersection
Network operating system (NOS)
Software that handles requests for information, Internet access, and the use of peripherals for the rest of the network node, providing the services necessary for the computers on the network to communicate
Internet service providers (ISP)
A company that specializes in providing Internet access. ISPs may be specialized providers or companies that provide other services in addition to Internet access
Cable internet
A broadband service that transmits data over coaxial data
DSL (digital subscriber line)
A type of connection that uses telephone lines to connect to the Internet and that allows both phone and data transmissions to share the same line
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 the Earth. The satellite, in turn, sends the data back to the satellite dish and to the computer
Mobile broadband
Connection to the Internet through the same cellular network that cell phones use to get 3G or 4G Internet access.
4G
The latest mobile communication standard with faster data transfer rates than 3G
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
Network-attached storage (NAS) device
A specialized computing device designed to store and manage network data
Home network server
A device designed to store media, share media across the network, and back up files on computers connected to a home network
Smart home
A house in which devices and appliances are automated or controlled by apps
Wireless range extender
A device that amplifies your wireless signal to get it out to parts of your home that are experiencing poor connectivity
Piggybacking
The process of connecting to a wireless network without the permission of the owner of the network
Service set identifier (SSID)
A network name that wireless routers use to identify themselves
Firmware
System software that controls hardware devices