Chapter 7
What type of internet connection does cable cellular provide?
(consists of cells, is provided by companies such as Verizon and AT&T.) Each cell is controlled by a base station, which might include more than one transceiver and antenna on the same tower to support various technologies for both voice and data transmission. Two established cellular technologies are GSM (Global System for Mobile Communications) and CDMA (Code Division Multiple Access). In the United States, Sprint and Verizon use CDMA, while AT&T and T-Mobile—along with most of the rest of the world—use GSM. Long Term Evolution (LTE) and Voice over LTE (VoLTE) provide both data and voice transmissions and are expected to ultimately replace both GSM and CDMA.
What type of internet connection does DSL provide?
(digital subscriber line) A telephone line that carries digital data from end to end and is used as a type of broadband Internet access. (When you make a regular phone call, you dial in as usual. However, the DSL part of the line is always connected (always up) for most DSL services.)
What type of internet connection does ISDN provide?
(integrated Services Digital Network) A broadband telephone line that can carry data at about five times the speed of regular telephone lines. Two channels (telephone numbers) share a single pair of wires. ISDN has been replaced by DSL. (ISDN is an outdated business-use connection to an ISP over dial-up phone lines.)
When would you use whitelists in a SOHO?
(lists of what can be accessed) when you want to enable a list of websites that computers on a local network are allowed to access.
When would you use blacklists in a SOHO?
(lists of what cannot be accessed) when you want to enable a list of websites that computers on a local network are not allowed to access.
What is a LAN?
(local area network) A network bound by routers or other gateway devices that usually covers only a small area, such as one building. (covers a small local area, such as a home, office, or a small group of buildings. LANs can use wired (most likely Ethernet) or wireless technologies (most likely Wi-Fi). A LAN allows workstations, servers, printers, and other devices to communicate and share resources.) (same room, building, or group of buildings)
What is a MAN?
(metropolitan area network) A type of network that covers a large city or campus. (covers multiple buildings in a large campus or a portion of a city, such as a downtown area. It's usually the result of a cooperative effort to improve service to its users. Network technologies used can be wireless (most likely LTE) and/or wired (for example, Ethernet with fiber-optic cabling)) (inside the same metropolitan area) (other side of the city) (government)
What is a PAN?
(personal area network) A small network consisting of personal devices at close range; the devices can include smartphones, PDAs, and notebook computers. (consists of personal devices such as cell phones and laptop computers communicating at close range. PANs can use wired connections (such as USB or Lightning) or wireless connections (such as Bluetooth or Wi-Fi, also called 802.11).) (NFC, Car, AirPods, Infrared)
What is a WAN?
(wide area network) A network or group of networks that span a large geographical area. (covers a large geographical area and is made up of many smaller networks. The best-known WAN is the Internet. Some technologies that connect a single computer or LAN to the Internet include DSL, cable Internet, satellite, cellular WAN, and fiber optic.) (Connecting to another city or country) (In the ground with fiber or copper cable) (satelight)
What is a WMN?
(wireless mesh network) Many wireless devices communicating directly, rather than through a single central device. This technology is commonly used in IoT wireless networks. (thermostats, light switches, door locks, and security cameras, are connected to the network and onto the Internet.) (IoT) (802.11, Zigbee, Z-wave)
Line-of-sight services
*Line-of-sight - Visual path between antennas - high frequencies *Common in metropolitan areas • Cover many homes simultaneously *Also options for non-line-of-sight - lower frequencies *WiMAX networking • Worldwide Interoperability for Microwave Access • Wireless high-speed Internet access
What type of internet connection does cable internet provide?
A broadband technology that uses cable TV lines and is always connected (always up).
What is a mobile hotspot connection?
A location created by a mobile device so that other devices or computers can connect by Wi-Fi to the device and to the Internet.
When would you use static IP addressing?
A permanent IP address that is manually assigned to a computer or other device. static IP addresses are best for businesses, which host their own websites and internet services. Static IP addresses also work well when you have remote workers logging into work via a VPN. Assigning a static IP address to a computer allows it to use the same IP address every time. This is in contrast to having a router assign a dynamic IP address to your computer, where the IP address changes every time you connect and reconnect to the wireless network.
What is a DCHP server?
A protocol used by a server to assign a dynamic IP address to a computer when it first attempts to initiate a connection to the network and requests an IP address.
When is a wired network connection appropriate to use?
A wired network connection is always the most reliable and most secure internet connection. If utilizing a network connection for business, academic or research purposes, use a wired port instead of wireless whenever possible. If your wireless connections is insufficient, you should use a wired connection using an ethernet cable. It is usually a better idea to plug into a wired network line if one is available when doing network- or Internet-intensive activity (For example, streaming video or installing a class-specific application).
How to configure a SOHO?
Always follow the directions of the manufacturer. You can use any computer on the network that uses a wired connection (it doesn't matter which computer) to configure the firmware on the router. You'll need the IP address of the router and the default user name and password to the router setup. To find this information, look in the router documentation or search online for your model and brand of router. (Open your browser and enter the IP address of the router in the address box, The Windows Security box appears. For our router, the default user name and password are both admin, although yours might be different, The main setup page of the router firmware appears in your browser window. Most of the settings you'll need are on the ADVANCED tab. Begin by poking around to see what's available and to find the settings you need. If you make changes, be sure to save them. When finished, click Logout and close the browser window)
When would you use dynamic IP addressing?
An IP address assigned by a DHCP server for the current session only, and leased when the computer first connects to a network. When the session is terminated, the IP address is returned to the list of available addresses. (Instead of one IP address always being yours (a static IP address), your IP address is pulled from a pool of addresses and then assigned to you.)
What are 802.11n standards?
Can use either 5.0-GHz or 2.4-GHz radio frequency with an indoor range up to 70 meters and an outdoor range up to 250 meters (Uses multiple input/multiple output (MIMO), which means an access point can have up to four antennas to improve performance.) Speed - Up to 600 Mbps
How to secure a SOHO?
Change the default SSID, Disable SSID broadcasts, Disable DHCP or use reservations, Use MAC filtering, Use IP filtering, Use the strongest security available on the wireless access point.
What type of internet connection does dial-up provide?
Dial-up or POTS (plain old telephone service) is the least expensive and slowest connection to the Internet. Dial-up connections are painfully slow, but you might still need them when traveling, and they're good at home when your broadband connection is down.
When is a dial-up network connection appropriate to use?
Everyone has a phone line, dial-up connection is available to everyone with a computer and a modem (including a built-in modem), dial-up may be the only choice available for rural or remote areas where a broadband connection is not available, Low cost, Easy setup. (***A+ Core 2***)
What are 802.11b standards?
Longer range of 100 meters (indoor ranges are less than outdoor ranges) and radio frequency of 2.4 GHz (An outdated Wi-Fi standard) (Experiences interference from cordless phones and microwaves.) Speed - Up to 11 Mbps
How do you configure channels (1-11) in a wireless network?
Open your browser and enter the IP address of the router in the address box, The Windows Security box appears. For our router, the default user name and password are both admin, although yours might be different, The main setup page of the router firmware appears in your browser window. Most of the settings you'll need are on the ADVANCED tab. Then find your bandwidth (2.4 GHz or 5.0 GHz) and select the best frequency or select auto)
How do you configure frequencies in a wireless network?
Open your browser and enter the IP address of the router in the address box, The Windows Security box appears. For our router, the default user name and password are both admin, although yours might be different, The main setup page of the router firmware appears in your browser window. Most of the settings you'll need are on the ADVANCED tab. Then go to wireless setup and choose which frequency or bands your router supports. (2.4 GHz used by 802.11 b/g/n standards and 5 GHz used by 802.11 a/n/ac)
What type of internet connection does satellite provide?
People who live in remote areas and want high-speed Internet connections often have limited choices. Satellite access is available from pretty much anywhere. Internet access by satellite is available even on airplanes. Passengers can connect to the Internet using a wireless hotspot and satellite dish on the plane. A satellite dish mounted on top of your house or office building communicates with a satellite used by an ISP offering the satellite service
What are 802.11g standards?
Same range and frequency as 802.11b but with faster speeds up to 54 Mbps (An outdated Wi-Fi standard that was compatible with and replaced 802.11b.) Speed - Up to 54 Mbps
When is a VPN network connection appropriate to use?
Security on Public Wi-Fi, Data Privacy From Your Internet Service Provider, Data Privacy From the Apps and Services You Use, Data Privacy From Your Government, Access to Any Content in Any Place, Security When Working Remotely, Easy to Use, Adaptable to Numerous Smart Devices, Smart Savings
How do you install a wireless network?
Select an Internet service provider, Select a wireless router and modem, Connect your modem to a cable outlet, Connect the router and the modem, Connect your modem and router to a power source, Connect to your wireless network from your phone, computer, or tablet
What are 802.11a standards?
Short-range up to 50 meters with radio frequency of 5.0 GHz (No longer used.) Speed - Up to 54 Mbps (typically channels 1, 6, and 11)
When would you use port forwarding in a SOHO?
Suppose you're hosting an Internet game or website or want to use Remote Desktop to access your home computer from the Internet. In these situations, you need to enable (open) certain ports to certain computers so that activity initiated from the Internet can get past your firewall. (Use for gaming consoles - to make internet connectivity faster)
What type of internet connection does fiber provide?
The technology connects a dedicated line from your ISP to your place of business or residence. This dedicated line is called a point-to-point (PTP) connection because no other business or residence shares the line with you. (Television, Internet data, and voice communication all share the broadband fiber-optic cable, which reaches all the way from the ISP to your home.)
When would you use content filtering in a SOHO?
The use of a program to screen and/or exclude access to web pages or email deemed objectionable. Content filtering is used by corporations as part of their firewalls, and also by home computer owners.
What is tethering?
To connect a computer to a mobile device that has an Internet cellular connection so that the computer can access the Internet by way of the mobile device.
When would you use a DMZ in a SOHO?
Use DMZ Host as a last measure as a troubleshooting tool, Use DMZ Host for applications that requires random port to be opened, When you need to host a home based web server, Use DMZ Host for gaming consoles. (if port-forwarding fails to make a difference)
What are 802.11ac standards?
Uses the 5.0-GHz radio frequency and has the same ranges as 802.11n, except performance stays stronger at the edges of its reach (Supports up to eight antennas and supports beamforming, which detects the locations of connected devices and increases signal strength in those directions.) Speed - Theoretically up to 7 Gbps, but currently at 1.3 Gbps
When would you use parental controls in a SOHO?
When parents want to manage content allowed from the Internet and monitor websites and content accessed.
How do you configure encryption in a wireless network?
When you set a security key, routers by default encrypt wireless transmissions. You can change the encryption protocols used or disable encryption. (Encrypting transmissions increases security but slows down the network; disabling encryption can improve performance and might be appropriate when you are not concerned about transmissions being hacked.) The three main security standards for 802.11 wireless networks are: (WEP (wired equivalent privacy), WPA (Wi-Fi protected access), WPA2 (Wi-Fi protected access 2), WPA3 (Wi-Fi protected access 3)) Open your browser and enter the IP address of the router in the address box, The Windows Security box appears. For our router, the default user name and password are both admin, although yours might be different, The main setup page of the router firmware appears in your browser window. Most of the settings you'll need are on the ADVANCED tab. To configure Wi-Fi encryption for our sample router, first notice in the figure above, that this router supports two wireless frequencies or bands: 2.4 GHz used by 802.11 b/g/n standards and 5 GHz used by 802.11 a/n/ac. Each band can have its own encryption type and security key. For the most flexibility, set both bands to allow any encryption standard the router supports. For our router, that's WPA-PSK [TKIP] + WPA2-PSK [AES] encryption. This setting means a wireless connection will use WPA2 encryption unless an older device does not support it, in which case the connection reverts to WPA encryption. Alternately, for best security, set both bands to require the highest standard the router supports. For our router, that's WPA2-PSK [AES]. Using this setting, the router will reject any older devices not capable of supporting this encryption standard. Click Apply to save your changes.
How do you configure Wi-Fi 802.11 standards in a wireless network?
Wireless computers and other devices on the wireless LAN (WLAN) must support the latest wireless standard for it to be used. If not, the connection uses the latest standard both the WAP and client support. (When configuring your wireless access point, it's important you are connected to the router using a wired connection. If you change a wireless setting and you are connected wirelessly, your wireless connection will be dropped immediately and you cannot continue configuring the router until you connect again.)
When is a wireless network connection appropriate to use?
Wireless networks enable multiple devices to use the same internet connection remotely, as well as share files and other resources. They also allow mobile devices, such as laptops, tablets, and mobile phones to move around within the network area freely and still maintain a connection to the internet and the network. (Increased Mobility, Installation Speed and Simplicity, Wider Reach of the Network, More Flexibility, Reduced Cost of Ownership over Time, Increased Scalability)
When is a cellular network connection appropriate to use?
You can only connect to a public WiFi network or a network that is not secure, The WiFi network is slow, You have a weak WiFi signal, You are in your home country, You have an unlimited cellular data plan
How to install a SOHO?
decide where to physically place a router(consider its physical security), If the router will be used as a wireless access point, make sure it is centrally located to create the best Wi-Fi hotspot for users. For physical security in a small business, don't place the router in a public location, such as the lobby. For best security, place the router behind a locked door accessible only to authorized personnel in a location with access to network cabling. The indoor range for a Wi-Fi hotspot is up to 70 meters; this range is affected by many factors, including interference from walls, furniture, electrical equipment, and other nearby hotspots. For the best Wi-Fi strength, position your router or a stand-alone wireless access point in the center of where you want your hotspot, and know that a higher position (near the ceiling) works better than a lower position (on the floor). For routers that have external antennas, raise the antennas to vertical positions. Plug in the router and connect network cables to devices on the local network. Connect the network cable from the ISP modem or other device to the uplink port on the router.