ITEC Chapter 4

Select the statements that are true regarding a Wi-Fi's SSID

- An SSID is the Wi-Fi's name - Most routers transmit the SSID every few seconds so roaming devices can find the signal - In home networks, after all legitimate devices have connected to the SSID once, transmitting the SSID is unnecessary

Select what's true about troubleshooting a network

- Check to make sure the cables are not damaged and that all cables are plugged in properly - A poor signal can also be an indicator that the hardware may be old or improperly positioned - A device that isn't positioned properly can cause weak signals and system issues

Select what's true about troubleshooting network hardware issues

- If your network isn't working it is a good idea to check the status of the indicator lights. - Sometimes firmware updates can occur that can cause a network outage. If you experience trouble you may need to reboot the hardware device - A device that isn't positioned properly can cause weak signals and system issues

Select what's true about WANs

- Large organizations with many offices located across the globe often have individual LANs in each location that need to be connected in order to share data and information - When two or more LANs have been connected using a public network a WAN or Wide Area Network is created - The largest WAN on earth is the Internet

Select what's true about client/server networks

- Server-based models are popular because they provide more security than a peer-to-peer network - In this type of network when a client requests information or access to the Internet the request is controlled by the server - Server-based networks are designed to have individual computers and devices connected to the network interact through a central server computer

Select what's true about how circuit switching works when you make a traditional land line based phone call

- When you pick up the receiver which creates an open a connection to the local telephone switch - When you dial a number, then the switch connects to other switches along the PSTN. This forms a physical path between your phone and the person you are calling - When the call is received a circuit is established and will remain open for the entire length of your call. As long as the circuit remains open, no one else can use the telephone line

Select the expenses found on a typical cell phone bill

-Line charges -Data plan charges -Taxes and surcharges

Select the statements that are true regarding switches

-Switches connect computers and other devices within a network -Switches are usually integrated in the routers of home networks -Switches ensure that correct data is transferred to and from the appropriate devices in networks

What 3 items are needed to install a home WiFi network

-an Internet signal -a modem -a router

Select what's true regarding dual band routers

-can transmit Wi-Fi signals in the 2.4 GHz frequency range -can transmit Wi-Fi signals in the 5.0 GHz frequency range -minimizes the impact of interference from microwave ovens and car alarms

Select the characteristics of a router

-connects networks -provides hardware firewall protection -usually incorporates a switch

Select the characteristics of fiber optic lines

-made of 1 or thousands of fibers -high-speed transmission

Select the reasons to purchase a prepaid phone

-no long-term contracts -useful if you just need a phone for calling or texting -useful if you just need a phone for emergencies

Select the characteristics of a modem

-usually provided by the ISP -converts analog signals into digital signals -converts digital signals into analog signals

List in order the steps required to install a home Wi-Fi network

1. Connect the incoming Internet signal to the modem provided by your ISP 2. Plug in the modem's electrical cord and turn on the modem 3. Connect the modem to the router using a high-quality Ethernet cable (if required, some modems include integrated routers) 4. Plug in the router's electrical cord and turn on the router (if necessary) 5. Turn on your computer and locate your new Wi-Fi signal

Remote access connections must be secured using authentication and encryption software. ______ software confirms the identity of the user or computer system

Authentication

What technology allows for the electronic communication of business oriented transactions and information between people and organizations?

EDI

EDI stands for ___

Electronic Data Interchange

Which transmission media has the largest bandwidth

Fiber optic

A collection of computers that are connected in a small geographic area such as an office, college campus, or in your home is called a _____

LAN

A switch distinguishes between various devices within a network by their __ addresses

MAC

Broadband is measured in _____

Mbps

Match the item with its function

Modem-converts analog signals into digital signals and digital signals into analog signals Router-connects 2 networks MAC address-identifies a device within a network Switch-connects devices within a network

Transmission media can be either wired or wireless

True

Select the methods of connecting a Smartphone to the Internet

Using a cellular data plan

Sprint, T-Mobile, ATT & ___ are the major national cell phone providers in the U.S

Verizon

Select the major U.S. cell phone providers

Verizon, ATT, T-Mobile, and Sprint

When two or more LANs have been connected using a public network a _____ is created.

WAN

The wireless network privacy standard that was introduced in 2003 but was quickly replaced (due to numerous vulnerabilities) was known as ___

WPA

In addition to activating ___ protection, it's a good idea to disable your router's SSID transmission once all your devices are connected

WPA2

The capacity of a particular transmission medium is called its _____

bandwidth

The volume of data that can be carried on an Internet transmission media in an amount of time is called _____

bandwidth

An Internet signal that has enough bandwidth to allow multiple computers to be connected to the same router is called a ___ signal

broadband

A computer that requests resources such as a web page, spreadsheet, image file, or services from another computer on a network is called a _____

client

In a server-based network the individual computers and devices are called _____

clients

Being able to surf the Web, watch videos, and listen to steaming audio is why cell service with a ___ plan is extremely popular in the United States

data

Routers that can send Internet signals over 2 distinct frequencies are called _____ routers

dual band

A security system separating 2 networks or even computers on the same network is called a ___

firewall

When determining how much cell phone data you need it is important to consider

how much data you currently use

The word modem stands for ____

modulator-demodulator

Fiber optic cable is _____ expensive than coaxial cable to install

more

A _____ is a group of two or more devices/computers connected together to allow for the exchange and information and for the sharing of resources such as printers

network

Unlike circuit switching, data transfer with ___ doesn't rely on a dedicated physical path

packet switching

If you just need a phone for emergencies, you might consider a ___ phone

prepaid

A virtual _____ network (VPN) creates a secure connection between 2 computers.

private

The device that connects 2 networks is a _____

router

Your ___ can provide hardware firewall protection for your home network where it connects to the ISP's network, just as ISP networks have firewalls where they connect to the Internet

router

Because of their popularity and bandwidth demands of video streaming, _____ data plans are more expensive than they were in the past

unlimited