MD10Mark McClain

 

True/False††††††††† Mark T for True and F for False. If False, rewrite the statement so that it is True.

__T__1. All types of computers and mobile devices serve as sending and receiving devices in a communications system.

__F__2. Files on an intranet also are not accessible from the Internet.

__T__3. Disadvantages of BANs include data validity and security.

__T__4. A peer-to-peer (P2P) network typically connects fewer than 10 computers.

__T__5. Voice and video calling require large amounts of bandwidth.

__F__6. UWB does not requires line-of-sight transmission, so its technology is more widespread as IrDA.

__T__7. For successful communications with NFC devices, the devices or objects must touch or be placed within an inch or two of each other.

__T__8. DSL transmits on existing standard copper phone wiring.

__F__9. Large corporations, phone networks, the Internet, and other networks with large amounts of traffic use T3 lines.

__F__10. A broadband modem is a communications device that sends and receives data and information to and from a digital line.

__T__11. Although some routers may be able to connect more than 200 wired and/or wireless computers and mobile devices, the performance of the router may decline as you add connections.

__T__12. With satellite Internet connections, uplink transmissions usually are slower than downlink transmissions.

 

Match the terms with their definitions.


__F__1. bandwidth

__H__2. client

__G__3. Ethernet

__I__4. latency

__J__5. LTE

__D__6. packet sniffer software

__A__7. protocol

__B__8. network standard

__E__9. TCP/IP

__C__10. value-added network (VAN)

 

a.       standard that outlines characteristics of how two devices communicate on a network

b.       guidelines that specify the way computers access the medium to which they are connected, the type(s) of medium used, the speeds used on different types of networks, and the type(s) of physical cable and/or the wireless technology used

c.       third-party business that provides networking services, such as EDI services, secure data and information transfer, storage, or email

d.       program that monitors and logs packet traffic for later analysis

e.       network protocol that defines how messages are routed from one end of a network to the other, ensuring the data arrives correctly

f.        the amount of data, instructions, and information that can travel over transmission media

g.       network standard that specifies no computer or device on the network should control when data can be transmitted

h.       computers or mobile devices on the network that rely on the server for its resources

i.         the time it takes a signal to travel from one location to another on a network

j.         network standard that defines how high-speed cellular transmissions use broadcast radio to transmit data for mobile communications

 

Problem Solving


 

  1. Problems Exchanging Files You are attempting to use Bluetooth to send files from your phone to your computer. When you try sending the files from your phone, it does not display your computer as a device to which it can send the file. What might be the problem?

Ensure that the computer is Bluetooth compatible, turned on, and is discoverable.

  1. Cannot Connect to Hot Spot You are sitting in a fast food restaurant that offers free Wi-Fi. When you search for available hot spots using your computer, the restaurantís hot spot does not appear in the computerís list of wireless networks. What are your next steps?

Restart your computer, ensure that WIFI is turned on, check to see if you are in range ask someone at the front desk if they are having issues with the WIFI as well.

  1. Paired Bluetooth Devices You and your brother each have your Bluetooth-enabled smartphones paired with your car so that you can talk through the carís microphone and listen through its speakers. When you and your brother are both in the car at the same time, his phone rings but it is not connected to the carís audio. Why might this be the case?

Most Bluetooth devices can only connect to one device at a time. This must mean that my phone is connected to the car.

  1. Slow Internet Connection Your Internet speed has suffered a sharp decline in performance recently. You have not added any computers or mobile devices to your house that might be accessing the network, and you are puzzled by the sudden performance problems. What might be the problem?

The router may need to be rebooted. The Ethernet cable is going bad. One of the devices are using a lot of network resources.

  1. Wireless Network Coverage You installed a new wireless network in your house. You notice that you sometimes have trouble connecting to the network from certain locations in the house, but other times you can connect from the same location without issue. What might be causing the problem?

The router may need a firmware update. You could also check to see if there is something that is blocking the line of sight.