Infrared and Bluetooth

Question 1

A portable computer connected to a printer with infrared interface works fine inside your office. However, when you go outside it works sporadically. How can you fix this? (select two)

–Move that printer closer to the computer
–Install a Gamma Ray Spectrometer to shield the interface
–Block any direct and reflected sunlight from the pathway between the PC and the printer
–Set the environment setting to outdoor mode in the miles

Answer 1

Move that printer closer to the computer

Block any direct and reflected sunlight from the pathway between the PC and the printer

Question 2

What is the maximum transmission speed for Bluetooth devices?

1 Mbps
3 Mbps
54 Mbps
11 Mbps

Answer 2

3 Mbps

Question 3

You want to use a wireless keyboard and mouse with your laptop computer. Which method should you choose?

Bluetooth
USB
802.11g wireless
IEEE 1394
PS/2

Answer 3

Bluetooth

Question 4

Which of the following is not an example of wireless networking communications?

DSL
802.11n
Bluetooth
Infrared

Answer 4

DSL

Question 5

You need a type of wireless connection that can transfer data between your phone, PDA, and laptop. You are transferring sensitive information. Which would be the best choice?

Infrared
Bluetooth
Wireless Ethernet
Cellular Wan

Answer 5

Bluetooth

Question 6

Which of the following are characteristics of Bluetooth? (Select two)

Line of sight transmission
5.7 GHz radio wireless
Red spectrum lightwaves
Ad hoc connections
2.4 GHz radio wireless

Answer 6

Ad hoc connections

2.4 GHz radio wireless

Question 7

You want to use a wireless printer at home. The printer will be used by two computers into different rooms. Which interface could be used to do this?

USB
IEEE 1284
Bluetooth  
IEEE 1394
Wireless Ethernet 
Infrared (IrDA)

Answer 7

Bluetooth

Wireless Ethernet

Question 8

What is the maximum range of the Bluetooth 2.0 specification for class one devices

30 m
50 m
100 m
10 m
300 m

Answer 8

100 m