1.  

A tech company is creating a network for its office, and it has decided that its top priority is to have fast speeds and high signal strength. Which of the following communication channels should they choose?

  (1 point)

twisted pair

coaxial cable

fiber optic

wireless

2.  

NIC stands for

  (1 point)

network interface card.

network Internet card.

national Internet card.

national interface card.

3.  

Which of the following situations can directly lead to failure of a network based on a bus topology?

  (1 point)

The main wire that acts as the backbone is old, and the protective cover is fraying.

The system acting as the hub has soda spilled on it.

There are a couple of computers in the network that have trouble maintaining a signal.

One of the computers on the system has a lot of malware installed on it.

4.  

Alberto is setting up a network for his bank. Due to the fact that people would be able to profit by stealing its data, the bank has decided that the top priority is to prevent intrusions from outside sources. Alberto’s focus is on which of the following network criteria?

  (1 point)

performance

reliability

recovery

security

5.  

Which of the following situations can directly lead to failure of a network based on a star topology?

  (1 point)

The main wire that acts as the backbone is old, and the protective cover is fraying.

The system acting as the hub has soda spilled on it.

There are a couple of computers in the network that have trouble maintaining a signal.

One of the computers on the system has a lot of malware installed on it.

6.  

________ are omnidirectional and can easily penetrate buildings.

  (1 point)

Infrared transmissions

Radio transmissions

Satellite transmissions

Microwave transmissions

7.  

You are setting up a network in your home for four laptop computers and two tablets. Your goal is that all of the computers should be usable anywhere in the house. Which of the following communication channels should you choose?

  (1 point)

twisted pair

coaxial cable

fiber optic

wireless

8.  

Which of the following is not an advantage of using asynchronous data transmission?

  (1 point)

simplicity

inexpensive software

inexpensive hardware

fast setup

9.  

A ________ is used to help maintain network security by identifying and rejecting data from unsafe sources.

  (1 point)

repeater

switch

router

firewall