1.4.3 Communications in a Connected World Quiz Answers. Networking Basics Module 1 quiz exam answers
1. What is the internet?
- the type of physical media used by computers to access the World Wide Web
- a network of networks
- an application used to access the World Wide Web
- a small isolated internal network of a company
Explanation: The internet is essentially a network of networks. Each user connects to the internet by using a physical cable or through wireless media. Underneath this network of networks lies a very real backbone of connections that bring the world to personal computing devices.
2. What is an example of a binary value from everyday life?
- room temperature
- a simple light switch
- speed of a traveling car
- brightness of a light bulb
Explanation: A binary digit (or bit) has two possible values, 0 or 1. The on and off state of a simple switch is an example of the two states represented by a bit.
3. Which category of network components includes wires and cables used in a wired network?
- media
- devices
- peripherals
- hosts
Explanation: Network media describes the cables and wires used in wired networks and the radio frequency waves used in wireless networks.
4. What type of device is able to create physical movement?
- actuator
- sensor
- RFID tag
- console
Explanation: Actuators are a type of device that are used to produce physical movement.
5. What are three options for signal transmission on a network? (Choose three.)
- radio waves
- vibration pulses
- sound waves
- electrical pulses
- light pulses
Explanation: There are three common methods of signal transmission used in networks:
- Electrical signals – Transmission is achieved by representing data as electrical pulses on copper wire.
- Optical signals – Transmission is achieved by converting the electrical signals into light pulses.
- Wireless signals – Transmission is achieved by using infrared, microwave, or radio waves through the air.
6. Who owns the internet?
- Bill Gates
- Cisco
- the government
- no one person or group
Explanation: The internet is not owned by any one individual, group of individuals, or government. The internet is an open global collection of interconnected networks.
7. Which type of connected device is placed on objects to track and monitor them?
- RFID tags
- sensors
- actuators
- consoles
Explanation: Radio-frequency identification (RFID) tags use electromagnetic fields to identify and track objects.
8. A byte consists of how many bits?
- 2
- 4
- 8
- 16
Explanation: One byte is equal to 8 bits.
9. Which two numbers are possible values of a bit? (Choose two.)
- 0
- 1
- 2
- 8
- 16
Explanation: A bit has only two possible values, 0 and 1.
10. What measurement is used to indicate thousands of bits per second?
- Kbps
- Mbps
- Tbps
- Gbps
Explanation: Command bandwidth measurements are as follows:
- Thousands of bits per second (Kbps) or Kilobits per second
- Millions of bits per second (Mbps) or Megabits per second
- Billions of bits per second (Gbps) or Gigabits per second
- Trillions of bits per second (Tbps) or Terabits per second
11. What type of network must a home user access in order to do online shopping?
- a SOHO network
- the internet
- a local area network
Explanation: Home users will go online shopping over the internet because online vendors are accessed through the internet. A SOHO network allows computers in a home office or a remote office to connect to a corporate network, or access centralized, shared resources.