5. Which color shows a normal distribution (curve) in the plot?

   1. blue (left)

   2. red (middle)

   3. green (right)

   4. None of the above

   5. All of the above

6. What is the median?

   1. The average of the values (i.e.: 1, 3, 20 = 24/3)

   2. An unusual or high value

   3. The value that occurs most frequently (1, 2, 2, 2, 4, 8 = 2)

   4. The middle value (i.e.: 1, 3, 5, 12, 22 = 5)

   5. The square root of variance

7. What is the mode?

   1. The average of the values (i.e.: 1, 3, 20 = 24/3)

   2. An unusual or high value

   3. The value that occurs most frequently (1, 2, 2, 2, 4, 8 = 2)

   4. The middle value (i.e.: 1, 3, 5, 12, 22 = 5)

   5. The square root of variance

8. What is an example of an attribute?

   1. car

   2. computer

   3. USB drive

   4. Blue hair

   5. student

9. What is an example of a data object?

   1. Student

   2. red

   3. 64GB

   4. gender (M/F)

   5. 32 KG

7. Networks and Telecommunications

1. What is the World Wide Web?

   1. technologies that provide access to information through telecommunications

   2. a collection of interconnected documents and other resources

   3. the application of scientific knowledge for practical purposes

   4. global computer network providing a variety of information and communication facilities

   5. exchange of information over significant distances by electronic means

2. What was the purpose of ARPANET?

   1. to develop a platform for the WWW

   2. to share research information

   3. an experiment to test sharing resources

   4. a university project to share MP3 files

   5. a super-secret government project to share classified data

3. What is NOT true of a network?

   1. A network is a way to get “stuff” between 2 or more “things”

   2. Networks usually do not have internal connections

   3. A network allows sharing information among computer

   4. The postal system is an example of a network

   5. Metros are an example of a network

4. How many devices are required for a network to be called a computer network?

   1. 1

   2. 2

   3. 3

   4. 4

   5. 5

5. What is the scale of a PAN?

   1. Vicinity (e.g., Bluetooth)

   2. Building (WiFi, Ethernet)

   3. City (DSL)

   4. Country (Large ISP)

   5. Global

6. What is the scale of a LAN?

   1. Vicinity (e.g., Bluetooth)

   2. Building (WiFi, Ethernet)

   3. City (DSL)

   4. Country (Large ISP)

   5. Global

7. What is the scale of a MAN?

   1. Vicinity (e.g., Bluetooth)

   2. Building (WiFi, Ethernet)

   3. City (DSL)

   4. Country (Large ISP)

   5. Global

8. What is the scale of a WAN?

   1. Vicinity (e.g., Bluetooth)

   2. Building (WiFi, Ethernet)

   3. City (DSL)

   4. Country (Large ISP)

   5. Global

9. What type of connection do these networks represent?

   1. Physical

   2. Virtual

   3. Intermittent

   4. Constant

   5. Logical

10. What type of connection does this network represent?

    1. Physical

    2. Virtual

    3. Intermittent

    4. Constant

    5. Logical

11. What is the most common type of network topology used today?

    1. Fish

    2. Star

    3. Bus

    4. Ring

    5. Tree

12. A laptop, smartphone, or server are examples of what network component?

    1. applications

    2. hosts

    3. routers

    4. links

    5. interfaces

13. A DSL modem and wireless access points are examples of what network component?

    1. applications

    2. hosts

    3. routers

    4. links

    5. interfaces

14. Wires, cables and radio signals are examples of what network component?

    1. applications

    2. hosts

    3. routers

    4. links

    5. interfaces

15. Network-application and network-network are examples of what on a network?

    1. applications

    2. hosts

    3. routers

    4. links

    5. interfaces

16. What is the function of the data layer?

    1. Transmit data by an electric voltage, radio frequencies, or light over a physical medium

    2. Sends data node-to-node

    3. Provides network addressing and routing (host-to-host)

    4. Delivers data from process-to-process

    5. Provides application services to users and programs

17. What is the function of the network layer?

    1. Transmit data by an electric voltage, radio frequencies, or light over a physical medium

    2. Sends data node-to-node

    3. Provides network addressing and routing (host-to-host)

    4. Delivers data from process-to-process

    5. Provides application services to users and programs

18. What is the function of the transport layer?

    1. Transmit data by an electric voltage, radio frequencies, or light over a physical medium

    2. Sends data node-to-node

    3. Provides network addressing and routing (host-to-host)

    4. Delivers data from process-to-process

    5. Provides application services to users and programs