CSP Semester Exam

1.       How many total numbers can be represented with an 8-bit binary (base-2) system?

• 127

• 128

• 255

• 256

Which of the following is true of lossy and lossless compression algorithms?

• Lossy compression algorithms are used when perfect reconstruction of the original data is important

• Lossy compression algorithms are typically better than lossless compression algorithms at reducing the number of bits needed to represent a piece of data

• Lossless compression algorithms are only used to compress text data

• Lossless compression algorithms only allow for an approximate reconstruction of the original data

Which of the following is true of how the Internet has responded to the increasing number of devices now using the network?

• The Internet protocols are changed every year to adapt to the new devices that have been connected to the network

• While the number of devices connected to the Internet has grown, the network itself has not grown

• The protocols of the Internet were designed to scale as new devices are added

• The protocols of the Internet are no longer necessary thanks to the large number of devices now connected to the network

Which of the following is true of how packets are sent through the Internet?

• Packet metadata is only included on important packets to indicate they should get access to faster paths through the network

• Packet metadata is used to route and reassemble information travelling through the Internet

• Information sent through the internet is only encapsulated in packets if the message is too large to be sent as a datastream

• Information sent through the internet is split into two packets, one which contains the message and another which contains the metadata

Emilee is watching an online video. The video is being sent to her laptop by a server over the Internet which splits the video into packets and sends them in the order they appear in the video. Which of the following is true about how the packets will arrive at her computer?

• The packets will always be received in the order that they were sentut of order

• Either every packet will reach her computer or none of them will.

• Packets that arrive out of order will be sent back to the server.

• The packets may arrive out of order

Which of the following best describes the purpose of an IP address?

• IP addresses provide a unique number for identifying devices that send and receive information on the Internet

• IP addresses assist in the reconstruction of a message that has been divided into many packets

• IP addresses indicate the location where an internet-connected computing device was manufactured

• IP addresses indicate how many times an individual packet has been requested by a router

Which of the following Internet protocols is MOST important in reassembling packets and requesting missing packets to form complete messages?

• Transmission Control Protocol (TCP)

• Internet Protocol (IP)

• User Datagram Protocol (UDP)

• HyperText Transfer Protocol (HTTP)

The following program is run. Then the user clicks the “bottomButton” ONCE and then clicks the “topButton” ONCE. What will be displayed in the console?

• cow pig chicken

• cow chicken pig

• pig cow chicken

• chicken pig cow

The following program is run. Then the user clicks the “bottomButton” TWO TIMES. What will be displayed in the console?

• apple banana cherry cherry dragonfruit

• banana dragonfruit cherry cherry

• banana dragofruit apple apple

• banana cherry cherry dragonfruit

Which line of code in this program is MOST likely to result in an error?

• Line 1

• Line 2

• Line 3

• Line 4