AP Computer Science Principles Unit 2
UPDATED Exam Questions and CORRECT
Answers
What does TCP/IP stand for? - CORRECT ANSWER - Transmission Control
Protocol/Internet Protocol
What do routers do? - CORRECT ANSWER - devices that act as traffic control for the
Internet; provide various pathways, or routes, to get information from one computer to another
What do routers allow for? - CORRECT ANSWER - redundancy, or the fact that if one
pathway fails, the routers can reroute the information to get it where it needs to go
What is the Internet? - CORRECT ANSWER - a global network of computers and servers
allowing communication between them
What is bandwidth? - CORRECT ANSWER - the transmission capacity of a connection
measured in bit rate
What is bit rate? - CORRECT ANSWER - number of bits that can be processed in a given
amount of time
What is latency? - CORRECT ANSWER - time it takes for a bit to travel the distance
between computers
What would happen without transfer protocols? - CORRECT ANSWER - each computer
would have to decide for itself what the binary string actually meant
What do effective transfer protocols have to agree on? - CORRECT ANSWER - order of
information, timing of information, common language, indicators (01000001 would be the
number 65 or the letter A)
, What are the two main forms of IP adresses? - CORRECT ANSWER - IPv4
IPv6
What format are IPv4 addresses in? What is the reason for this? - CORRECT ANSWER -
0-255.0-255.0-255.0-255
so that each part is represented by one byte, or 8 bits
32 bits used in total
What format are IPv6 address in? - CORRECT ANSWER - 0000-FFFF:0000-FFFF:0000-
FFFF:0000-FFFF:0000-FFFF:0000-FFFF:0000-FFFF:0000-FFFF
represented by 8 groups of 4 hexadecimal digits, each group representing 16 bits
128 bits used in total
For an IPv4 address, what do the first two sets refer to?
Ex: 28.10.204.16 - CORRECT ANSWER - the network
(28.10)
For an IPv4 address, what do the last two sets refer to?
Ex: 28.10.204.16 - CORRECT ANSWER - the specific node in the network the computer
is attached to
(204.16)
For an IPv4 address, what sets refer to what if the network uses subnets, or subnetworks? (often
used at universities, companies, and governments) - CORRECT ANSWER - the first two
sets would be the university network, the next set would be the individual school, and the last set
would be the node
What are static IP addresses? - CORRECT ANSWER - permanent IP addresses, mostly for
major servers that will never move, like google.com or espn.com
UPDATED Exam Questions and CORRECT
Answers
What does TCP/IP stand for? - CORRECT ANSWER - Transmission Control
Protocol/Internet Protocol
What do routers do? - CORRECT ANSWER - devices that act as traffic control for the
Internet; provide various pathways, or routes, to get information from one computer to another
What do routers allow for? - CORRECT ANSWER - redundancy, or the fact that if one
pathway fails, the routers can reroute the information to get it where it needs to go
What is the Internet? - CORRECT ANSWER - a global network of computers and servers
allowing communication between them
What is bandwidth? - CORRECT ANSWER - the transmission capacity of a connection
measured in bit rate
What is bit rate? - CORRECT ANSWER - number of bits that can be processed in a given
amount of time
What is latency? - CORRECT ANSWER - time it takes for a bit to travel the distance
between computers
What would happen without transfer protocols? - CORRECT ANSWER - each computer
would have to decide for itself what the binary string actually meant
What do effective transfer protocols have to agree on? - CORRECT ANSWER - order of
information, timing of information, common language, indicators (01000001 would be the
number 65 or the letter A)
, What are the two main forms of IP adresses? - CORRECT ANSWER - IPv4
IPv6
What format are IPv4 addresses in? What is the reason for this? - CORRECT ANSWER -
0-255.0-255.0-255.0-255
so that each part is represented by one byte, or 8 bits
32 bits used in total
What format are IPv6 address in? - CORRECT ANSWER - 0000-FFFF:0000-FFFF:0000-
FFFF:0000-FFFF:0000-FFFF:0000-FFFF:0000-FFFF:0000-FFFF
represented by 8 groups of 4 hexadecimal digits, each group representing 16 bits
128 bits used in total
For an IPv4 address, what do the first two sets refer to?
Ex: 28.10.204.16 - CORRECT ANSWER - the network
(28.10)
For an IPv4 address, what do the last two sets refer to?
Ex: 28.10.204.16 - CORRECT ANSWER - the specific node in the network the computer
is attached to
(204.16)
For an IPv4 address, what sets refer to what if the network uses subnets, or subnetworks? (often
used at universities, companies, and governments) - CORRECT ANSWER - the first two
sets would be the university network, the next set would be the individual school, and the last set
would be the node
What are static IP addresses? - CORRECT ANSWER - permanent IP addresses, mostly for
major servers that will never move, like google.com or espn.com
