Chapter 29 Crash Course AP CSP
ACK - ✅✅ -(ACKnowledgment code) The communications code sent from a
receiving station to a transmitting station to indicate that it is ready to accept
data. It is also used to acknowledge the error-free receipt of transmitted data.
checksum - ✅✅-a data transmission control that uses a hash of a file to verify
accuracy
data link layer - ✅✅-The second layer in the OSI model. This layer bridges the
networking media with the Network layer. Its primary function is to divide the data
it receives from the Network layer into frames that can then be transmitted by the
Physical layer.
DNS (Domain Name System) - ✅✅ -The Internet's system for converting
alphabetic names into numeric IP addresses.
IP Packet - ✅✅ -The IP portion of a TCP/IP frame that acts as an envelope for
data, holding information necessary for routers to transfer data between subnets.
Low-level protocol - ✅✅ -protocols are sets of established rules that dictate how
to format, transmit and receive data so computer network devices -- from servers
and routers to endpoints -- can communicate regardless of the differences in their
underlying infrastructures, designs or standards.
packet header - ✅✅ -A group of fields in a network packet that describes its
content, all required destination addresses to reach its target, and all source
information necessary to allow a response to come back.
packet payload - ✅✅ -The main chunk of the packet. Contains the data to be
transferred across. Sometimes called the 'body'
✅✅-Cables across the world that allow internet connection.
physical layers -
Second Level Domain - ✅✅-is a specific part of a website, page domain name
or URL address that complements a top-level domain. One of the easiest ways to
define a second-level domain is that it consists of that portion of the domain
ACK - ✅✅ -(ACKnowledgment code) The communications code sent from a
receiving station to a transmitting station to indicate that it is ready to accept
data. It is also used to acknowledge the error-free receipt of transmitted data.
checksum - ✅✅-a data transmission control that uses a hash of a file to verify
accuracy
data link layer - ✅✅-The second layer in the OSI model. This layer bridges the
networking media with the Network layer. Its primary function is to divide the data
it receives from the Network layer into frames that can then be transmitted by the
Physical layer.
DNS (Domain Name System) - ✅✅ -The Internet's system for converting
alphabetic names into numeric IP addresses.
IP Packet - ✅✅ -The IP portion of a TCP/IP frame that acts as an envelope for
data, holding information necessary for routers to transfer data between subnets.
Low-level protocol - ✅✅ -protocols are sets of established rules that dictate how
to format, transmit and receive data so computer network devices -- from servers
and routers to endpoints -- can communicate regardless of the differences in their
underlying infrastructures, designs or standards.
packet header - ✅✅ -A group of fields in a network packet that describes its
content, all required destination addresses to reach its target, and all source
information necessary to allow a response to come back.
packet payload - ✅✅ -The main chunk of the packet. Contains the data to be
transferred across. Sometimes called the 'body'
✅✅-Cables across the world that allow internet connection.
physical layers -
Second Level Domain - ✅✅-is a specific part of a website, page domain name
or URL address that complements a top-level domain. One of the easiest ways to
define a second-level domain is that it consists of that portion of the domain
