Computer Networking Midterm Review
Exam Questions with Latest Update
Internet - Answer-A global network connecting millions of computers, making it possible
to exchange information.
Hosts or End Systems - Answer-devices using the internet
Packets - Answer-Small chunks of information that have been carefully formed from
larger chunks of information.
packet switches - Answer-takes a packet arriving on one of its incoming communication
links and forwards that packet on one of its outgoing communication links (router is a
packet switch)
transmission rate - Answer-The speed of a link measured in bits/second. (R)
Route or Path - Answer-The sequence of communication links and packet switches
traversed by a packet from the sending end system to the receiving end system
ISP (Internet Service Provider) - Answer-A company that provides customers access to
the Internet.
Protocols - Answer-technical rules governing data communication, control the sending
and receiving of information within the internet
TCP (Transmission Control Protocol) - Answer-provides reliable, ordered, and error-
checked delivery of a stream of packets on the internet. TCP is tightly linked with IP and
usually seen as TCP/IP in writing.
Internet Protocol (IP) - Answer-A set of rules responsible for disassembling, delivering,
and reassembling packets over the Internet.
TCP/IP - Answer-The dominant set of protocols for the transfer of data over the Internet.
Internet Standards - Answer-standards for the internet developed by IETF
IETF: Internet Engineering Task Force
RFC - Answer-(Request for Comments) Documents are how standards and protocols
are defined and published for all to see on the IETF website.
DSL - Answer-Digital Subscriber Line. A method of connecting to the Internet via a
phone line. A DSL connection uses copper telephone lines but is able to relay data at
much higher speeds than modems and does not interfere with telephone use.
, Cable Internet - Answer-A broadband service that transmits data over coaxial cables.
Fiber to the Home (FTTH) - Answer-Broadband service provided via light-transmitting
fiber-optic cables.
guided media - Answer-transmission flows along physical medium
unguided media - Answer-waves propagate in the atmosphere and in outer space, such
as in a wireless LAN or a digital satellite channel
Shared Media - Answer-a number of end systems can be connected directly to the
cable (coaxial cable)
fiber-optic cable - Answer-A connection that uses light to transmit information.
terrestrial radio - Answer-The industry based on audio transmission from land-based
towers, as opposed to transmission via satellite
satellite radio - Answer-method to deliver radio from an orbiting satellite directly to end
users
store-and-forward switching - Answer-a switching method that receives the entire frame
before forwarding
Queuing Delay - Answer-packets experience this as it waits to be transmitted onto the
link, depends on the network congestion
packet loss - Answer-refers to data that never reaches its destination or gets discarded
because it arrives too late, packet buffer is full of other packets waiting for transmission
output buffer - Answer-stores packets that the router is about to send into that link
IP address - Answer-A number assigned to any item that is connected to the Internet.
forwarding table - Answer-Table that maps destination address to a routers outbound
links
Routing Protocols - Answer-used to facilitate the exchange of routing information
between routers
Circuit Switching - Answer-a dedicated connection is formed between two points and
the connection remains active for the duration of the transmission
used by telephone networks
Exam Questions with Latest Update
Internet - Answer-A global network connecting millions of computers, making it possible
to exchange information.
Hosts or End Systems - Answer-devices using the internet
Packets - Answer-Small chunks of information that have been carefully formed from
larger chunks of information.
packet switches - Answer-takes a packet arriving on one of its incoming communication
links and forwards that packet on one of its outgoing communication links (router is a
packet switch)
transmission rate - Answer-The speed of a link measured in bits/second. (R)
Route or Path - Answer-The sequence of communication links and packet switches
traversed by a packet from the sending end system to the receiving end system
ISP (Internet Service Provider) - Answer-A company that provides customers access to
the Internet.
Protocols - Answer-technical rules governing data communication, control the sending
and receiving of information within the internet
TCP (Transmission Control Protocol) - Answer-provides reliable, ordered, and error-
checked delivery of a stream of packets on the internet. TCP is tightly linked with IP and
usually seen as TCP/IP in writing.
Internet Protocol (IP) - Answer-A set of rules responsible for disassembling, delivering,
and reassembling packets over the Internet.
TCP/IP - Answer-The dominant set of protocols for the transfer of data over the Internet.
Internet Standards - Answer-standards for the internet developed by IETF
IETF: Internet Engineering Task Force
RFC - Answer-(Request for Comments) Documents are how standards and protocols
are defined and published for all to see on the IETF website.
DSL - Answer-Digital Subscriber Line. A method of connecting to the Internet via a
phone line. A DSL connection uses copper telephone lines but is able to relay data at
much higher speeds than modems and does not interfere with telephone use.
, Cable Internet - Answer-A broadband service that transmits data over coaxial cables.
Fiber to the Home (FTTH) - Answer-Broadband service provided via light-transmitting
fiber-optic cables.
guided media - Answer-transmission flows along physical medium
unguided media - Answer-waves propagate in the atmosphere and in outer space, such
as in a wireless LAN or a digital satellite channel
Shared Media - Answer-a number of end systems can be connected directly to the
cable (coaxial cable)
fiber-optic cable - Answer-A connection that uses light to transmit information.
terrestrial radio - Answer-The industry based on audio transmission from land-based
towers, as opposed to transmission via satellite
satellite radio - Answer-method to deliver radio from an orbiting satellite directly to end
users
store-and-forward switching - Answer-a switching method that receives the entire frame
before forwarding
Queuing Delay - Answer-packets experience this as it waits to be transmitted onto the
link, depends on the network congestion
packet loss - Answer-refers to data that never reaches its destination or gets discarded
because it arrives too late, packet buffer is full of other packets waiting for transmission
output buffer - Answer-stores packets that the router is about to send into that link
IP address - Answer-A number assigned to any item that is connected to the Internet.
forwarding table - Answer-Table that maps destination address to a routers outbound
links
Routing Protocols - Answer-used to facilitate the exchange of routing information
between routers
Circuit Switching - Answer-a dedicated connection is formed between two points and
the connection remains active for the duration of the transmission
used by telephone networks
