THE BITS AND BYTES OF COMPUTER
NETWORKING EXAM QUESTIONS WITH
CORRECT ANSWERS
TCP or Transmission Control Protocol - Answer-A protocol developed for the internet to
get data from one network device to another
IP or Internet Protocol - Answer-A set of rules governing the format of data sent over the
internet or other network.
Cat 5 - Answer-Type of cable that has the ability to transfer information from one
computer to another
Cat 5e - Answer-Enhanced cat 5 cable used for gigabit speeds and minimum for Voice
over IP
Cat 6e - Answer-This cable has shorter distance at higher speeds.
Fiber cable - Answer-Contain individual optical fibers that uses light to transmit data.
Which cable supports the longest distance to transmit data - Cat5, Fiber Optic, Cat5e,
Cat6e? - Answer-Fiber Optic
Hub - Answer-This is a physical layer device used to connect network components. All
the devices connected to a hub will end up talking to all other devices at the same time.
Switch - Answer-A Data Link Layer device that connects network segments. A switch
can inspect the contents of the Ethernet protocol data being sent around the network,
determine which system the data is intended for and then only send data to that one
system.
Collision Domain - Answer-This is a network segment where only one device can
communicate at a time,
Hubs/Switches - Answer-primary devices used to connect computers on a single local
area network (LAN)
Router - Answer-A Network layer device that routes packets of data between two or
more networks.
BGP or Border Gateway Protocol - Answer-Protocol where routers share data with each
other, allowing them to determine the most optimal path to forward traffic
,Modulation - Answer-This is a way of varying the voltage of an electric charge moving
across the Ethernet cable to represent 1's and 0's. Also known as line coding.
Twisted Pair Cabling - Answer-This is a cable consisting of two wires twisted around
each other.
Duplex Communication - Answer-The concept that information can flow in both
directions across the cable.
Simplex Communication - Answer-The concept that information can flow in one
direction across the cable.
Communication on a phone line is Duplex or Simplex Communication? - Answer-Duplex
Communication
A baby monitor transmits data in one direction is Duplex or Simplex Communication? -
Answer-Simplex Communication
Full Duplex - Answer-The concept that devices can both communicate with each other
at the exact same time.
Half Duplex - Answer-Only one device can be communicating at a time.
Vlan - Answer-It's a technique that lets you have multiple logical LANs operating on the
same physical equipment. An example would be video calls and phone calls on the
same LAN
RJ-45 or Registered Jack 45 - Answer-A type of connector on the end of a cable.
Link Light - Answer-Located on the network port. It will be lit when a cable is properly
connected to two devices that are both powered on.
Activity Light - Answer-Located on the network port. This light will flash when data is
actively transmitted across the cable.
Patch Panel - Answer-A device containing many network ports but it does no other
work.
Media Access Control or MAC - Answer-An address for communications on the physical
network segment.
MAC - Answer-Uses 48-bit number normally represented by six groupings of two
hexadecimal numbers.
Hexadecimal Numbers - Answer-This number system has 16 numerals 0 - 9 and uses
A, B, C, D, E, and F to represent the numbers 10, 11, 12, 13, 14, and 15.
, Octet - Answer-In computer networking, any number that can be represented by 8 bits.
Organizationally Unique Identifier or OIU - Answer-The first three octets in MAC
address- Indicate a network card's manufacturer and is assigned by IEE. Institute of
Electrical and Electronics Engineers.
Last three octets - Answer-Can be assigned in any way that the manufacturer would like
with the condition that they only assign each possible address once to keep all MAC
addresses globally unique.
Unicast - Answer-A message that goes from one single computer to another single
computer. It is communication between a single sender and a single receiver over a
network.
How do you know if the information sent is a Unicast? - Answer-The least significant bit
in the first octet of a destination address is set to zero
How do you know if the information sent is a Multicast? - Answer-The least significant
bit in the first octet of a destination address is set to one.
Broadcast - Answer-Information is sent to every single device on a LAN. The Ethernet
broadcast address is all F's.
data packet - Answer-An all-encompassing term that represents any single set of binary
data being sent across a network link.
Ethernet Frame - Answer-A highly structured collection of information presented in a
specific order
Preamble - Answer-The first part of an Ethernet frame. 8 bytes or 64 bits long and can
itself be split into two
SFD or Start Frame Delimiter - Answer-The last byte in the preamble. Signals to a
receiving device that the preamble is over and that the actual frame contents will now
follow.
This type of address is 48 bits or 6 bytes long. - Answer-MAC
MAC Adress - Answer-In the Ethernet frame the destination and source address is
listed after the SFD.
Ether type Field - Answer-This frame comes after MAC address and is 16 bits long. It is
used to indicate which protocol is encapsulated in the payload of the frame
NETWORKING EXAM QUESTIONS WITH
CORRECT ANSWERS
TCP or Transmission Control Protocol - Answer-A protocol developed for the internet to
get data from one network device to another
IP or Internet Protocol - Answer-A set of rules governing the format of data sent over the
internet or other network.
Cat 5 - Answer-Type of cable that has the ability to transfer information from one
computer to another
Cat 5e - Answer-Enhanced cat 5 cable used for gigabit speeds and minimum for Voice
over IP
Cat 6e - Answer-This cable has shorter distance at higher speeds.
Fiber cable - Answer-Contain individual optical fibers that uses light to transmit data.
Which cable supports the longest distance to transmit data - Cat5, Fiber Optic, Cat5e,
Cat6e? - Answer-Fiber Optic
Hub - Answer-This is a physical layer device used to connect network components. All
the devices connected to a hub will end up talking to all other devices at the same time.
Switch - Answer-A Data Link Layer device that connects network segments. A switch
can inspect the contents of the Ethernet protocol data being sent around the network,
determine which system the data is intended for and then only send data to that one
system.
Collision Domain - Answer-This is a network segment where only one device can
communicate at a time,
Hubs/Switches - Answer-primary devices used to connect computers on a single local
area network (LAN)
Router - Answer-A Network layer device that routes packets of data between two or
more networks.
BGP or Border Gateway Protocol - Answer-Protocol where routers share data with each
other, allowing them to determine the most optimal path to forward traffic
,Modulation - Answer-This is a way of varying the voltage of an electric charge moving
across the Ethernet cable to represent 1's and 0's. Also known as line coding.
Twisted Pair Cabling - Answer-This is a cable consisting of two wires twisted around
each other.
Duplex Communication - Answer-The concept that information can flow in both
directions across the cable.
Simplex Communication - Answer-The concept that information can flow in one
direction across the cable.
Communication on a phone line is Duplex or Simplex Communication? - Answer-Duplex
Communication
A baby monitor transmits data in one direction is Duplex or Simplex Communication? -
Answer-Simplex Communication
Full Duplex - Answer-The concept that devices can both communicate with each other
at the exact same time.
Half Duplex - Answer-Only one device can be communicating at a time.
Vlan - Answer-It's a technique that lets you have multiple logical LANs operating on the
same physical equipment. An example would be video calls and phone calls on the
same LAN
RJ-45 or Registered Jack 45 - Answer-A type of connector on the end of a cable.
Link Light - Answer-Located on the network port. It will be lit when a cable is properly
connected to two devices that are both powered on.
Activity Light - Answer-Located on the network port. This light will flash when data is
actively transmitted across the cable.
Patch Panel - Answer-A device containing many network ports but it does no other
work.
Media Access Control or MAC - Answer-An address for communications on the physical
network segment.
MAC - Answer-Uses 48-bit number normally represented by six groupings of two
hexadecimal numbers.
Hexadecimal Numbers - Answer-This number system has 16 numerals 0 - 9 and uses
A, B, C, D, E, and F to represent the numbers 10, 11, 12, 13, 14, and 15.
, Octet - Answer-In computer networking, any number that can be represented by 8 bits.
Organizationally Unique Identifier or OIU - Answer-The first three octets in MAC
address- Indicate a network card's manufacturer and is assigned by IEE. Institute of
Electrical and Electronics Engineers.
Last three octets - Answer-Can be assigned in any way that the manufacturer would like
with the condition that they only assign each possible address once to keep all MAC
addresses globally unique.
Unicast - Answer-A message that goes from one single computer to another single
computer. It is communication between a single sender and a single receiver over a
network.
How do you know if the information sent is a Unicast? - Answer-The least significant bit
in the first octet of a destination address is set to zero
How do you know if the information sent is a Multicast? - Answer-The least significant
bit in the first octet of a destination address is set to one.
Broadcast - Answer-Information is sent to every single device on a LAN. The Ethernet
broadcast address is all F's.
data packet - Answer-An all-encompassing term that represents any single set of binary
data being sent across a network link.
Ethernet Frame - Answer-A highly structured collection of information presented in a
specific order
Preamble - Answer-The first part of an Ethernet frame. 8 bytes or 64 bits long and can
itself be split into two
SFD or Start Frame Delimiter - Answer-The last byte in the preamble. Signals to a
receiving device that the preamble is over and that the actual frame contents will now
follow.
This type of address is 48 bits or 6 bytes long. - Answer-MAC
MAC Adress - Answer-In the Ethernet frame the destination and source address is
listed after the SFD.
Ether type Field - Answer-This frame comes after MAC address and is 16 bits long. It is
used to indicate which protocol is encapsulated in the payload of the frame
