IT 105 FINAL REVIEW QUESTIONS & ANSWERS
Explain the North Bridge and South Bridge of a computer. - Answer -The north bridge
(also known as the memory bus) of a computer contacts the memory subsystem and
processor.
The south bridge (also known as the I/O bus) of a compute connects I/O to the CPU
and memory. IT also connects all peripheral cards and connectors.
What are the five basic interface components of a computer system? - Answer -1.
CPU/CPUs
2. Memory,
3. I/O peripheral devices or I/O controllers
4. modules or channel systems,
5. buses.
Intranet: - Answer -An organized network where user interfaces and applications are
primarily based on Web services. Its use is restricted to authorized users within the
organization.
Backbone Network: - Answer -Ties together LANs that provides access to external
networks like the Internet.
SCSI: - Answer -Stands for Small Computer System Interface and is a common
interface bus. It is the standard protocal.
HTTP: - Answer -Stands for Hypertext Transfer Protocol and is the standard protocol
used for website communication.
Bus: - Answer -A bundle of wires that carry signals and power between different
components.
Network Topology: - Answer -The fundamental configuration, or layout, of a network. It
is layout for a network.
Physical Topology: - Answer -The actual layout of the network wiring.
Logical Network Topology: - Answer -The operational relationship between the various
network components.
Ring Topology: - Answer -A topology where there is a point-to-point connection from
each node to the next.
Bus Topology: - Answer -A topology where each node is tapped into the bus along the
bus.
, Star Topology: - Answer -A topology where all nodes are connected point-to-point to a
central device.
Mesh Topology: - Answer -A topology where a direct point-to-point channel connects
every pair of nodes.
PCI Express Bus: - Answer -A predominant backplane used in most of the current
personal computers. It connects the CPU chip or I/O chipset to various peripheral
controllers. Each bus consists of 2 simplex line pairs that carry data, addresses, and
control signals simultaneously. It is not parallel.
Suppose a higher layer application wants to send a file 12MB in size across an Ethernet
LAN. How many Ethernet frames are needed? Assume the largest Ethernet payload is
1500 bytes - Answer -Work shown below:
MB to byte conversion: 12 * 2^20 = 12,582,912 bytes
Getting the Ethernet frames: 12,582,912/1500 = 8,389 Frames
8,389 Frames
Router: - Answer -A device that wirelessly forwards data packets to a computer
network.
Switches: - Answer -A device for breaking and connecting an electrical currents
Repeaters: - Answer -A device used to recreate signals at intervals. Use: transmit
signals over long distances
Amplifier: - Answer -A device used to restore the original strength of the signal.
Modem: - Answer -A device used to convert Ethernet signals from a computer or router
to analog signals for transmission over the phone line or cable system and vice versa.
Motherboard: - Answer -A circuit board with a CPU, memory, and other major
components are mounted to wiring on a printed circuit board.
Packets: - Answer -Long messages that are broken down to become small units in
order to be sent to the receiver.
Simplex: - Answer -Messages are carried only in one direction
Half-duplex: - Answer -Messages are carried in both directions but only one direction at
a time
Full duplex: - Answer -Messages are simultaneously carried in both directions
Explain the North Bridge and South Bridge of a computer. - Answer -The north bridge
(also known as the memory bus) of a computer contacts the memory subsystem and
processor.
The south bridge (also known as the I/O bus) of a compute connects I/O to the CPU
and memory. IT also connects all peripheral cards and connectors.
What are the five basic interface components of a computer system? - Answer -1.
CPU/CPUs
2. Memory,
3. I/O peripheral devices or I/O controllers
4. modules or channel systems,
5. buses.
Intranet: - Answer -An organized network where user interfaces and applications are
primarily based on Web services. Its use is restricted to authorized users within the
organization.
Backbone Network: - Answer -Ties together LANs that provides access to external
networks like the Internet.
SCSI: - Answer -Stands for Small Computer System Interface and is a common
interface bus. It is the standard protocal.
HTTP: - Answer -Stands for Hypertext Transfer Protocol and is the standard protocol
used for website communication.
Bus: - Answer -A bundle of wires that carry signals and power between different
components.
Network Topology: - Answer -The fundamental configuration, or layout, of a network. It
is layout for a network.
Physical Topology: - Answer -The actual layout of the network wiring.
Logical Network Topology: - Answer -The operational relationship between the various
network components.
Ring Topology: - Answer -A topology where there is a point-to-point connection from
each node to the next.
Bus Topology: - Answer -A topology where each node is tapped into the bus along the
bus.
, Star Topology: - Answer -A topology where all nodes are connected point-to-point to a
central device.
Mesh Topology: - Answer -A topology where a direct point-to-point channel connects
every pair of nodes.
PCI Express Bus: - Answer -A predominant backplane used in most of the current
personal computers. It connects the CPU chip or I/O chipset to various peripheral
controllers. Each bus consists of 2 simplex line pairs that carry data, addresses, and
control signals simultaneously. It is not parallel.
Suppose a higher layer application wants to send a file 12MB in size across an Ethernet
LAN. How many Ethernet frames are needed? Assume the largest Ethernet payload is
1500 bytes - Answer -Work shown below:
MB to byte conversion: 12 * 2^20 = 12,582,912 bytes
Getting the Ethernet frames: 12,582,912/1500 = 8,389 Frames
8,389 Frames
Router: - Answer -A device that wirelessly forwards data packets to a computer
network.
Switches: - Answer -A device for breaking and connecting an electrical currents
Repeaters: - Answer -A device used to recreate signals at intervals. Use: transmit
signals over long distances
Amplifier: - Answer -A device used to restore the original strength of the signal.
Modem: - Answer -A device used to convert Ethernet signals from a computer or router
to analog signals for transmission over the phone line or cable system and vice versa.
Motherboard: - Answer -A circuit board with a CPU, memory, and other major
components are mounted to wiring on a printed circuit board.
Packets: - Answer -Long messages that are broken down to become small units in
order to be sent to the receiver.
Simplex: - Answer -Messages are carried only in one direction
Half-duplex: - Answer -Messages are carried in both directions but only one direction at
a time
Full duplex: - Answer -Messages are simultaneously carried in both directions
