computing networks questions with answers
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A WAN uses third party cabling / leased line (1) to
transfer data between
State two differences geographically remote (1) sites. A LAN uses cabling
between a WAN and a owned by the company (1)
LAN. using the network. LANs are typically spread over a
small area such as building or
home (1).
state whether the true
statements below are true false
or false. false
The World Wide Web uses true
the Internet to transfer
data.
The Internet is an example
of a WAN.
Every networked device in
the world has a unique IP
address.
A LAN is usually located
on a single site.
DNS servers use a database of website addresses and
Explain how a DNS server their corresponding IP addresses; a website address
is used to access this that is entered is looked up in a DNS database to find
website given the address the matching IP address; if it can't find the address, it
the user has entered. searches on other DNS servers; a chain of DNS
servers update each other of changes.
, Give two advantages of A website address is easier to remember than an IP
using a DNS server to address; a connection to one DNS server means that
convert website you can access all addresses on all DNS servers; an
addresses. upgrade from IPv4 to IPv6 is managed centrally.
The website data is broken down into small
packets/chunks of data (1) each packet is numbered
(1) given the sender's and recipient's IP address (1) and
Describe how packets are
sent separately (1). Packets can take different routes
used to send data across
through the Internet (1) based on
the Internet.
the most efficient route (1). Packets are reassembled
at the destination (1) and checked for errors (1) lost or
corrupted packets are resent (1).
Each layer is self-contained (1) so can be changed
without affecting other layers (1) Discrete layers help
Explain the benefits of with interoperability (1) between hardware
using layers. manufacturers and computer systems (1)
Developers can concentrate on one network area (1)
without worrying about how the others work (1).
Mesh networks are self-healing/have no single point
of failure / more resilient due to redundancy (1) data
can be transmitted from different devices
State one advantage and
simultaneously (1)
one disadvantage of a
mesh network over a star
Mesh networks can be expensive to install (1) due to
network.
redundant connections (1) network maintenance and
administration is more complicated than with a star
network. (1)
Define the term 'protocol'. a set of rules to allow 2 devices to communicate.
Name two types of Copper cable (1) twisted pair (1) Cat 5/Cat 6 cable (1)
physical transmission fibre optic (1) coaxial (1)
media used for network
cabling.
Define the meaning of The encoding of data so that it can no longer be
'encryption'? understood.
Save Groups
A WAN uses third party cabling / leased line (1) to
transfer data between
State two differences geographically remote (1) sites. A LAN uses cabling
between a WAN and a owned by the company (1)
LAN. using the network. LANs are typically spread over a
small area such as building or
home (1).
state whether the true
statements below are true false
or false. false
The World Wide Web uses true
the Internet to transfer
data.
The Internet is an example
of a WAN.
Every networked device in
the world has a unique IP
address.
A LAN is usually located
on a single site.
DNS servers use a database of website addresses and
Explain how a DNS server their corresponding IP addresses; a website address
is used to access this that is entered is looked up in a DNS database to find
website given the address the matching IP address; if it can't find the address, it
the user has entered. searches on other DNS servers; a chain of DNS
servers update each other of changes.
, Give two advantages of A website address is easier to remember than an IP
using a DNS server to address; a connection to one DNS server means that
convert website you can access all addresses on all DNS servers; an
addresses. upgrade from IPv4 to IPv6 is managed centrally.
The website data is broken down into small
packets/chunks of data (1) each packet is numbered
(1) given the sender's and recipient's IP address (1) and
Describe how packets are
sent separately (1). Packets can take different routes
used to send data across
through the Internet (1) based on
the Internet.
the most efficient route (1). Packets are reassembled
at the destination (1) and checked for errors (1) lost or
corrupted packets are resent (1).
Each layer is self-contained (1) so can be changed
without affecting other layers (1) Discrete layers help
Explain the benefits of with interoperability (1) between hardware
using layers. manufacturers and computer systems (1)
Developers can concentrate on one network area (1)
without worrying about how the others work (1).
Mesh networks are self-healing/have no single point
of failure / more resilient due to redundancy (1) data
can be transmitted from different devices
State one advantage and
simultaneously (1)
one disadvantage of a
mesh network over a star
Mesh networks can be expensive to install (1) due to
network.
redundant connections (1) network maintenance and
administration is more complicated than with a star
network. (1)
Define the term 'protocol'. a set of rules to allow 2 devices to communicate.
Name two types of Copper cable (1) twisted pair (1) Cat 5/Cat 6 cable (1)
physical transmission fibre optic (1) coaxial (1)
media used for network
cabling.
Define the meaning of The encoding of data so that it can no longer be
'encryption'? understood.
