Topology in networks is the structure or pattern in which each and every node in the network is connected. There are many topologies in networking like bus, tree, ring, star, mesh, and hybrid topology. There is no particular best topology and a suitable topology can be chosen based on the kind of application of the network .
Which network topology requires a central controller or hub?
A.
Star
B.
Mesh
C.
Ring
D.
Bus
Answer: Option A
Explanation:
In star topology, no computer is connected to another computer directly but all the computers are connected to a central hub. Every message sent from a source computer goes through the hub and the hub then forwards the message only to the intended destination computer.
In bus topology, there is a single cable to which all the network nodes are connected. So whenever a node tries to send a message or data to other nodes, this data passes through all other nodes in the network through the cable. It is really simple to install but it’s not secure enough to be used in most of the computer network applications.
Data communication system spanning states, countries, or the whole world is?
A.
LAN
B.
WAN
C.
MAN
D.
PAN
Answer: Option B
Explanation:
WAN is the abbreviation for Wide Area Network. This network extends over a large geographical area. WANs are used to connect cities, states or even countries. A wireless connection is required to build a WAN. The best example of WAN is the Internet.
Data communication system within a building or campus is?
A.
LAN
B.
WAN
C.
MAN
D.
PAN
Answer: Option A
Explanation:
LAN is an abbreviation for Local Area Network. This network interconnects computers in a small area such as schools, offices, residence etc. It is the most versatile kind of data communication system where most of the computer network concepts can be visibly used.