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What are LAN and WAN JAIIB Principles and Practices of banking Module C

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Firstly Let us know about basics of Networking,
What are LAN and WAN JAIIB

What is Network?

  Interconnecting 2 or more systems in a manner to share its resources (data packets, softwares, memory, common medium).

There are many ways to do networking, Some of those are,

LAN,  WAN, MAN,  GAN. in this Unit we will talk about LAN and WAN.

>>>> LAN (Local Area Network)[ ex: your Building or local area] : if 2 or more computers (Nodes) are interconnected within a range of 100 meters it is called as LAN.  In this LAN there is One Central Node (Server) providing and controlling all the services of the network.

Nodes Required      :    Minimum -2                    Maximum - 1000
RangeCan Spread   :    Minimum (any)               Maximum 100 meters (can also be 1 km)


>>>> WAN (Wide Area Network)[ ex: your City or Country area]is known as Large scale Computer Network.


It is a huge size network sizeable geographic area.
In banking terminology it is useful in interconnecting branches. Generally these types of networking is used in telecommunications. So banks used these type of network with help of telecommunications known as Leased lines Network. it can be also through ,Satellite links / microwave links.

>> Generally in WAN Data transmission speed is slower than LAN.


Topology 

   Now we know what is Network, Then what is topology?. Lets see,

>> The way you interconnect computers (creating network) is known as "Topology".
>>  There are Nodes (computers), Cables to connect Nodes to form a Network.
>>  There are 3 types of Topolgies. (according to our syllabus),       They are,

* Bus Topology (known as Basic topology)
* Ring Topology    
* Star Topology


In bus topology there is one continuous cable and all nodes are connected to throug that cable.
it is easy to setup.


one central node is there in star topology. known as master server, all other nodes (clients) are connected to master separately by separate cable.


all nodes are interconnected in loop or ring format. data transmission is possible in one direction only. the disadvantage is, if one node fails entire LAN will fails.


Protocols

 "The Protocols are the Rules for communication between similar modules of processes, usually in different nodes."

Let us  take an example that if you ask a security guard of army or navy or ministry of affairs about their future activities, they will say that their Protocols don't agree. that means they don't have permission (security) to say out. Like that every node in a network should follow protocols to communicate each other.

>>>> UPS (Uninterrupted Power Supply)

  UPS provides continuous AC power supply to computer systems to protect them form power breakouts.  There are 2 types of UPS. They are

*  Online UPS (Banks use these type of UPS system in Branches/Offices)

     In this type of UPS , The main 230V input current is converted into 48V DC and from the battery charger cum rectifier is then converted to a 230V AC, even in the case of main supply available and the power is supplied to the computer systems. If power failure occures, the  48V DC is supplied by the batteries.

*  Offline UPS
   
   In this battery charger and inverter are 2 seperate parts.


>>>>>>>Core Banking

  In this there is centralised Host, to which all branches are connected. All Alternate Channels are incorporated under one umbrella. All transactions are effected in real time in server, So all channels are effected at real time. Real time settlements, Electronic funds transfers are possible.


PDC (Primary Data Centre)

 Known as central host for online transactions,
 works round the clock 24 X 7 X 365.

DRS (Disaster Recovery Site)

  To avoid Distruption in daily Bussiness activities,
  To ensure non stop functioning of the bank,
  To act as Backup for Primary data center.

BPR (Bussiness Process Re-engineering)

 Its useful in Introducing New technologies to existing CBS platform.


Check your Progress: (This is the end of IIBFs JAIIB books practice bits. This is for Education Purposes only)

l. A computer network mainly used to share

(a) Data
(b) Software
(c) Hardware
(d) All of the above
(e) None of these

2. Terminals connected to a server is known as

(a) Clients
(b) Nodes
(c)  (a) & (b) 
(d) CPU
(e) None of these


3. For uninterrupted power supply in branch computerisation, the following device is used,

(a) Online UPS
(b) Offline UPS
(c) Convertor
(d) Generator
(e) None of these



4. Proper functioning of a computerised System is ensured by

(a) Generation of audit trails
(b) Exceptional transaction report
(c) Tallying of cash book 
(d)  All of the above
(e) None of these


5. In muiti-user computer networking

(a) Computers are based on a centralised processing concept
(b) Various terminals are attached to the main computer
(c) All data and information is kept on the main computer
(d) Large No.of users can be connected to a central computer
(e) All of above


6. In star topology

(a)Each node is joined to the central node by a separate link
(b) Devices are connected in a closed loop
(c) Information is passed from one node to the another in series
(d) Devices on the network are connected to a single continuous cable 
(e) All of above


7. In bus topology

(a) Each node is joined to the central node by a separate link
(b) Devices are connected in a closed loop
(c) Information is passed from one node to another in series
(d) Devices on the network are connected to a single continuous cable
(e) All of above


8. In ring topology

(a) Each node is joined to the central node by a separate link
(b) Devices are connected in a closed loop
(c) Information is passed from one node to the other in series 
(d) (b) & (c)
(e) All of above


9.  In Core banking system 

(a) Branches are connected to a central host
(b) Branch automation modules and delivery channels are incorporated
(c) Transactions are done centrally and online
(d) All of above
(e) None of these


10. Benefits in Core Banking is

(a) Reliable centralised data recovery
(b) Data warehousing and data mining technologies
(c) Integrated customer centric services
(d) Core infrastructure can be used for future expansion
(e) All of above


ANSWERS (TO CHECK-YOUR PROGRESS):

1- (d     2. (c).    3. (a),   4. (d)      , 5. (e),      6. (a),     7. (d).       8. (c),     9. (d),       10. (e)

Thank you friends, keep smiling.........


Guidance will continuessss.............!!!!!!!!!!!!!!1

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