10   THINGS    NETWORK   ENGINEER     MUST   KNOW

            Required To Become Successful Network Engineer


The concepts we learned during engineering are most important for a career but we don't know how to and where to use all these concepts. So in this Blog, the subject topics that help you during your day to job activity and how they actually come into use are described.....Also, these skills are the most important skills for making a career in Networking Field.

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As a  network engineer, these are key points or skills we required for a career and for a job roll in any industry or company in the fild of the network area.
we are disclosing all pint one by one is given below.

  1. Topology

it's a basic thing of networking field it's very important need to know about it 
topology and why we are used in network area now see about it.



  • Point To Point:-

               Point to Point topology is the simplest topology that connects two nodes directly together with a common link.

 The entire bandwidth of the common link is reserved for transmission between those two nodes. The point-to-point connections use an actual length of wire or cable to connect the two ends, but other options, such as satellite links, or microwaves are also possible.

Example:- When you change TV channels by remote, you are establishing a point-to-point connection between the remote control and the TV’s control system.

Advantages of Point to Point Topology:

  • Highest Bandwidth because there are only two nodes having the entire bandwidth of a link
  • Very fast compared to other network topologies because it can access only two nodes.
  • Very simple connectivity
  • It provides low Latency
  • Easy to handle and maintain
  • Node Can be Replaced in few seconds

Disadvantages of Point to Point Topology:

  • This topology is only used for small areas where nodes are closely located.
  • The entire network depends on the common channel in case of link broken entire network will become dead.
  • There is another major drawback of this topology there are only two nodes if any of the nodes stops working, data cannot be transfer across the network.
 
                                 Point to Point

  • Bus:-

         A bus topology is a topology for a Local Area Network (LAN) in which all the nodes are connected to a single cable. 

The bus topology is designed in such a way that all the stations are connected through a single cable known as a backbone cable. 
Each node is either connected to the backbone cable by drop cable or directly connected to the backbone cable. 
When a node wants to send a message over the network, it puts a message over the network. All the stations available in the network will receive the message whether it has been addressed or not. 
The bus topology is mainly used in 802.3 (ethernet) and 802.4 standard networks. 
The configuration of a bus topology is quite simpler as compared to other topologies.
The backbone cable is considered as a "single lane" through which the message is broadcast to all the stations. 
The most common access method of the bus topologies is CSMA (Carrier Sense Multiple Access).

Example:-  Ethernet networks also use a bus topology.

Advantages of Bus topology:

  • Low-cost cable: In a bus topology, nodes are directly connected to the cable without passing through a hub. Therefore, the initial cost of installation is low.
  • Moderate data speeds: Coaxial or twisted pair cables are mainly used in bus-based networks that support up to 10 Mbps.
  • Familiar technology: Bus topology is a familiar technology as the installation and troubleshooting techniques are well known, and hardware components are easily available.
  • Limited failure: A failure in one node will not have any effect on other nodes.

Disadvantages of Bus topology:

  • Extensive cabling: A bus topology is quite simpler, but still it requires a lot of cabling.
  • Difficult troubleshooting: It requires specialized test equipment to determine the cable faults. If any fault occurs in the cable, then it would disrupt the communication for all the nodes.
  • Signal interference: If two nodes send the messages simultaneously, then the signals of both the nodes collide with each other.
  • Reconfiguration difficult: Adding new devices to the network would slow down the network.
  • Attenuation: Attenuation is a loss of signal that leads to communication issues. Repeaters are used to regenerate the signal.




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