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What is the different type of networking / internetworking devices?
1. Repeater: Also known as a regenerator, it is an electronic device that operates only at physical layer. It gets the signal in the network before it becomes weak, regenerates the original bit pattern and gets the refreshed copy back in to the link.
2. Bridges: These function both in the physical and data link layers of LANs of similar type. They separate a larger network in to smaller segments. They contain logic that permit them to keep the traffic for every segment separate and thus are repeaters that relay a frame only the side of the segment having the intended recipient and control congestion.
3. Routers: They relay packets between multiple interconnected networks (i.e. LANs of dissimilar type). They operate in the physical, data link and network layers. They have software that enables them to verify which of the several possible paths the best for a particular transmission is.
4. Gateways: They relay packets between networks that have different protocols (e.g. among a LAN and a WAN). They accept a packet formatted for one protocol and change it to a packet formatted for another protocol before forwarding it. They operate in all seven layers of the OSI model.
Used in IP Networks to break up larger networks into slighter subnetworks. It is used to decrease network traffic, Optimized network performance, and make simpler management i.e. t
Work-Sharing Constructs A work-sharing construct distributes the implementation of the associated region between the members of the team that encounters it. A work-sharing cons
Design, develop and build network systems
Identify Connectivity Problems Step 1: Use the ping command to test network connectivity. Use the following table to test the connectivity of every network device.
Cisco Router architecture Overall architecture of Cisco 2600 router is given below The Following components of routers are 1. WIC slots 2. communications
Gives excellent low-level control of parallelism; Portable; Minimal overhead in data distribution and parallel synchronisation; and It is less error prone. Drawb
Root DNS Servers A root server is a serve which consists of the entire hierarchy of servers. A root server usually does not store any information about domains but
DNS Message There are the only two kinds of DNS message DNS query and reply messages. Further mote both query and reply message have the same format as shown in figure.
Name the layer responsible for putting 1s and 0s into a logical group? Ans) Frames are broken down into 1s and 0s and placed onto the physical medium by the Data Lin layer.
Radio Waves - Frequency ranges: 3 KHz to 1 GHz - Omni directional - Susceptible to interference by other antennas utilizing same frequency or band - Ideal for long-di
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