System & Network Engineer Interview Question and Answer
1. How Many Layers are There in an OSI Reference Model? Name them. Ans. There are 7 Layers in an OSI (Open Systems Interconnection) Reference Model. They are: (1) Physical Layer (2) Data Link Layer (3) Network Layer (4) Transport Layer (5) Session Layer (6) Presentation Layer (7) Application Layer 2. How Many Types of Network ? Area Base Network- LAN, MAN, WAN, CAN, SAN, PAN Architecture Base Network- Client-Server Network, Peer-to-Peer Network Topology Base Network- Star, Ring, Bus, Mesh, Tree, Hybrid 3. What is the Difference Between Full Duplex and Half Duplex Devices? Answer: A Full Duplex Device is Preferable, because a Full Duplex Device can Send and Receive Data Packets Simultaneously. However, with a Half Duplex Device, the Device Must Finish Receiving a Message Before it Can then Send a Message. This can Lead to Slower Transmission Speeds and Increase Network Latency. 4. How does RIP Differ from EIGRP? RIP and