Microscan Infocommtech Network Engineer L1 Interview Questions, Process, and Tips

A VLAN (Virtual Local Area Network) is a logical grouping of devices on the same physical network, allowing for segmentation and improved network performance.

• VLANs are used to separate broadcast domains in a network.

• They can improve network security by isolating traffic between different VLANs.

• VLANs can be configured based on port, MAC address, or protocol.

• Example: VLAN 10 for finance department, VLAN 20 for marketing

DWDM stands for Dense Wavelength Division Multiplexing, OSPF is Open Shortest Path First, EIGRP is Enhanced Interior Gateway Routing Protocol, OLT is Optical Line Terminal, and ONU is Optical Network Unit.

• DWDM is a technology that multiplexes multiple optical carrier signals on a single optical fiber by using different wavelengths of laser light.

• OSPF is a routing protocol used for exchanging routing information between...read more

Yes, CCNA certified. EtherChannel is a technology used to combine multiple physical links into a single logical link for increased bandwidth and redundancy.

• EtherChannel is a Cisco proprietary technology used to bundle multiple physical links into a single logical link.

• It provides increased bandwidth and redundancy by load balancing traffic across the links.

• EtherChannel can be configured in different modes such as on, a...read more

BGP stands for Border Gateway Protocol, a routing protocol used to exchange routing information between different autonomous systems on the internet.

• BGP is used to make routing decisions based on network policies, rules, and paths.

• It is a path vector protocol that allows routers to share information about the best path to reach a certain destination.

• BGP operates on TCP port 179 and uses TCP connections to exchange rout...read more