CHEAR INDIA Interview Questions and Answers

Internet is a global network of interconnected computers and servers that communicate with each other using standardized protocols.

• Internet is a network of networks that allows communication and sharing of information across the globe.

• It was developed in the late 1960s and early 1970s by the United States Department of Defense.

• The World Wide Web, email, and instant messaging are some of the popular applications of the internet.

• The internet has revolutionized the way we commun...read more

OSPF is a routing protocol used in computer networks to determine the best path for data to travel.

• OSPF stands for Open Shortest Path First

• It is a link-state routing protocol

• OSPF routers exchange information about the network topology to determine the best path for data to travel

• There are several stages in OSPF: neighbor discovery, database synchronization, and route calculation

• OSPF uses a hierarchical structure with areas to reduce the amount of routing information that need...read more

OSPF, ISIS, and BGP are three essential protocols in the Networking domain.

• OSPF (Open Shortest Path First) is a link-state routing protocol used for interior routing within a single autonomous system.

• ISIS (Intermediate System to Intermediate System) is a link-state routing protocol used for interior routing within a single autonomous system.

• BGP (Border Gateway Protocol) is a path-vector routing protocol used for routing between autonomous systems.

• OSPF and ISIS are used for in...read more

RSSI stands for Received Signal Strength Indicator and is a measurement of the power level being received by a device.

• RSSI is a value that indicates the strength of the signal being received by a device.

• RF devices work on the best RSSI by constantly monitoring and adjusting their connection to maintain the strongest signal.

• Devices can switch between different access points or channels to find the best RSSI for optimal performance.

• Examples of RF devices include Wi-Fi routers, ...read more

Routing protocol is a set of rules used by routers to determine the best path for data packets to reach their destination.

• Routing protocols help routers communicate with each other to share information about network topology.

• They use algorithms to calculate the best path for data packets based on factors like hop count, bandwidth, and delay.

• Examples of routing protocols include RIP, OSPF, EIGRP, and BGP.

Networking refers to the practice of connecting devices together to share resources and communicate with each other.

• Networking involves the use of protocols and technologies such as TCP/IP, DNS, DHCP, and VLANs.

• Common networking devices include routers, switches, firewalls, and access points.

• Networking can be used for a variety of purposes, such as sharing files and printers, accessing the internet, and enabling communication between devices.

• Networking can be wired or wireles...read more

BGP (Border Gateway Protocol) is a standardized exterior gateway protocol used to exchange routing information between different autonomous systems on the internet.

• BGP has four main stages: Idle, Connect, OpenSent, and Established.

• In the Idle stage, the BGP process is not running.

• In the Connect stage, a TCP connection is established with the neighbor.

• In the OpenSent stage, BGP parameters are exchanged.

• In the Established stage, the BGP peers are fully synchronized and can exch...read more

MCS stands for Multiple Channel Support and is a feature that allows a device to communicate on multiple channels simultaneously.

• MCS enables devices to increase data throughput by utilizing multiple channels for communication.

• It is commonly used in wireless communication protocols like Wi-Fi to improve network performance.

• For example, in Wi-Fi 6, MCS allows devices to transmit data on multiple channels at the same time, increasing overall network speed.