S2 Infotech Network Support Engineer Interview Questions and Answers

MGCP, SIP, and SCCP are protocols used in telecommunications for controlling communication sessions.

• MGCP (Media Gateway Control Protocol) is used for controlling media gateways in VoIP networks.

• SIP (Session Initiation Protocol) is used for initiating, maintaining, and terminating real-time sessions like voice and video calls over IP networks.

• SCCP (Skinny Client Control Protocol) is a Cisco proprietary protocol used for...read more

Logs can be collected using various methods such as syslog, SNMP, agent-based monitoring, and log management tools.

• Use syslog to collect system logs from network devices

• Utilize SNMP to gather performance data and alerts from network devices

• Deploy agent-based monitoring tools on servers to collect detailed logs

• Implement log management tools like Splunk or ELK stack for centralized log collection and analysis

Call flow refers to the sequence of events that occur during a phone call or communication session.

• Call is initiated by the caller

• Call is routed through the network to the recipient

• Recipient answers the call

• Conversation takes place

• Call is terminated by either party

2G, 3G and 4G are mobile network technologies with different architectures.

• 2G uses circuit-switched technology and is primarily used for voice calls and text messages.

• 3G uses packet-switched technology and provides faster data transfer rates than 2G.

• 4G uses all-IP packet-switched technology and provides even faster data transfer rates than 3G.

• 4G also supports advanced features like VoLTE (Voice over LTE) and carrier ag...read more

Active DAS uses signal boosters to amplify and distribute wireless signals, while Passive DAS uses passive components like cables and antennas.

• Active DAS requires power to operate, while Passive DAS does not.

• Active DAS can cover larger areas and support more users, while Passive DAS is better suited for smaller areas.

• Active DAS is more expensive to install and maintain than Passive DAS.

• Examples of Active DAS include Wi...read more

eNodeB is a base station in LTE network responsible for radio communication with UE.

• eNodeB stands for evolved Node B

• It is responsible for radio resource management and control of UE

• It communicates with MME for mobility management and with SGW for user data forwarding

• It supports multiple antennas for MIMO transmission

• It can be connected to other eNodeBs to form a cluster for better coverage and capacity

• It uses S1 interf...read more

BTS and BSS are components of a cellular network. BTS is responsible for transmitting and receiving signals while BSS manages the radio resources.

• BTS stands for Base Transceiver Station and is responsible for transmitting and receiving signals to and from mobile devices.

• BSS stands for Base Station Subsystem and manages the radio resources, including frequency allocation and handover between cells.

• RF antenna is used to ...read more