Ericsson Interview Questions, Process, and Tips

MapReduce is a programming model used in Hadoop for processing large datasets in parallel.

• MapReduce breaks down a big data processing task into smaller chunks that can be processed in parallel.

• The 'map' phase processes input data and produces key-value pairs.

• The 'reduce' phase aggregates the key-value pairs generated by the map phase.

• MapReduce is fault-tolerant and scalable, making it ideal for processing large dataset...read more

MPLS ping is a tool used to test connectivity between two MPLS-enabled devices by sending ICMP echo requests.

• MPLS ping works by encapsulating ICMP echo requests within MPLS packets.

• It uses the MPLS label stack to route the packets through the network.

• The receiving device responds with an ICMP echo reply, allowing the sender to verify connectivity.

• MPLS ping is commonly used for troubleshooting MPLS networks and verifyin

MPLS is required for efficient and reliable data packet forwarding in complex networks.

• MPLS allows for traffic engineering, prioritization, and quality of service in networks.

• It provides better performance and reliability compared to traditional IP routing.

• MPLS is essential for connecting multiple locations in a secure and efficient manner.

• It simplifies network management and troubleshooting by creating virtual paths f

The call flow for VOLTE-IMS involves registration, session establishment, media negotiation, and call termination.

• User equipment registers with the IMS network

• Session is established between caller and callee

• Media negotiation for voice and video codecs

• Call termination when either party ends the call

Wireless communication refers to the transmission of information without the use of physical connections or wires.

• Wireless communication allows devices to communicate with each other over a distance using electromagnetic waves.

• It enables the transfer of data, voice, and video signals wirelessly.

• Examples of wireless communication technologies include Wi-Fi, Bluetooth, cellular networks, satellite communication, and radi

Telecommunication is the transmission of information over a distance using electronic means.

• Telecommunication involves the exchange of information between two or more parties.

• It uses various technologies such as telephones, radios, television, and the internet.

• Telecommunication enables real-time communication, allowing people to connect and communicate regardless of their physical location.

• Examples of telecommunication...read more

Modulation is the process of varying a carrier signal in order to transmit information.

• Amplitude Modulation (AM) - varying the amplitude of the carrier signal

• Frequency Modulation (FM) - varying the frequency of the carrier signal

• Phase Modulation (PM) - varying the phase of the carrier signal

• Quadrature Amplitude Modulation (QAM) - combining amplitude and phase modulation

• Pulse Amplitude Modulation (PAM) - varying the amp...read more

2G, 3G, 4G, and 5G are different generations of mobile network technology.

• 2G refers to second-generation mobile networks that primarily provided voice and text messaging services.

• 3G introduced faster data transfer speeds, enabling internet browsing, video calling, and multimedia services.

• 4G further improved data speeds, offering high-quality video streaming, online gaming, and advanced mobile applications.

• 5G is the fif...read more

To remove elements from a list, use the remove() method or list comprehension.

• Use the remove() method to remove a specific element from the list.

• Use list comprehension to remove multiple elements based on a condition.

• Example: myList.remove('element') or myList = [x for x in myList if x != 'element']