Nokia Network Specialist Interview Questions and Answers

4G architecture includes radio access network (RAN), core network, and user equipment (UE) with interfaces like S1, X2, and LTE-Uu.

• 4G architecture consists of Radio Access Network (RAN), Core Network, and User Equipment (UE)

• Interfaces used in 4G architecture include S1, X2, and LTE-Uu

• RAN connects UE to the core network, while X2 is used for communication between base stations

• LTE-Uu is the air interface between UE and b

PRB can be calculated by dividing the total available bandwidth by the bandwidth per PRB.

• Calculate total available bandwidth

• Determine the bandwidth per PRB

• Divide total available bandwidth by bandwidth per PRB to get the number of PRBs

LAN technology refers to the methods and protocols used to create local area networks for connecting devices within a limited geographical area.

• LAN technology includes Ethernet, Wi-Fi, and Token Ring.

• Ethernet is the most common LAN technology, using CSMA/CD for collision detection.

• Wi-Fi uses wireless signals to connect devices within a LAN.

• Token Ring is a less common LAN technology that uses a token-passing protocol.

• LA...read more

Router technique refers to the method used by a router to determine the best path for forwarding data packets.

• Routing protocols like OSPF, EIGRP, and BGP are used to determine the best path for data packets

• Static routing involves manually configuring the routes on the router

• Dynamic routing allows routers to communicate with each other to determine the best path

• Packet switching is used by routers to forward data packets

The OSI Model defines the functions of each layer in a network communication system.

• Physical layer - transmits raw data bits over a physical medium

• Data link layer - provides error detection and correction, and organizes data into frames

• Network layer - routes data packets between different networks

• Transport layer - ensures reliable data delivery and manages end-to-end communication

• Session layer - establishes, maintains,...read more

TCP/IP model is a conceptual framework used for understanding networking protocols.

• Consists of four layers: Application, Transport, Internet, Link

• Each layer has specific functions and protocols

• Data is encapsulated and decapsulated as it moves through the layers

• Example: HTTP operates at the Application layer, TCP at the Transport layer

IPRAN solution stands for Internet Protocol Radio Access Network, which is a network architecture that combines IP/MPLS and mobile technologies.

• IPRAN solution is used to provide high-speed internet access to mobile users.

• It helps in optimizing network resources and improving network performance.

• Examples of IPRAN solution providers include Cisco, Huawei, and Juniper Networks.

Different types of L2VPN include Ethernet VPN (EVPN), Virtual Private LAN Service (VPLS), and Layer 2 Tunneling Protocol (L2TP).

• Ethernet VPN (EVPN) - Uses BGP as the control plane protocol for distributing MAC addresses across the network.

• Virtual Private LAN Service (VPLS) - Extends a LAN over the network, allowing multiple sites to appear as if they are on the same LAN segment.

• Layer 2 Tunneling Protocol (L2TP) - Creat...read more

MPLS (Multiprotocol Label Switching) is a protocol used in high-performance telecommunications networks to direct data packets along predefined paths.

• MPLS is used to improve network performance by efficiently routing data packets based on labels instead of IP addresses.

• It is commonly used in scenarios where quality of service (QoS) and traffic engineering are important, such as in large enterprise networks or service p...read more

Three different INTER_AS solutions and their advantages and disadvantages

• Option 1: Option A - Advantages: Scalability, Disadvantages: Complexity

• Option 2: Option B - Advantages: Simplicity, Disadvantages: Limited scalability

• Option 3: Option C - Advantages: Flexibility, Disadvantages: Potential security risks

Network flow in Nexus switches involves understanding vPC communication and troubleshooting SSH connectivity issues.

• Network flow in Nexus switches involves the movement of data packets between devices connected to the switches.

• vPC (Virtual Port Channel) communication in Nexus switches allows for link aggregation and redundancy by combining multiple physical links into a single logical link.

• Troubleshooting SSH connectiv...read more