Ericsson Engineer - Network Operations Interview Questions and Answers

I am open to any location that offers growth opportunities and a challenging work environment.

• Open to relocation for the right opportunity

• Prefer locations with strong networking infrastructure

• Interested in locations with tech hubs or opportunities for professional development

My current CCTC is $80,000 per year.

• Current CCTC is $80,000 per year

• CCTC may include salary, bonuses, benefits, etc.

• Negotiable based on experience and qualifications

Border Gateway Protocol

• BGP stands for Border Gateway Protocol

• It is a standardized exterior gateway protocol used to exchange routing information between different autonomous systems on the internet

• BGP helps in determining the best path for data to travel between networks

• It is commonly used by Internet Service Providers (ISPs) and large organizations to connect to multiple networks

• BGP operates on TCP port 179

Routers are networking devices that forward data packets between computer networks.

• Routers operate at the network layer of the OSI model

• They use routing tables to determine the best path for data packets

• Routers can connect different types of networks, such as LANs and WANs

Expected CTC (Cost to Company) for the position

• ECTC stands for Expected Cost to Company

• It includes salary, bonuses, benefits, and any other compensation offered by the employer

• Candidates should provide their expected salary range based on their experience and skills

Worked as a Network Engineer at XYZ Company for 3 years.

• Managed and maintained network infrastructure

• Configured routers, switches, and firewalls

• Troubleshooted network issues and implemented solutions

• Collaborated with cross-functional teams for project implementations

I am a highly experienced Senior Network Engineer with a strong background in designing, implementing, and managing complex network infrastructures.

• Over 10 years of experience in network engineering

• Proficient in Cisco, Juniper, and Palo Alto technologies

• Skilled in network design, implementation, and troubleshooting

• Certified in CCNP and JNCIP

• Led successful network upgrade projects at previous companies

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