AT&T Network Specialist Interview Questions and Answers

Q1. 4g architect and interphase used?
Ans. 
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
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Q2. Regarding throughput and sinr degradation how to improve?
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Q3. How to calculate PRB?
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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
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Q4. OSS kpi knowledge?
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Q1. Regarding subnetting
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Q1. Regarding all networking
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Q1. Personal details
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Q1. Self interduction
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Q2. Pervious company experience
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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
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Q1. Fiber colour coding
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Q2. Splicing lan colour coding
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Q1. Salary discussion
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Q1. Network architecture
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Q2. LAN TECHNOLOGY in detail
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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
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Q1. OSI MODEL and Layers
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Q2. Router technique
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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
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Q3. OSI Model layer functionality
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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
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Q4. Routing Technology
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Q5. TCP IP MODEL in detail
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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
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Q6. FTTH technology
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Q7. Network Troubleshooting
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Q1. Introduce yourself
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Q2. Question about last job profile
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Q3. Salary excepted
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Q1. Network Engineer Olt OTDR Installation OFC
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Q2. To
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Q1. Tell mee about yourself
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Q2. What is networking
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Network related questions

Q1. What is salary expectation?
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Q2. Document verification
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Q1. Volte call flow
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