Orange Business Network Support Engineer Interview Questions and Answers

Q1. Tell me about your self
Ans. 
I am a dedicated and experienced Network Support Engineer with a strong background in troubleshooting and resolving network issues.
• Over 5 years of experience in network support roles

• Proficient in configuring and maintaining network devices such as routers and switches

• Skilled in diagnosing and resolving network connectivity issues

• Familiar with network monitoring tools like Wireshark and Nagios

• Certified in Cisco CCNA and
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Q2. Some basic questions in networking
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Q1. What is DNS please explain
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DNS stands for Domain Name System, which translates domain names to IP addresses.
• DNS is like a phone book for the internet, translating human-readable domain names (like google.com) to IP addresses (like 172.217.3.206).

• It helps users access websites by typing in easy-to-remember domain names instead of complex IP addresses.

• DNS servers store records of domain names and their corresponding IP addresses, allowing for effi...read more
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Q2. What is DHCP please explain
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DHCP stands for Dynamic Host Configuration Protocol, used to automatically assign IP addresses to devices on a network.
• DHCP eliminates the need for manual IP address configuration on each device

• It assigns IP addresses dynamically, allowing for efficient use of available addresses

• DHCP servers lease IP addresses to devices for a specific period of time

• DHCP also provides other network configuration information, such as su...read more
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Q1. Basic questions about ip address and mac addresses
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Q2. Switch, router, ip class, and some scenario based questions
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Q1. DHCP working principles
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DHCP assigns IP addresses to devices on a network automatically
• DHCP server assigns IP addresses to devices on the network

• DHCP clients request IP addresses from the DHCP server

• DHCP uses a lease mechanism to manage IP address assignments

• DHCP reduces the administrative burden of manually assigning IP addresses
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Q2. DNS working principles
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DNS is a system that translates domain names to IP addresses to locate resources on the internet.
• DNS resolves domain names to IP addresses

• DNS operates through a distributed database system

• DNS uses hierarchical structure with top-level domains like .com, .org, etc.

• DNS queries are resolved through recursive and iterative processes
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Q3. Scenario based question DHCP
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Q4. Spanning tree protocol
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Q1. Question related to retention
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Q2. Question related to aspirations
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Q1. Basics of networking
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Q2. 3 tier architecture
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Coding test contains 2 questions

Q1. What are the information in TCP IP Header?
Ans. 
TCP IP Header contains information such as source and destination IP addresses, port numbers, sequence numbers, and more.
• Source IP address

• Destination IP address

• Source port number

• Destination port number

• Sequence number

• Acknowledgment number

• Header length

• Checksum
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Q2. What is App ID in Palo Alto Firewalls?
Ans. 
App ID in Palo Alto Firewalls is a feature that identifies applications on the network based on various parameters.
• App ID uses multiple methods to identify applications, including port-based, protocol-based, and application signature-based identification.

• It allows administrators to create policies based on specific applications rather than just ports or protocols.

• App ID helps in enhancing security by allowing granular ...read more
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Q3. What is the SP3 Architecture of Palo Alto Firewalls?
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SP3 Architecture of Palo Alto Firewalls refers to Security Processing Plane, Control Plane, and Data Plane.
• SP3 Architecture consists of Security Processing Plane (SP), Control Plane (C), and Data Plane (D)

• Security Processing Plane (SP) handles security functions like threat prevention and decryption

• Control Plane (C) manages routing and firewall policies

• Data Plane (D) processes and forwards traffic based on firewall pol...read more
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