NEC Cyber Security Analyst Interview Questions and Answers

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Q1. All Technical interview where I mentioned in my Resume
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Q1. As usual Askin my HR Interview
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Q1. Networking basics, one scenario question
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Q1. DHCP, DNS, PORT NUMBERS, SUBNETING
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Q1. Location, CTC, where you'll be see you in next 3 years?
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Q1. Explain DHCP and DORA process
Ans. 
DHCP is a network protocol that dynamically assigns IP addresses to devices on a network. DORA process involves Discover, Offer, Request, and Acknowledge stages.
• DHCP Discover: Client broadcasts a request for IP address

• DHCP Offer: Server responds with an available IP address

• DHCP Request: Client requests the offered IP address

• DHCP Acknowledge: Server confirms the IP address assignment
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Q2. How a personal computer communicate with a web application. Process (Scenario base)
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A personal computer communicates with a web application through a series of steps involving network protocols.
• The computer sends a request to the web application's server using the HTTP protocol.

• The server processes the request and sends back a response containing the requested information.

• The communication is facilitated by the TCP/IP protocol stack.

• Data is transmitted over the internet using IP addresses and domain n...read more
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Q1. How SSL handshake works
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SSL handshake is a process where a client and server establish a secure connection by exchanging encryption keys and verifying identities.
• Client sends a hello message to server with supported encryption algorithms

• Server responds with its own hello message, including its certificate

• Client verifies server's certificate and generates a pre-master secret

• Both client and server use the pre-master secret to generate a unique ...read more
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Q2. Arp and it's types
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ARP (Address Resolution Protocol) is a protocol used for mapping an IP address to a MAC address.
• ARP is used to resolve IP addresses to MAC addresses on a local network.

• There are two main types of ARP: ARP Request and ARP Reply.

• ARP Request is sent by a device to find the MAC address of another device with a known IP address.

• ARP Reply is sent in response to an ARP Request, providing the MAC address of the requested IP ad
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Simple basic question of dsa were asked

Q1. Questions asked from computer network . all the concepts of computer network are useful like osi layers, ipv4 vs ipv6, cloud computing , routers.
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Q2. Question on virtualization.
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Q3. Different layers of osi models.
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The OSI model has 7 layers that define how data is transmitted over a network.
• Layer 1: Physical layer - deals with the physical aspects of transmitting data

• Layer 2: Data link layer - responsible for error-free transfer of data between nodes

• Layer 3: Network layer - handles routing of data between different networks

• Layer 4: Transport layer - ensures reliable delivery of data between applications

• Layer 5: Session layer - e...read more
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Q1. Questions on family backgound
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Q2. Questions on introduce yourself.
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Q1. Explain TCP IP Model
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Q1. What's is the function of switch and router how to use in networking
Ans. 
Switches connect devices within a network, while routers connect different networks and enable communication between them.
• Switches operate at the data link layer of the OSI model and use MAC addresses to forward data within a network.

• Routers operate at the network layer of the OSI model and use IP addresses to route data between different networks.

• Switches create multiple collision domains, while routers create multipl...read more
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Q1. What is the role of as eng. To improve network
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The role of a network engineer is to improve network performance, security, and reliability through design, implementation, and maintenance.
• Designing and implementing network upgrades to increase performance

• Implementing security measures to protect against cyber threats

• Monitoring network traffic and troubleshooting issues to ensure reliability

• Optimizing network configurations for efficiency

• Collaborating with other IT p...read more
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Q1. As we selected us how to mange surveillance in our project
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Q1. Tell me about yourself. Previous role
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Q1. Diff between native vlan and default vlan and DHCP process
Ans. 
Native VLAN is used for untagged traffic, default VLAN is used when no VLAN is specified, DHCP process involves client requesting IP address from server.
• Native VLAN is used for untagged traffic on a trunk port

• Default VLAN is used when no VLAN is specified, typically VLAN 1

• DHCP process involves client sending a DHCP discover message, server offering an IP address, client requesting the offered IP address, and server ack
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