ROKI Senior Data Engineer Interview Questions and Answers

A solution for solving the Rubik's cube

• Use the layer-by-layer method

• Solve the first layer cross

• Solve the first layer corners

• Solve the second layer

• Solve the third layer cross

• Solve the third layer corners

• Orient the third layer corners

• Permute the third layer corners

• Permute the third layer edges

I am open to working in any location as long as the job is challenging and rewarding.

• Open to relocation

• Prioritize job satisfaction over location

• Flexible with work arrangements

Networking refers to the process of connecting devices and systems to share information and resources.

• Networking involves the use of hardware and software to connect devices and systems.

• It allows for the sharing of information and resources such as files, printers, and internet access.

• Networking can be done through wired or wireless connections.

• Examples of networking technologies include Ethernet, Wi-Fi, and Bluetooth.

• ...read more

A router is a networking device that forwards data packets between computer networks.

• A router operates at the network layer of the OSI model.

• It uses routing tables to determine the best path for data packets to reach their destination.

• Routers can connect multiple networks together, such as LANs and WANs.

• They provide network address translation (NAT) to allow multiple devices to share a single public IP address.

• Routers ...read more

Subnetting is the process of dividing a network into smaller subnetworks, called subnets, to improve network efficiency and security.

• Subnetting allows for better utilization of IP addresses by dividing a network into smaller segments.

• It helps in improving network performance by reducing network congestion.

• Subnetting enhances network security by isolating different departments or devices within a network.

• It enables effi...read more

Protocols are a set of rules and guidelines that govern the communication between devices or systems.

• Protocols define the format and order of messages exchanged between devices.

• They ensure reliable and efficient communication by specifying error detection and correction mechanisms.

• Examples of protocols include TCP/IP, HTTP, SMTP, and FTP.

• Protocols can operate at different layers of the network stack, such as the applic

Static protocols are fixed and do not change, while dynamic protocols can adapt to changing network conditions.

• Static protocols are typically used in simple networks with predictable traffic patterns.

• Dynamic protocols are used in complex networks with varying traffic patterns.

• Examples of static protocols include ARP and RARP.

• Examples of dynamic protocols include OSPF and BGP.

TCS is a leading global IT services company with a strong reputation and diverse opportunities for growth.

• TCS has a strong reputation in the IT industry for delivering high-quality services and solutions.

• TCS offers diverse opportunities for growth and career development.

• TCS has a global presence, providing exposure to different cultures and working environments.

• TCS values innovation and encourages employees to think cr...read more

I expect to receive proper training and support to transition into the IT field successfully.

• I expect to be provided with relevant training and resources to learn the necessary skills for the role.

• I hope for guidance and mentorship from experienced IT professionals within the company.

• I am eager to contribute my non-IT skills and knowledge to the team, bringing a fresh perspective.

• I am committed to putting in the effort...read more

R, L, and C are basic electronic components used in circuits for resistance, inductance, and capacitance respectively.

• Resistors (R) limit current flow and reduce voltage

• Inductors (L) store energy in a magnetic field and resist changes in current

• Capacitors (C) store energy in an electric field and pass AC signals while blocking DC signals

• These components are used in various circuits such as filters, oscillators, and amp

Passive components do not require an external power source, while active components do.

• Passive components include resistors, capacitors, and inductors.

• Active components include transistors, diodes, and integrated circuits.

• Passive components do not amplify signals, while active components do.

• Passive components are used to control the flow of electricity, while active components are used to create and amplify signals.

A switch is a networking device that connects devices together on a local area network (LAN) and forwards data packets between them.

• Switches operate at the data link layer of the OSI model.

• They use MAC addresses to forward data to the correct destination.

• Switches can improve network performance by reducing network congestion and collisions.

• Examples of switches include Ethernet switches, LAN switches, and network switch

LAN, MAN, WAN, PAN are types of computer networks that differ in their geographical coverage and purpose.

• LAN (Local Area Network) is a network that covers a small area like a home, office, or building.

• MAN (Metropolitan Area Network) is a network that covers a larger area like a city or town.

• WAN (Wide Area Network) is a network that covers a large geographical area like a country or the whole world.

• PAN (Personal Area Ne...read more

Potential difference is the difference in electric potential between two points in an electric field.

• Potential difference is measured in volts (V)

• It is the work done per unit charge to move a charge from one point to another

• It is the driving force that causes current to flow in a circuit

• Potential difference can be calculated using Ohm's law: V = IR

• A battery creates a potential difference between its terminals to power

A modem is a device that modulates and demodulates signals to enable communication between devices over a network.

• Modulates digital signals into analog signals for transmission over telephone lines

• Demodulates analog signals back into digital signals for use by the receiving device

• Can be used for dial-up internet connections or to connect to a local area network (LAN)

• Examples include cable modems, DSL modems, and wirele

I am a system engineer with experience in designing and implementing complex systems.

• I have a degree in computer engineering

• I have worked on projects involving network infrastructure design and implementation

• I am proficient in programming languages such as Java and Python

• I have experience with cloud computing platforms such as AWS and Azure

• I am a quick learner and enjoy working in a team environment

My academics were affected by personal circumstances and health issues.

• I faced some personal challenges during my academic years

• I had to take a break from studies due to health issues

• I have since worked hard to improve my skills and knowledge

• I have gained practical experience through internships and projects

I have the necessary technical skills and experience to excel in this role.

• I have a strong background in systems engineering and have successfully completed several complex projects.

• I am a quick learner and am always eager to expand my knowledge and skills.

• I am a team player and work well with others to achieve common goals.

• I am highly organized and detail-oriented, ensuring that all tasks are completed accurately and ...read more

Yes, I am willing to work in night shifts if required.

• I understand that as a system engineer, there may be times when working in night shifts is necessary to ensure the smooth functioning of the system.

• I am flexible and adaptable to changing work schedules and can manage my time effectively to ensure that I am well-rested and alert during night shifts.

• I have prior experience working in night shifts and understand the c...read more

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• Extensive experience in C programming

• Proficient in writing efficient and optimized code

• Familiar with memory management and pointers

• Comfortable with low-level programming and system-level development