Nokia Graduate Engineer Interview Questions and Answers

Q1. 1. What is wireless communication?
Ans. 
Wireless communication refers to the transmission of information without the use of physical connections or wires.
• Wireless communication allows devices to communicate with each other over a distance using electromagnetic waves.

• It enables the transfer of data, voice, and video signals wirelessly.

• Examples of wireless communication technologies include Wi-Fi, Bluetooth, cellular networks, satellite communication, and radi
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Q2. 1. What is Telecommunication?
Ans. 
Telecommunication is the transmission of information over a distance using electronic means.
• Telecommunication involves the exchange of information between two or more parties.

• It uses various technologies such as telephones, radios, television, and the internet.

• Telecommunication enables real-time communication, allowing people to connect and communicate regardless of their physical location.

• Examples of telecommunication...read more
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Q3. What are the types of modulations?
Ans. 
Modulation is the process of varying a carrier signal in order to transmit information.
• Amplitude Modulation (AM) - varying the amplitude of the carrier signal

• Frequency Modulation (FM) - varying the frequency of the carrier signal

• Phase Modulation (PM) - varying the phase of the carrier signal

• Quadrature Amplitude Modulation (QAM) - combining amplitude and phase modulation

• Pulse Amplitude Modulation (PAM) - varying the amp...read more
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Q4. What is the difference between 2G, 3G, 4G? Why 5G?
Ans. 
2G, 3G, 4G, and 5G are different generations of mobile network technology.
• 2G refers to second-generation mobile networks that primarily provided voice and text messaging services.

• 3G introduced faster data transfer speeds, enabling internet browsing, video calling, and multimedia services.

• 4G further improved data speeds, offering high-quality video streaming, online gaming, and advanced mobile applications.

• 5G is the fif...read more
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Q5. Questions regarding my projects which were based on radar.
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Q6. How to remove elements from list?
Ans. 
To remove elements from a list, use the remove() method or list comprehension.
• Use the remove() method to remove a specific element from the list.

• Use list comprehension to remove multiple elements based on a condition.

• Example: myList.remove('element') or myList = [x for x in myList if x != 'element']
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Basic questions based on aptitude, English and reasoning

Q1. What is frequencyand explain it ?
Ans. 
Frequency is the number of cycles per second in a periodic waveform.
• Frequency is measured in Hertz (Hz).

• It determines the pitch of a sound wave.

• Higher frequency means higher pitch and vice versa.

• Frequency is used in various fields like electronics, physics, and communication.

• Example: The frequency of a radio station is 98.5 MHz.
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Q2. What is wavelength and explain it?
Ans. 
Wavelength is the distance between two consecutive peaks or troughs of a wave.
• Wavelength is measured in meters or nanometers.

• It determines the color of light and sound frequency.

• Shorter wavelengths have higher energy than longer wavelengths.

• Examples include the wavelength of visible light, radio waves, and X-rays.
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Q3. Relationship between wavelength and frequency
Ans. 
Wavelength and frequency are inversely proportional to each other.
• Wavelength is the distance between two consecutive peaks or troughs of a wave.

• Frequency is the number of waves passing through a point in one second.

• The higher the frequency, the shorter the wavelength.

• The lower the frequency, the longer the wavelength.

• The relationship between wavelength and frequency is described by the equation: wavelength = speed of l...read more
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Q4. What is pulse code modulation
Ans. 
Pulse code modulation is a digital representation of analog signals.
• PCM is used to convert analog signals into digital signals.

• It involves sampling the analog signal at regular intervals and quantizing the amplitude of each sample.

• The resulting digital signal can be transmitted or stored more efficiently than the original analog signal.

• PCM is commonly used in audio and video recording and transmission.

• It is also used i
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Q5. Questions related to iot and it's applications
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3 medium level coding questions.

Q1. Interviewer asked about java concepts, Oops concepts and then some string based DSA questions using hashmap.
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Q2. Write a code to count the no. of occurrence of each character in a string.
Ans. 
Code to count the occurrence of each character in a string.
• Use a dictionary to store the count of each character.

• Iterate through the string and update the count in the dictionary.

• Print the dictionary to display the count of each character.
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In aptitude test we have to solve 60 question in 60minutes

A single topic is given to the each candidate

Q1. Most asked questions from your academic projects and 1 language and database language
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Q1. Mostly non tech questions
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