Qualcomm Interview Questions, Process, and Tips

Q1. What is volatile keyword
Ans. 
Volatile keyword in Java is used to indicate that a variable's value will be modified by multiple threads.
• Volatile keyword ensures visibility of changes made by one thread to other threads.

• It prevents compiler optimizations that could reorder code and cause unexpected behavior in multi-threaded environments.

• Volatile keyword is used for variables accessed by multiple threads without synchronization.

• Example: 'volatile in
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Q2. Difference between union and structure
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Union is a data structure that allows storing different data types in the same memory location, while structure is a data structure that allows storing different data types in a single unit.
• Union uses the same memory location for all its members, while structure allocates separate memory for each member.

• In a union, only one member can be accessed at a time, while in a structure, all members can be accessed simultaneous...read more
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Reverse the string in place I/P : "I love my India" O/P: "I evol ym aidnI"

Q1. Questions about DDR, Memory layout of program, What is L1, L2 cache? how is memory virtualization is been done?
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Leetcode questions followed by technical subjects

Q1. Describe the TARA flow
Ans. 
TARA flow is a process used in semiconductor manufacturing to optimize the design and production of integrated circuits.
• TARA stands for Test Analysis and Reliability Assessment

• It involves analyzing test data to identify potential issues and improve product reliability

• The flow includes steps such as failure analysis, root cause identification, and design optimization

• TARA flow helps in ensuring the quality and reliabilit
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Q2. What is STRIDE in Cybersecurity?
Ans. 
STRIDE is a model used in cybersecurity to identify and categorize different types of security threats.
• STRIDE stands for Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege.

• It helps in understanding and addressing potential security risks in software systems.

• For example, spoofing involves pretending to be someone else to gain unauthorized access to a system.

• Tampering ...read more
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Q3. In ISO21434 what is distributed cybersecurity activities?
Ans. 
Distributed cybersecurity activities in ISO21434 refer to the implementation of cybersecurity measures across multiple components or systems within a network.
• Distributed cybersecurity activities involve securing various interconnected components or systems within a network.

• This includes implementing security measures such as firewalls, encryption, access controls, and intrusion detection systems.

• The goal is to protect ...read more
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Q4. What is Trustzone and what is exception levels?
Ans. 
TrustZone is a security feature in ARM processors that creates secure and non-secure worlds, while exception levels are privilege levels in ARM processors.
• TrustZone is a hardware-based security feature in ARM processors that divides the system into two worlds: secure and non-secure.

• Secure world runs trusted code and data, while non-secure world runs untrusted code and data.

• Exception levels in ARM processors determine t...read more
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Q5. Imagine an attack and guide through all steps involved to determine a Risk value. What is Feasibility ? What is impact and how risk is related to these factors ?
Ans. 
Feasibility, impact, and risk are key factors in determining the risk value of an attack.
• Feasibility refers to how likely an attack is to occur based on the resources and knowledge required.

• Impact measures the potential damage or consequences of the attack if successful.

• Risk is the combination of feasibility and impact, representing the likelihood and severity of the attack.

• To determine risk value, assess the feasibili...read more
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