10+ Evelyn Learning Systems Interview Questions and Answers

Primary Key, Foreign Key and Normalization are important concepts in SQL for data integrity and efficient data retrieval.

• Primary Key is a unique identifier for each record in a table.

• Foreign Key is a field in one table that refers to the Primary Key in another table.

• Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.

• Normalization helps to avoid data inconsistencies and anomalies.

• Example: A customer table may have a Pr...read more

Protocols used in application layers include HTTP, FTP, SMTP, POP3, IMAP, DNS, DHCP, SNMP, and Telnet.

• HTTP is used for web browsing

• FTP is used for file transfer

• SMTP, POP3, and IMAP are used for email communication

• DNS is used for domain name resolution

• DHCP is used for automatic IP address assignment

• SNMP is used for network management

• Telnet is used for remote access to servers

Master theorem and big O notation are used to analyze the time complexity of algorithms.

• Master theorem is used to solve recurrence relations that arise in the analysis of algorithms.

• Big O notation is used to describe the upper bound of the growth rate of an algorithm's time complexity.

• Master theorem can be used to solve the time complexity of divide and conquer algorithms like merge sort and quicksort.

• Big O notation is commonly used to compare the efficiency of different algo...read more

Binary tree is a tree data structure where each node has at most two children. AVL tree is a self-balancing binary search tree.

• Binary tree can be unbalanced, while AVL tree maintains balance.

• AVL tree has a height difference of at most 1 between left and right subtrees.

• Insertion and deletion operations are faster in binary tree, but searching is faster in AVL tree.

• Example of binary tree: a family tree. Example of AVL tree: a dictionary.

• AVL tree is named after its inventors Ade...read more

Colligative properties are properties of solutions that depend on the concentration of solute particles but not their identity.

• Molarity is the number of moles of solute per liter of solution.

• Normality is the number of equivalents of solute per liter of solution.

• Molality is the number of moles of solute per kilogram of solvent.

• Proteins can have primary, secondary, tertiary, and quaternary structures.

Transpiration is the loss of water from the aerial parts of the plant, while guttation is the exudation of water from the tips of the leaves.

• Transpiration occurs through stomata, while guttation occurs through hydathodes.

• Transpiration occurs during the day, while guttation occurs at night.

• Transpiration is a passive process, while guttation is an active process.

• Transpiration helps in the absorption of minerals, while guttation helps in the removal of excess water.

• Examples of p...read more

Blood agar is a type of growth medium used to culture bacteria that require specific nutrients found in blood.

• Blood agar contains blood, usually from sheep or horses, and a nutrient-rich agar base.

• It is used to differentiate bacteria based on their ability to hemolyze (break down) red blood cells.

• Examples include alpha-hemolytic Streptococcus pneumoniae, beta-hemolytic Streptococcus pyogenes, and gamma-hemolytic Enterococcus faecalis.

• Blood agar is commonly used in clinical mi...read more

Prokaryotes are single-celled organisms without a nucleus, while eukaryotes are organisms with cells that have a nucleus.

• Prokaryotes lack membrane-bound organelles, while eukaryotes have them.

• Prokaryotes include bacteria and archaea, while eukaryotes include plants, animals, fungi, and protists.

• Prokaryotes have circular DNA, while eukaryotes have linear DNA.

• Prokaryotes reproduce asexually, while eukaryotes can reproduce both sexually and asexually.

Communications skills can be quickly learned through practice, feedback, and observation.

• Practice speaking and listening in various situations

• Seek feedback from others and be open to constructive criticism

• Observe effective communicators and learn from their techniques

• Read books and articles on communication skills

• Attend workshops or courses on communication

• Use technology to improve communication skills, such as recording and analyzing your own conversations

• Be aware of nonverb...read more

Capital budgeting techniques involve evaluating and selecting investment projects based on their potential returns and risks.

• Payback period: Measures the time required to recover the initial investment.

• Net Present Value (NPV): Calculates the present value of cash flows and compares it to the initial investment.

• Internal Rate of Return (IRR): Determines the discount rate that makes the NPV zero.

• Profitability Index (PI): Measures the ratio of present value of cash inflows to the...read more

It is not practical or desirable to have one language throughout the world.

• Language is closely tied to culture and identity.

• Diversity in language allows for a diversity of thought and expression.

• Language is constantly evolving and adapting to new contexts and needs.

• English is currently the most widely spoken language for international communication.

• Language learning and multilingualism should be encouraged and valued.

Heteronyms are words that are spelled the same but have different meanings and pronunciations.

• Heteronyms are a type of homograph, where the spelling is the same but the pronunciation and meaning differ.

• Examples include 'tear' (a drop of water from the eye) and 'tear' (to rip something).

• Another example is 'lead' (to guide) and 'lead' (a metal).