Free Networking and Internet MCQs with Answers
452 Networking and Internet MCQs from Computer Science and IT, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Networking covers LAN, MAN, WAN and wireless networks, network topologies, transmission media, devices such as switches, routers and modems, and the OSI and TCP/IP models. Internet concepts include IP addresses, DNS, URLs, web browsers, email, protocols such as HTTP, HTTPS, FTP and SMTP, and basic network security.
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452 questions · page 17 of 23
- A. Serial
- B. Baseband
- C. Broadband
- D. Distortion
Explanation: The answer is (b) Baseband. Baseband signals are analog signals that represent information by continuously changing some property of the…
Correct answer: Baseband- A. GPRS (General Packet Radio Service)
- B. TDMA (Time Division Multiple Access)
- C. FDMA (Frequency Division Multiple Access)
- D. All of these
Explanation: The answer is (d) All of these.Here's why all the options are valid answers:GPRS: While GPRS is an older technology, it is still used in…
Correct answer: All of these- A. Low frequencies
- B. High frequencies
Explanation: Coaxial cable has several advantages over twisted-pair cable, but one of the most significant is its ability to operate at higher…
Correct answer: High frequencies- A. 4-20
- B. 4-21
- C. Both a, b
- D. 4-23
Explanation: Coaxial cable has several advantages over twisted-pair cable, but one of the most significant is its ability to operate at higher…
Correct answer: Both a, b- A. Bounded/Un bounded
- B. Guided/Unguided
- C. Both a, b
- D. None of these
Explanation: he answer is (c) Both a, b.Communication channels can be classified into two main types based on the physical medium used to transmit the…
Correct answer: Both a, b- A. Higher bandwidth
- B. Lower signal loss
- C. Immunity to electromagnetic interference (EMI)
- D. All of the above
Explanation: The answer is (d) All of the above.Fiber optic media offers several advantages over traditional metallic cable media:Higher bandwidth…
Correct answer: All of the above- A. One-to-one
- B. One-to-many
- C. Many-to-many
- D. All of the above
Explanation: In a relational database, tables can be related to each other in three main ways: One-to-one relationship, One-to-many relationship, and…
Correct answer: All of the above- A. One-to-one
- B. Modality
- C. Both A and B
- D. All of the above
Explanation: A one-to-one relationship is a type of relationship between two entities where one entity is associated with exactly one other entity, and…
Correct answer: One-to-one- A. Student-Regno
- B. Person-Automobile
- C. Mother-daughter
- D. Person-phone number
Explanation: A one-to-one relationship exists between two tables when one record in the first table corresponds to exactly one record in the second…
Correct answer: Person-phone number- A. Student-Regno
- B. Person - NADRA Smart card
- C. Mother-daughter
- D. Both A and B
Explanation: A one-to-many relationship exists when a single record in one table (the "one" side) can be related to multiple records in another table…
Correct answer: Mother-daughter- A. One-to-one
- B. One-to-many
- C. Many-to-many
- D. Both A and C
Explanation: A one-to-many relationship is a type of relationship between two entities where one entity (county) can be associated with multiple…
Correct answer: One-to-many- A. Foreign key
- B. Composite key
- C. Secondary key
- D. Primary key
Explanation: In the Entity-Relationship (ER) model, an entity type represents a class of real-world objects (e.g., customer, product, order).
Correct answer: Primary key- A. Attributes
- B. Entities
- C. Relationships
- D. Descriptions
Explanation: In a database, an entity refers to a real-world object or concept that we want to store information about.
Correct answer: Attributes- A. Entity
- B. Record
- C. Identifier
- D. Attribute
Explanation: In an entity-relationship (E-R) diagram, an oval represents an entity set.
Correct answer: Entity- A. Simplicity
- B. Extra space and update time
- C. Both A and B
- D. Complexity
Explanation: Partitioning a disk drive or database involves dividing it into smaller, more manageable sections.
Correct answer: Extra space and update time- A. Entity
- B. Attribute
- C. Identifier
- D. Relationship
Explanation: In a relational database, entities are represented by tables. A relationship describes the connection between these tables.
Correct answer: Relationship- A. Entity
- B. Attribute
- C. Record
- D. Relationship
Explanation: In an entity-relationship (E-R) diagram, a rectangle represents an entity set.
Correct answer: Entity- A. Fast Data Retrieval
- B. Security
- C. Efficient Storage
- D. All of the above
Explanation: An effective file organization system should consider all of the above factors.
Correct answer: All of the above- A. Entities/Objects
- B. Attributes
- C. Relationship
- D. All of the above
Explanation: Data modeling is the process of creating a blueprint for a database. The ingredients or components of data modeling…
Correct answer: All of the above- A. 2
- B. 3
- C. 4
- D. 5
Explanation: Conceptual database design is the initial phase of database design where the focus is on understanding the data requirements of the…
Correct answer: 3