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Question 1 of 60 Quiz ID: 1

What is the primary purpose of the Physical Layer in the OSI model?

To provide error-free transmission across a single link

To accept a raw string of bits and deliver it across a link

To deliver packets from sender to receiver across a network

To provide end-to-end delivery between hosts

Question 2 of 60 Quiz ID: 2

Which OSI layer is responsible for logical addressing and path determination?

Data Link Layer

Network Layer

Transport Layer

Session Layer

Question 3 of 60 Quiz ID: 3

What is a key function of the Data Link Layer?

Logical Addressing

Routing

Data Framing

Encryption

Question 4 of 60 Quiz ID: 4

Which layer of the OSI model provides end-to-end delivery and reliability?

Network Layer

Transport Layer

Session Layer

Application Layer

Question 5 of 60 Quiz ID: 5

What is the main purpose of the Session Layer?

To format data for transmission

To control the dialog between two end-user applications

To provide physical addressing

To handle error detection and correction

Question 6 of 60 Quiz ID: 6

Which layer is responsible for translation, compression, and encryption?

Presentation Layer

Application Layer

Session Layer

Transport Layer

Question 7 of 60 Quiz ID: 7

What type of communication involves real-time interaction?

One-way

Interactive-Non real time

Interactive-Real time

Two-party

Question 8 of 60 Quiz ID: 8

What does PSTN stand for?

Public Switched Telephone Network

Private System Telephone Network

Public System Telecommunication Network

Private Switched Telecommunication Node

Question 9 of 60 Quiz ID: 9

Which of the following is a fundamental component of a network?

Terminals for Access

Operating Systems

Application Software

User Interfaces

Question 10 of 60 Quiz ID: 10

What is a major challenge in networking that layering helps to address?

Different architecture

Uniform data formats

Same communication rates

Identical languages

Question 11 of 60 Quiz ID: 11

What is the primary benefit of a layered architecture in networking?

Faster data transmission

Transparent implementation and independent design

Reduced hardware costs

Simpler user interfaces

Question 12 of 60 Quiz ID: 12

How many layers are there in the OSI model?

Question 13 of 60 Quiz ID: 13

Which OSI layer is responsible for physical addressing (e.g., MAC addresses)?

Network Layer

Data Link Layer

Physical Layer

Transport Layer

Question 14 of 60 Quiz ID: 14

What is the main function of the Application Layer?

Data encryption

Providing network-based applications to users

Error detection

Flow control

Question 15 of 60 Quiz ID: 15

Which layer shields higher layers from the details of how packets are routed through the network?

Data Link Layer

Network Layer

Transport Layer

Session Layer

Question 16 of 60 Quiz ID: 16

What does the Transport layer handle?

Logical addressing

Physical transmission

End-to-end delivery and reliability

Data formatting

Question 17 of 60 Quiz ID: 17

Which layer is often not implemented as a separate, distinct layer in real systems?

Session Layer

Transport Layer

Network Layer

Physical Layer

Question 18 of 60 Quiz ID: 18

What is a key function of the Presentation Layer?

Routing

Data Representation and Encryption

Flow Control

Token Management

Question 19 of 60 Quiz ID: 19

In the OSI model, what is the data unit at the Network Layer?

Bits

Frames

Packets

Segments

Question 20 of 60 Quiz ID: 20

What is the data unit at the Physical Layer?

Bits

Frames

Packets

Segments

Question 21 of 60 Quiz ID: 21

Which layer manages dialog control such as full vs half duplex?

Session Layer

Presentation Layer

Application Layer

Transport Layer

Question 22 of 60 Quiz ID: 22

What does the Data Link Layer use for addressing?

Logical addressing (IP)

Hardware level addressing (MAC)

Port addressing

Application addressing

Question 23 of 60 Quiz ID: 23

Which layer is responsible for managing congestion in the network core?

Data Link Layer

Network Layer

Transport Layer

Application Layer

Question 24 of 60 Quiz ID: 24

What is a primary function of the Transport Layer?

Data framing

Multiplexing and demultiplexing

Encryption

Token management

Question 25 of 60 Quiz ID: 25

Which OSI layers are primarily responsible for quality of service (QoS) guarantees?

Data Link and Network Layers

Network and Transport Layers

Transport and Session Layers

Session and Presentation Layers

Question 26 of 60 Quiz ID: 26

What is the stated scope of CS2033 regarding the OSI model?

Covers all layers in depth

Focuses on Application and Presentation Layers

Physical Layer in depth, touches Data Link, briefly introduces Network and Application

Only covers Physical and Data Link Layers

Question 27 of 60 Quiz ID: 27

Which layer provides services like file transfer and electronic mail directly to the user?

Application Layer

Presentation Layer

Session Layer

Transport Layer

Question 28 of 60 Quiz ID: 28

What type of network is a LAN?

Local Area Networks

Long Area Networks

Logical Access Networks

Linked Application Nodes

Question 29 of 60 Quiz ID: 29

What is a key advantage of a layered network architecture?

Reduced need for hardware

Faster processing speed

Flexible to modify and independent testing

Simpler user authentication

Question 30 of 60 Quiz ID: 30

Which layer is responsible for defining the electrical, mechanical, and procedural characteristics for activating and maintaining a physical link?

Physical Layer

Data Link Layer

Network Layer

Transport Layer

Question 31 of 60 Quiz ID: 31

What does OSI stand for?

Open System Interconnect

Operational Signal Interface

Open Signal Interchange

Operational System Integration

Question 32 of 60 Quiz ID: 32

Which layer handles error detection and correction for transmission across a single communication link?

Physical Layer

Data Link Layer

Network Layer

Transport Layer

Question 33 of 60 Quiz ID: 33

What is the role of the Network Layer in addressing?

Hardware addressing for a local link

Logical addressing for internetwork communication

Port addressing for applications

No addressing role

Question 34 of 60 Quiz ID: 34

Which layer manages the establishment, management, and termination of connections between applications?

Network Layer

Transport Layer

Session Layer

Presentation Layer

Question 35 of 60 Quiz ID: 35

According to the slides, where are Presentation Layer functions often implemented in practice?

In a separate, distinct layer

Within the Application Layer

Within the Transport Layer

Within the Network Layer

Question 36 of 60 Quiz ID: 36

What is the data unit at the Transport Layer?

Bits

Frames

Packets

Segments

Question 37 of 60 Quiz ID: 37

Which layer would be responsible for defining the timing and sequencing of bits on the wire?

Physical Layer

Data Link Layer

Network Layer

Session Layer

Question 38 of 60 Quiz ID: 38

Which challenge of networking is directly addressed by the concept of standardization?

Different architecture

Different languages

Different data formats

Different communication rates

Question 39 of 60 Quiz ID: 39

In the OSI communication diagram, what is the role of routers?

Operate at the Physical and Data Link layers

Operate at the Network layer

Operate at the Transport layer

Operate at all layers

Question 40 of 60 Quiz ID: 40

What is the primary purpose of flow control at the Data Link Layer?

To prevent a fast sender from overwhelming a slow receiver on a single link

To find the best path through a network

To encrypt data for security

To translate application data

Question 41 of 60 Quiz ID: 41

Which of these is NOT a typical function of the Physical Layer?

Encoding and signaling

Data transmission and reception

Topology and physical network design

Error detection and handling

Question 42 of 60 Quiz ID: 42

The Internet is an example of which type of network?

PSTN

LAN

Television Network

Internet (a global WAN)

Question 43 of 60 Quiz ID: 43

What is the fundamental purpose of communication as defined in the lecture?

Sharing computational resources

Sending information from one place to another

Managing network security

Standardizing data formats

Question 44 of 60 Quiz ID: 44

Which layer's functionality includes 'Interhost Communication'?

Application Layer

Presentation Layer

Session Layer

Transport Layer

Question 45 of 60 Quiz ID: 45

Multiplexing at the Transport Layer allows for:

Multiple paths for a single packet

Multiple applications to share a single network connection

Multiple frames to be combined into a packet

Multiple bits to form a byte

Question 46 of 60 Quiz ID: 46

Which OSI layer is most concerned with the mechanical characteristics of interfaces and transmission media?

Physical

Data Link

Network

Transport

Question 47 of 60 Quiz ID: 47

The concept of 'Media for Transmission' is a component of a network most directly associated with which OSI layer?

Application Layer

Network Layer

Data Link Layer

Physical Layer

Question 48 of 60 Quiz ID: 48

In the context of the OSI model, what does 'transparent implementation' mean?

The media is see-through

The implementation details of a layer are hidden from other layers

Data is not encrypted

Signals can pass through obstacles

Question 49 of 60 Quiz ID: 49

Which layer ensures that a receiver is not overwhelmed by data by regulating the amount of data sent?

Network Layer (Congestion Control)

Transport Layer (Flow Control)

Data Link Layer (Flow Control)

Both Transport and Data Link Layers

Question 50 of 60 Quiz ID: 50

What is the primary distinction between the Network Layer and the Transport Layer?

Network Layer deals with logical addressing, Transport deals with physical addressing

Network Layer provides host-to-host delivery, Transport provides process-to-process delivery

Network Layer provides reliability, Transport provides routing

Network Layer is implemented in software, Transport in hardware

Question 51 of 60 Quiz ID: 51

Which problem is solved by the layered approach to network design?

The high cost of network hardware

The complexity of designing a monolithic communication system

The limited speed of physical transmission media

The need for user training

Question 52 of 60 Quiz ID: 52

The function 'Datagram encapsulation' is performed at which layer?

Physical Layer

Data Link Layer

Network Layer

Transport Layer

Question 53 of 60 Quiz ID: 53

Which of these is a function listed for the Network Layer?

Token Management

Synchronization

Quality of Service

Compression

Question 54 of 60 Quiz ID: 54

Equipment for Switching is a network component that operates primarily at which OSI layer?

Physical Layer

Data Link Layer (Switches)

Network Layer (Routers)

All of the above

Question 55 of 60 Quiz ID: 55

The direction of information flow (e.g., one-way, interactive) is a characteristic managed at which layer?

Physical Layer (Simplex/Duplex)

Session Layer (Dialog Control)

Application Layer

Both Physical and Session Layers

Question 56 of 60 Quiz ID: 56

What is the core idea behind 'Open System Interconnect (OSI)'?

Using open-source software for networking

Communication regardless of underlying architecture

Connecting systems without wires

Making all network specifications public

Question 57 of 60 Quiz ID: 57

Which layer would be responsible for ensuring a file is converted from EBCDIC to ASCII encoding?

Application Layer

Presentation Layer

Session Layer

Transport Layer

Question 58 of 60 Quiz ID: 58

The concept of a 'well defined function' for each layer helps to achieve which goal?

Increased transmission speed

Modularization and clear boundaries

Reduced number of layers

Simpler hardware

Question 59 of 60 Quiz ID: 59

In the OSI model encapsulation process, what is the PDU for the Data Link layer?

Bit

Frame

Packet

Segment

Question 60 of 60 Quiz ID: 60

Why is the OSI model described as a reference model rather than an implementation blueprint?

It is too complex to ever implement

It is a theoretical guide for understanding functions, not a strict protocol stack

It has been replaced entirely by the TCP/IP model

It only applies to telephone networks

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