WorksheetsQuiz on Distributed System Models
Total questions: 30
Worksheet time: 15mins
What are the three ways in which distributed system design can be effectively communicated?
Abstract Models, Concrete Models, Hybrid Models
Hardware Models, Software Models, Network Models
Physical Models, Architectural Models, Fundamental Models
Logical Models, Architectural Models, Middleware Solutions
What do physical models of distributed systems capture?
Middleware solutions and architectural patterns
Computational elements and communication tasks
Hardware composition and interconnecting networks
Abstract perspective of a distributed system
Which generation of distributed systems emerged in the 1990s with an extensible set of nodes interconnected by a network of networks?
Internet scale distributed systems
Early distributed systems
Contemporary distributed systems
Future distributed systems
What is the purpose of architectural models in distributed systems?
To define the physical infrastructure of the system
To lay a foundation for understanding different architectural models
To provide security to the distributed system
To manage the middleware solutions
What is the role of threads in a distributed system from a system-oriented perspective?
Threads are individual machines or devices in a distributed system
Threads are smaller units of a process that can be executed concurrently within the same process
Threads are instances of a program that is being executed
Threads are endpoints of communication
What is the key technique of indirect communication in distributed systems?
Message passing primitives
Socket programming
Remote Procedure Call
Group communication
Which architectural style describes a distributed system where all processes play similar roles and interact cooperatively as peers?
Client-Server architecture
Brokerage pattern
Peer-to-Peer architecture
Layered architecture
What is the purpose of the Layering architectural pattern in distributed systems?
To provide recurring structures that work well in certain circumstances
To provide a convenient programming model to application programmers
To organize functionality in a given layer and place it onto appropriate servers
To partition a complex system into layers of abstraction
What is the primary technique used for securing communication channels in distributed systems?
Reflection pattern
Authentication
Cryptography
Shared secrets
What is the main threat to processes in distributed systems related to message sources?
Lack of reliable knowledge of the source of a message
Arbitrary failures of processes
Omission failures of processes
Timing failures of processes
Which type of failure in distributed systems occurs when a process halts and remains halted?
Timing failure
Crash failure
Omission failure
Arbitrary failure
What is the main purpose of fundamental models in distributed systems?
To provide a convenient programming model
To make explicit all relevant assumptions about the systems being modeled
To secure the processes and communication channels
To organize functionality in a given layer
What is the key characteristic of synchronous distributed systems?
Processes rely on asynchronous communication
Processes have known lower and upper bounds on execution time
Processes make arbitrary decisions
Processes have no bounds on execution time
Which type of failure in distributed systems occurs when a message inserted in an outgoing message buffer never arrives at the receiver's incoming message buffer?
Crash failure
Omission failure
Timing failure
Arbitrary failure
What is the primary technique used for securing channels in distributed systems based on authentication and encryption?
Shared secrets
Cryptography
Authentication
Reflection pattern
What is the significance of reflection pattern in securing communication channels in distributed systems?
To provide a convenient programming model
To authenticate the communication
To encrypt the communication
To manage the middleware solutions
How do fundamental models contribute to the security of distributed systems?
By defining the physical infrastructure
By organizing functionality in a given layer
By making explicit all relevant assumptions
By providing a convenient programming model
What role do architectural models play in ensuring the scalability of distributed systems?
To define the physical infrastructure of the system
To lay a foundation for understanding different architectural models
To provide security to the distributed system
To manage the middleware solutions
What is the primary purpose of architectural models in distributed systems?
To define the physical infrastructure of the system
To lay a foundation for understanding different architectural models
To provide security to the distributed system
To manage the middleware solutions
What is the key characteristic of asynchronous distributed systems?
Processes rely on synchronous communication
Processes have known lower and upper bounds on execution time
Processes make arbitrary decisions
Processes have no bounds on execution time
How do architectural models contribute to the scalability of distributed systems?
By defining the physical infrastructure of the system
By organizing functionality in a given layer and placing it onto appropriate servers
By providing security to the distributed system
By managing the middleware solutions
What is the primary characteristic of a synchronous distributed system?
Processes rely on asynchronous communication
Processes have known lower and upper bounds on execution time
Processes make arbitrary decisions
Processes have no bounds on execution time
What is the main concern related to message sources in distributed systems?
Lack of reliable knowledge of the source of a message
Arbitrary failures of processes
Omission failures of processes
Timing failures of processes
What is the key feature of asynchronous distributed systems?
Processes rely on synchronous communication
Processes have known lower and upper bounds on execution time
Processes make arbitrary decisions
Processes have no bounds on execution time
What is the primary characteristic of an asynchronous distributed system?
Processes rely on synchronous communication
Processes have known lower and upper bounds on execution time
Processes make arbitrary decisions
Processes have no bounds on execution time
How do architectural models contribute to the fault tolerance of distributed systems?
By defining the physical infrastructure of the system
By organizing functionality in a given layer and placing it onto appropriate servers
By providing security to the distributed system
By managing the middleware solutions
What is the primary purpose of middleware solutions in distributed systems?
To define the physical infrastructure of the system
To lay a foundation for understanding different architectural models
To provide security to the distributed system
To manage communication between different components
What is the primary purpose of the Brokerage pattern in distributed systems?
To provide a convenient programming model to application programmers
To organize functionality in a given layer and place it onto appropriate servers
To enable processes to play similar roles and interact cooperatively as peers
To partition a complex system into layers of abstraction
What is the key characteristic of physical models in distributed systems?
Middleware solutions and architectural patterns
Computational elements and communication tasks
Hardware composition and interconnecting networks
Abstract perspective of a distributed system
How do architectural models contribute to the reliability of distributed systems?
By defining the physical infrastructure of the system
By organizing functionality in a given layer and placing it onto appropriate servers
By providing security to the distributed system
By managing the middleware solutions
