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2900172
CSSE4004 Lecture 1
Descripción
To provide network reliability
Sin etiquetas
distributed systems
uq
csse4004
csse4004
Test por
tb22
, actualizado hace más de 1 año
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Resumen del Recurso
Pregunta 1
Pregunta
Which of these is not a form of transparency?
Respuesta
Retry
Relocation
Concurrency
Access
Pregunta 2
Pregunta
Which of these is not a form of transparency?
Respuesta
Access control
Location
Replication
Failure
Pregunta 3
Pregunta
Which of these is a situation when Decentralized algorithms should be used?
Respuesta
Failure of one machine does not ruin the algorithm
Every machine has complete information about the system state
Machines make decisions based only on global information
There is a global clock
Pregunta 4
Pregunta
Which scaling technique does "Split and spread functionality across the system" describe
Respuesta
Distribution
Decentralised algorithms
Concurrency
Heterogeneity
Pregunta 5
Pregunta
What are the dimensions of scalability?
Respuesta
Size, Geographically, Administrativley
Size, Geographically
Users, Resources
CPU, RAM, number of nodes
Pregunta 6
Pregunta
What does ACID stand for?
Respuesta
Atomicity, Consistency, Isolation, Durability
Atomicity, Correctness, Isolation, Durability
Atomicity, Consistency, Independence, Durability
Atomicity, Consistency, Isolation, Dependability
Pregunta 7
Pregunta
Which of these achieves hiding communication latencies?
Respuesta
Asynchronous communication
Caching
Multicast
Dual network interface
Pregunta 8
Pregunta
What is the goal of middleware?
Respuesta
Provide distribution transparency
Offer local services to remote clients
Hide differences between different systems
To provide network reliability
Pregunta 9
Pregunta
What are Hiding communication latencies, Distribution and Replication?
Respuesta
Scaling techniques
Middleware features
Reliability methods
The difference between a NOS and DOS
Pregunta 10
Pregunta
When latency is a problem, which technique should be used if asynchronous communication cannot be used?
Respuesta
Communication should be reduced
Compression should be used
You should make multiple concurrent requests while the user is waiting
You should upgrade the connection capabilities, eg. to get a gigabit connection
Pregunta 11
Pregunta
What are the properties of openness?
Respuesta
Interoperability, Portability, Heterogeneity
Cross-platform, XML, Dynamic Invocation
Interoperability, Dynamic, Heterogeneity
Heterogeneity, Standardization, Interoperability
Pregunta 12
Pregunta
Which of these are all forms of transparency?
Respuesta
Access, Location, Concurrency
Relocation, Replication, Caching
Mitigation, Replication, Failure
Access, Connectivity, Migration
Pregunta 13
Pregunta
What type of transparency is "Hide that a resource may move to another location"
Respuesta
Migration
Location
Relocation
Transferral
Pregunta 14
Pregunta
Which of these is NOT a false assumption often made by first time distributed systems developers?
Respuesta
All systems have the same software
Bandwidth is infinite
The network is secure
There is one administrator
The topology does not change
The network is homogeneous
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