Cloud Computing
Which of the following is NOT the business driver of Cloud Computing?
Ease of use
Capacity planning
Cost reduction
Organisational agility
Which of the following are the pre-existing technologies that heavily impacted on Cloud Computing?
Clustering, Big Data, Artificial Intelligence
Database, Grid Computing, Docker
Clustering, Grid Computing, Virtualisation
Artificial Intelligence, Big Data, 5G technology
What is the difference between Cloud and Internet?
Cloud has a clear and finite boundary.
Cloud is usually private and offers metered IT resources, while the Internet provides open access to many Web-based IT resources.
Cloud often provides back-end processing capabilities and user-based access to these capabilities, while the Internet is dedicated to the access of content-based IT resources published via the World Wide Web.
All of the above.
What are the cloud delivery models for Virtual Machine and Google App Engine, respectively?
SaaS and PaaS
IaaS and PaaS
IaaS and SaaS
None of the above
What computing resources do cloud users need to manage in Platform-as-a-service?
Networking and storage
Operation system
Application and data
None of the above
Given two servers A and B, which of the following Load Balancing algorithms should be considered if A has more CPU cores than B?
Round Robin
Weighted Round Robin
Least Connections
Random
Which of the following statements about load balancer is correct?
To determine the destination, the layer 4 load balancer considers the IP address and ports, as well as the contents in the package.
The layer 7 load balancer cannot direct Internet traffic based on the contents in the packet.
The layer 4 load balancer has faster data transferring performance than the layer 7 load balancer in terms of latency.
None of the above.
What are the features of docker?
Easy modelling
Version Control
Application Isolation
All of the above
Which of the following tools can help you manage multiple containers on one single machine?
Dockerfile
Docker-compose
Docker machine
None of the above
Which of the following tools can help you install Docker Engine on multiple virtual hosts?
Dockerfile
Docker-compose
Docker machine
Docker-swarm and Kubernetes
Which of the following statements about dockerfile is correct?
Dockerfile is a text file that defines the environment inside the container.
Dockerfile is a collection of instructions and commands.
Dockerfile is transparent to users as it tells what is contained in the image.
All of the above.
Deployments in Kubernetes use _______ to provide self-healing and scaling.
ReplicaSets
Pods
Services
Controller
Which of the following statement is WRONG?
NoSQL databases require that schemas be defined before you can add data.
NoSQL databases are built to allow the insertion of data without a predefined schema.
Transaction properties (ACID) in the traditional relational databases are not suitable to be a set of properties to describe NoSQL databases.
All of the above.
According to the CAP (Consistency, Availability, and Partition Tolerance) Theorem, which one of the following options is NOT possible to be satisfied for a NoSQL database?
CA
AP
CP
CAP
Which of the following statement is correct about HDFS?
HDFS needs to run on expensive commodity hardware and cannot deal with failures.
HDFS is to handle large files and the block size is 128 MB by default.
HDFS supports multi-users to write one file simultaneously.
In HDFS, low latency is more important than high-sustained bandwidth.
In Spark programming, the default storage level of cache() is _________
MEMORY_ONLY
MEMORY_AND_DISK
DISK_ONLY
MEMORY_ONLY_SER
Which of the following operations is NOT a transformation in Spark?
Flatmap
Filter
Reduce
reduceByKey
Which of the following is true for RDD?
We can operate Spark RDDs in parallel with a low-level API.
RDDs are similar to the table in a relational database.
It allows the processing of a large amount of structured data.
It has a built-in optimization engine.
Which of the following is the fundamental data structure of Spark?
RDD
DataFrame
Dataset
None of the above
Which of the following is NOT regarded as an IT resource in Cloud Computing?
Virtual machines on physical servers
Software program
Storage services (e.g. Dropbox/OneDrive/iCloud)
Portable USB Flash Drives
What is a public cloud?
A publicly accessible and metered cloud environment owned by a third-party cloud provider.
A computing service that can only be accessed from a publicly shared computer.
A publically accessible computing environment free of charge.
The cloud infrastructure that is provisioned for exclusive use by a single organization comprising multiple consumers (e.g., business units)
Which of the following software does allow you to run multiple virtual machines on one physical server machine?
Host operation system
Guest operating system
Virtual machine management or hypervisor
None of the above
Which of the following statements about Virtual Private Cloud (VPC) is NOT correct?
A virtual private cloud (VPC) is a virtualized private cloud within a public cloud (GCP, AWS) for an organization.
To access a VPC network, Virtual Private Network can be used to build an encrypted tunnel between on-premises IT resources and the VPC.
VPC is a global resource in GCP, while VPC is a regional one in AWS.
Every user can access an established VPC without authentication.
Which of the following statements about the VPC's rewall is NOT correct?
In GCP, VPC routes dene paths for packets leaving instances to a destination.
Firewall rules apply to both outgoing (egress) and incoming (ingress) tra c in the network.
In GCP, every default VPC network has implied rewall rules and you could delete them.
None of the above.
A docker registry is a stateless, highly scalable server side application that stores and distributes _________
Docker images
Docker commands
Docker files
All of the above
Which of the following docker command is to delete an existing image?
Docker rmi
Docker kill
Docker rm
Docker pause
Which of the following commands can be used to replace docker-compose up?
Docker-compose build and docker-compose run
Docker-compose build and docker-compose start
Docker-compose start and docker-compose run
None of the above
Decoupling MySQL, Redis, Nginx, and PHP services into multiple containers makes it easier to scale horizontally and reuse the containers.
True
False
Which of the following commands can be used to scale down a service running with 6 containers to 3 containers?
Docker service scale down 3
Docker services scale=3
Docker service scale =3
None of the above
Which of the following must all the communications between components go through?
Etcd
The controller manager
The API server
The scheduler
________ stores are used to store information about networks, such as social connections.
Key-value
Wide-column
Document
Graph
Which of the following belongs to Cluster File System?
Sun Network File System (NFS)
Hadoop Distributed File System (HDFS)
Common Internet File System (CIFS)
Google's Bigtable
Which of the following is NOT a feature of Spark?
Supports in-memory computation
Fault-tolerance
It does not support interactive process.
Compatible with other le storage system
Which of the following is true for Spark SQL?
It is the kernel of Spark.
Provides an execution platform for all the Spark applications
It enables users to run SQL / HQL queries on the top of Spark.
Enables powerful interactive and data analytics application across live streaming data
What are the advantages of 3x replication schema in Hadoop?
Fault tolerance
High availability
Reliability
All of the above
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