WorksheetsIct сессия
Total questions: 38
Worksheet time: 28mins
Relationship between tables:
One - to - one
More - to - one
One - to - many
Many - to - many
Quality control includes (Analysis and data management):
Preventing and detecting errors in data through written procedures, training, verification procedures, and avoidance of undue complexity
Assessing the quality of the data through notes kept by interviewers, coders, and data editors, through debriefing of subjects
Avoiding or eliminating inconsistencies, errors, and missing data through review of data collection forms and datasets
Avoiding or eliminating inconsistencies, errors, and missing data through review of texteditor forms and datasets
Security concerns include:
protection from external and internal sources
Legal
data translation for subsamples
safety of the information
Examples of end network devices include:
Computers,laptops, file servers, web servers
Security cameras
Network printers
router
An intermediary devices include:
Switches and wireless access points
Routers and modems
Firewalls
Network printers
An intermediary devices include:
Switches and wireless access points
Routers and modems
file servers, web servers
Firewalls
What is a hub?
It’s the central controlling device
A device used to extend a network so that additional workstations can be attached
This device typically provides from 4 to 24connections
a PC or a workstation on a network using services provided from the network file server
Specify main features of network bridges?
connects multiple network segments at the data link layer (layer 2) of the OSI model
a PC or a workstation on a network using services provided from the network file server
do not promiscuously copy traffic to all ports
do send broadcasts to all ports except the one on which the broadcast was received
Computer networks can be classified by considering following different aspects as the basis
thescale
the functional relationship (Network Architectures)
the connectionmethod
The usage technologies
Network topology
star
square
bus
ring
Information security is the practice of defending information from unauthorized access, …
use
disclosure
detect
modification
The purpose of the data management system is to ensure:
high quality data
lower quality data
to ensure that the variability in the data derives from the phenomena under study and not from the data collection process
accurate, appropriate, and indefensible analysis and interpretation of the data
accurate, appropriate, and defensible analysis and interpretation of the data
This triad is a well-known model for cybersecurity development:
Confidentiality
Necessity
Availability
Integrity
Diligence
Possible attacks that may arise with your computer if not proper security measures taken
keeps your passwords
Record keystrokes and steal passwords.
Harvest and sell email addresses and passwords.
Send spam and phishing emails.
to prevent being attacked
Big data expanding on 3 fronts at an increasing rate:
Data volume
Data feeling
Data velocity
Data accuracy
Data variety
Types of problems associated with Big Data:
Storage and Management.
No problem
Unstructured Information
Analysis of Big Data.
Data transfer from one point to another
Big data is an evolving term that describes any voluminous amount of …, … and …data that has the potential to be mined for information.
structured
semistructured
multistructured
unstructured
undefined
Types of unstructured data
Survey responses
All parts of computer hardware
transcripts of call center interactions
posts from blogs and social media sites
The programming Language System
The data that users access and utilise can be split into parts:
DataExtraction
Data performance
Data searching
Data Storage
Data Cleaning
E-business processes include:
buying and selling products, supplies and services
moving around the screen
servicing customers
allows to the user to interact directly with the computer system
processing payments
E-business processes contain services as follows:
managing production control;
Selecting necessary things
collaborating with business partners; sharing information;
running automated employee services; recruiting;
allows to the user to interact directly with the computer system
Types of Electronic Business Models
B2B
B2C
S2B
B2F
C2C
Many of Business models operate under the basic categories of
manufacturer
distributor
marketing
retail or franchise
administrator
E-commerce defines interaction between organizations and their …
customers
clients
constituents
Best buyer
administrator
E-learning is
a value addedservice which contributes a lot to the education
described the buying and selling of products, services, and information via computer networks including the internet
follow the retail outlet business model
paved a path to an easier way of teaching and learning
described as any form of technology enhanced learning mechanism
The purpose of the professional communication falls into of these categories:
inform
persuade
Make a request
feedback
copy
The communication process’s elements are
receiver
translation
copy
feedback
persuade
Communication process’s elements include
sender
copy
message
channel
persuade
A domain name is
your website name
substituted for an important sub page
additional information about each of the sections of the http URL for this page
used for finding and identifying computers on the Internet
the address where Internet users can access your website
Define the core components of a data centre
Platform infrastructure
Computing resources
Storage infrastructure
Database infrastructure
Network infrastructure
Cloud computing is the delivery of computing services such as servers, storage, databases, … , …, … and more—over the Internet
networking
hardware
Search engines
analytics
software
What do you do with the cloud?
Create new apps and services
Delete, back and covering data
Host websites and blogs
Store, back up and recover data
Defragmenting discs
Cloud should solve a number of basic tasks
Stream audio and video
Delete, back and covering data
Deliver software on deman
Manage all software
Analyse data for patterns and make predictions
Most cloud computing services fall into … broad categories:
infrastructure as a service (IaaS)
Hardware as a service (HaaS)
platform as a service (PaaS)
software as a service (Saas).
Programming as a service (PaaS)
Types of cloud deployments:
hybrid
miss hybrid
public
private
inprivate
The Basic Elements of Multimedia
Text
Social nets
Graphics, Animation, Video
Audio
networks
Hypertext
was invented by Ted Nelson around 1965
was invented by Bill Gates around 1965
means a database in which information (text) has been organized nonlinearly
is a text which contains links to other texts
means a database in which information (text) has been organized linearly
Important questions in designing the hypermedia are:
Converting linear text to hypertext
Text format conversions
Grouping the text into links
Converting hypertext text to linear
Dividing the text into nodes
