DICOM/Computer Mngmt

Question 1

Define Bit

Answer 1

Binary digit, has a value of 0 or 1

Question 2

Define Byte

Answer 2

Collection of bits, almost always 8 bits

Question 3

1 kilobyte equals how many bytes

Answer 3

1 kB = 2^10 or or 1024 bytes

Question 4

1 megabyte equals how many kilobytes

Answer 4

1 MB = 1024 kilobytes

Question 5

1 gigabyte equals how many megabytes

Answer 5

1 GB = 1024 megabytes

Question 6

Define Analog

Answer 6

a variable signal that is continuous in time and amplitude

Question 7

Define Digital

Answer 7

a discrete signal

Question 8

What is ADC and what does it do

Answer 8

Analog to Digital converter; converts analog signals to discrete signals

Question 9

What is RAM

Answer 9

Random Access Memory - where the operating system, applications, and data in current use are kept so they can be quickly reached by the computer processor

Question 10

What is ROM

Answer 10

Read Only Memory - data stored in ROM cannot be modified

Question 11

What is CPU

Answer 11

Central processing Unit - brains of computer, where most calculations take place

Question 12

DICOM

Answer 12

Digital Imaging and Communications in Medicine

Question 13

What are the 2 protocols of DICOM?

Answer 13

1. TCP - transmission control protocol

2. IP - Internet Protocol

Question 14

PACS

Answer 14

Picture Archiving and Communications System

Question 15

What are the 2 web-based interfaces and how/what do they do:

Answer 15

1. VPN - virtual private network - can include as little or as much as you want (does not use a web server - more secure than SSL)
2. SSL - Secure Sockets Layers - used over http or web connection, encrypting info to web server, utilizes a certificate/keys