258902
Description
Flashcards by gregadams2, updated more than 1 year ago
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Created by gregadams2
over 10 years ago
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| Question | Answer |
| IBM's first multipurpose machine was called the ______ | Mark 1 |
| _____ was developed jointly by IBM and Microsoft | OS/2 |
| Cracking into a system as a political act is known as _____ | hacktivism |
| What is an undirected hacker | Someone who is motivated by the challenge of breaking into a system |
| What is a directed hacker | a cracker motivated by greed and or politics |
| What is it called when a program tries to place more information into a memory location than that location can handle | Buffer overflow |
| one of the main functions of the CPU's ______ is to add numbers | ALU(arithmetic logic unit) |
| What is a bus used for | facilitates communication between the CPU, memory, and I/O devices |
| What is the term that refers to the family of components used to store programs and data | storage |
| What is the process of painting an image on the screen of a monitor called | raster scanning |
| ___ measures how much information can be carried in a given time period over a wired or wireless communication medium | bandwidth |
| ______ is used to measure the quality of a communication channel | signal to noise ratio |
| What is attenuation | attenuation is the reduction of strength of an electrical signal as it travels along a medium |
| how many voice channels can normal copper wire carry | 24 |
| a DSL subscriber is required to be no more than how many feet away from the nearest telephone company switching station | 18000 feet |
| what are the 7 discrete layers involved in the OSI model (a standard for allowing different types and brands of computers to communicate with one another) | 1. physical 2. data link 3. network 4. transport 5. session 6. presentation 7. application |
| What is the physical layer of the OSI reference model | defines the mechanical specifications for activating and maintaining the physical link (ie the cable) |
| what is the data link layer of the OSI reference model | provides transit of data across the physical link |
| What is the network layer of the OSI reference model | provides connectivity and path selection between two end systems. |
| what si the transport layer of the OSI reference model | responsible for guaranteed delivery of data. also responsible for fault detection |
| what is the session layer of the OSI reference model | responsible for establishing maintaining and terminating the communication session |
| what is the session layer of the OSI reference model | responsible for establishing maintaining and terminating the communication session |
| what is the session layer of the OSI reference model | responsible for establishing maintaining and terminating the communication session |
| What is the presentation layer of the OSI reference model | responsible for formatting data so its ready for presentation to an application |
| what is the application layer of hte OSI reference model | responsible for giving applications access to the network |
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