Networking notes and worksheet
MAC
(Blank) addresses are associated with networking hardware; they are 48 bits in size (permitting 280 trillion blank addresses)
Security
(Blank) controls access to data
Safety
(Blank) guarantees AVAILABILITY of data
Web
(Blank) is a subset of the Internet (uses IP addresses)
Scripting
(Blank) languages are used for client-side interactivity and server side programming
Domain name server, database server
2 other examples of servers besides Web server, mail server, and FTP server are: (blank, blank)
File server
3 distributed processing alternatives. Which maximizes channel traffic?
Web server, mail server, FTP server
3 examples of server: (blank, blank, blank)
.edu, .com, .mil, .net, .org
5 top level domains: (.blank, blank, blank, blank, blank)
Network
A computer (blank) consists of two or more computers that are connected together so that they can communicate with each other
1 or combination
A message may have (blank) of the 5 different data types, or a (blank)
Rule
A protocol is equal to a (blank)
No
Are security and safety synonyms?
HTTPS
At the University of Scranton, the Web server and campus-wide network is secure. Consequentially, instead of standard transfer protocol for web servers (HTTP), (blank) is implemented (messages are encoded).
Yes
Can you use an IP address number (in decimal) to access a Web server?
Gateway
Connects networks that have different topologies
Bridge
Connects networks with the same topology
Static
Does a Web server have a dynamic or static IP address number?
Yes
Does each domain name refer to only one IP address number?
Yes
Does the client computer need to know which types of data it receives?
2
Every computer has 1 or more CPU. If there are 2 computers, what is the minimum number of CPUs available?
1
Every computer has at least (blank) battery; even when turned off, the battery allows the computer to accomplish simple tasks
Server or client
Every computer on the Internet is either a (blank or blank)
Message
Everything transferred is called a (blank)
2^31
How many different possible numeric values can 32 bits store?
Sign
IP address numbers don't have to have a (blank) bit. Therefore, approximate value is 4.9 billion
Sequential
If AR is high (>30%), then (blank) search is faster
Direct
If AR were low (<30%), then (blank) search method is faster
Client
If you are using a computer to access the Web through Internet, is the computer a client or server? Typically, the computer you use is always a (blank)
Sequential
If you wanted to do a text review for a comprehensive final, then you would do a (blank) search because activity ratio is high
No; No
In Bus topology, is there TND if Off? Down?
No; No
In Hierarchical topology, is there TND if off? Down?
No; Yes
In Ring topology, is there TND if off? Down?
Channel
In Ring topology, the line connecting the devices is a (blank), which transfers messages and can be wired or wireless
Yes; Yes
In Star topology, is there TND if one computer is turned off? if one computer is broken down/malfunctioning?
Node
In a diagram, a (blank) is a symbol in a diagram
Direct
In a textbook, if you want to look up one key term in the text, which search method would be best?
Yes (or we could implement the domain name, which is easier to remember)
In a textual web page reference, we talked about domain name. Could we (as users) enter the IP address number?
Hardware, software, and protocols
In order to have communications, there needs to be 3 things: (blank, blank, and blank)
Software
In order to perform communications, the hardware must have (blank)
Network topology
Logical model that describes how networks are structured or configured
Yes
May one IP address number have more than one domain name?
Dynamic
Mobile computers have (blank) IP addresses because computer gets different IP address numbers as you move down hallway (because of different access points)
Geography
Network types are based on (blank)
Packet-mode
On the Internet (blank) communication is employed
Channels; congestion
Packets may take many different (blanks); this helps avoid (blank) since they are separated
Domain names
People prefer to use (blanks) to access servers because they are textual, and we can remember them easier
Centralized
Star topology uses this processing technique
Sequential and direct/random
The 2 computer search methods are (blank and blank/blank)
Bridge and gateway
The 2 types of connecting networks is (blank and blank)
Linear, binary, and exhaustive
The 3 search techniques are (blank, blank, and blank)
Star, hierarchical, ring, bus, hybrid
The 5 types of network topology
PAN, LAN, MAN, WAN, and International
The 5 types of network types
1
The minimum number of computers required in a network is (blank)
Client/server
This distributed processing alternative is when SW and data reside on the Server that does all or most of the processing and ships results to Client, which then can do minimal processing (formatting of results)
File server
This distributed processing alternative is when a host (server) stores the application SW and data and sends entire files to clients that do all of the processing
Terminal-to-Host
This distributing processing alternative is when a dumb terminal is connected to a host computer that does all processing
Total Network Degradation
This is when the total/entire network cannot function and is not doing anything
Star
This network topology has 1 central hub/computer/host; suffers TND when hub is down or off; associated with centralized processing
Hybrid
This network topology is a mix of the other 4
Bus
This network topology is most popular PC network; various (different possibly) connected devices; it provides communications in both directions
Ring
This network topology is through the device; communications is in 1 direction and feedback is required; if 1 computer is down, but not when turned off, whole network down
Hierarchical
This network topology is tree-like; could be associated with decentralized processing
LAN
This network type is 102 laboratory to whole building
International
This network type is for many nations
WAN
This network type is from state or states to nation
PAN
This network type is sometimes called home
MAN
This network type is used in city or cities to county or counties
Distributed
This processing technique is when nodes do not communicate to share hardware, software, and data when processing; permits multiprocessing or parallel processing; more than 1 CPU that can execute more than 1 instruction simultaneously; multitasking is 1 computer with 1 CPU executing more than 1 program concurrently
Decentralized
This processing technique is when nodes do not have to communicate when processing
Direct/random
This search method is a binary technique example; indexed technique example; one can go directly to the item being sought
Sequential
This search method is a linear and exhaustive technique; start at the beginning of list and look at each item
Packets
Transferring big messages is slow, so messages are broken down into (blanks)
RAM
Typically, a computer breaks down/malfunctions because (blank) is overloaded
Scripts
Websites can contain malicious (blanks) that can harm your computer
Activity ratio
What determines which search method is the best? this is the number of items sought / (divided by) total number of items in the list/file
File Transfer Protocol
What does FTP stand for?
Security
What does the "s" in HTTPS stand for?
World Wide Web
What is Web a nickname for/what does it refer to/what is the proper name?
HTTP
When a web server delivers a web page to a client computer, what transfer protocol is implemented?
IP
When computers communicate with each other, they only use the (blank) address
Form
You need to know the (blank) a message is in order to receive (access) it; could be text message, email, voicemail, smoke signals [need to know whether its numeric, character, picture, sound, or motion too]
Date and time
You turn off your computer. Next day, you cold boot it, and the computer knows the correct (blank and blank); thus, that computer has at least 1 battery