13a - The Internet Flashcards
(26 cards)
What is one advantage of using software as a service?
No need for maintenance, upgrades, or patches
What is another advantage of using software as a service?
Lower hardware requirements for computers
What is a disadvantage of using software as a service?
Reliance on Internet connection
What could be used instead of a domain name to identify a site on the World Wide Web?
IP Address
What does WWW stand for?
World Wide Web
What is the Internet?
A network of interconnected computer networks
What protocol does the World Wide Web use?
HTTP protocol
Define an Intranet.
Network providing Internet facilities within an organisation using Internet protocol
What does URL stand for?
Uniform Resource Locator
State one reason why IPv6 has been introduced to replace IPv4.
IPv4 addresses are running out
What is the purpose of a subnet mask?
Identify which other computers are on the same segment
What subnet mask would be used for segment 192.168.1?
255.255.255.0
What is a server operating system?
An operating system that is optimised to provide specialised services to network clients
What is one difference between routable and non-routable IP addresses?
Routable IP addresses are globally unique
What is meant by the term packet switching?
Messages split into packets, each packet dispatched independently
Describe how domain names are organised.
Hierarchical organisation
What service do Internet registries provide?
Registering domains to people/organisations
What is the main purpose of the DNS system?
Translates Fully Qualified Domain Names into IP addresses
State one advantage of using the DHCP system.
Reduces the need for expert knowledge when configuring a host
How can multiple computers connected to the Internet have the same IP address?
They have private/non-routable IP addresses and use NAT
When will a DNS query not be sent to a DNS server?
The local computer already has a copy of the needed IP address
What is a client port number?
Port that is temporarily assigned for the duration of a connection
Why must these port numbers be well known?
Clients must know which port number to connect to
What does HTML stand for?
Hypertext Markup Language
