week 6 networking Flashcards
what is network
A group of systems connected together, sharing information.
what does there three network stands for?
LAN
MAN
WAN
Local area network
metro area network
wide area network
IQ:What is the difference between a WAN and the internet?
WAN : A group of LANs of a specific company connected together, spanning a wide geographical area.
Internet: A group of LANs connected togethers spanning the globe.
Describe these Categories of Networks.
1) p2p
2) client -server NEtwork
P2P Network: Peer-to-Peer Network is a group of systems connected together, sharing information without a central server involved.
Client-Server Network
A group of systems connected together, sharing information from a central server.
IQ: How to display the public IP address of your router?
www.whatismyip.com or www.ipchicken.com
Describe a Default Gateway?
opens the LAN to the internet. A Router is a DG (ONLY) when it opens the LAN to the internet.
what does a DHCP Broadcast do?
requests network information. The Public IP of the DG/Router enables internet systems to talk in the LAN
what is a DNS
(Domain Name Server, System, Service)
Translates/resolves hostnames to IP address
Maps hostname to IP address
SCENARIO: If the Default Gateway goes down, the customer may not be able to get on the internet. Respond.
Troubleshooting Techniques:
Determine if anyone else is experiencing issues connecting to the internet.
IF NOT, rule out DG
If no one can connect, then there is a network problem.
If DHCP is down no one will receive an IP address. (Software/Hardware Issues - cause)
IQ: How does DNS get an A record?
When local systems register themselves with a DNS Server after receiving network configuration settings from the DHCP.
Network Configuration Settings
IP Address, DNS Address, Default Gateway Address
what does FQDN stands for?
Fully Qualified Domain Name = Hostname + Domain Name of a system
identify these Domains
local domain
public domain
Local Domain - a group of systems connected together, sharing information controlled by a central server, known as a domain controller. Domain controller is managed by a domain admin.
Public Domain - created by a domain hosting company and used to host websites & web applications.
define Workgroup
a group of systems in a P2P network.
Only systems in a specific work group can share resources.
DHCP: Dynamic Host Configuration Protocol
Assigns network configuration settings/info to a networked system
Leases out dynamic IP addresses to a networked system
