Week 3 - Networking and the Internet Flashcards
Unix was used to create the internet (T or F)
T
What are the 2 ways of translating names (network resource) into addresses?
Host table
Domain Name Service (DNS)
DNS is NOT based on the client/server model (T or F)
F - DNS is based on the client server model
What is the difference between DNS and host table?
Host tables are stored locally on each computer and are faster for local lookups
DNS is distributed across multiple servers worldwide and is automatically updated.
The actual records stored on a DNS are defined in ______
Zones
What are the 3 DNS zone types?
AD-Integrated
Standard Primary
Standard Secondary
Name resolution steps for DNS?
Check host table > ask primary DNS server > if cannot resolve, pass to another DNS server.
what are the 4 DNS database files?
Forward lookup - resolve name
Reverse lookup - resolve ip
Root hints
Zone
What are the 7 DNS record types?
A record - host address for name
CNAME - Alias for hostname
MX
NS
PTR
SOA SVR
What is BIND?
Berkeley Internet Name Domain: implementation of DNS
What is NFS?
(Need for speed)
Network file system, share files between computers on a network using client server model.
What is NIS?
NIS (Network Information Service) is a system that stores and manages user accounts, passwords, and other network configuration data centrally
What does the ‘rwho’ command do?
Lists all users logged into LAN
What does ‘rlogin’ do?
log in to a remote host
what does ‘rsh’ do?
Execute a command on a remote host
What does ‘rcp’ do?
Copy a file from a remote host
what is the ‘ftp’ command?
Similarly what is ‘sftp’?
ftp - file transfer protocol
sftp - file transfer protocol using ssh
Connects client to FTP server
what does ‘scp’ allow?
Allows transferring files securely to remote server.
