Chapter 5 Flashcards
What is flow control
Uses window sizes to protect buffer space and routing devices from being overloaded with traffic.
Processes of TCP
Multiplexing using ports, error-recovery, flow control using windowing, connection establishment and termination, ordered and data segmentation
Port 20 TCP
FTP data
Port 21 tcp
FTP control
Port 22 tcp
Ssh
Port 23 tcp
Telnet
Port 25 tcp
SMTP
Port 53 udp, tcp
DNS
Port 67,68 udp
DHCP
Port 69 udp
Tftp
Port 80 tcp
Http
Port 110 tcp
Pop3
Port 161 udp
SNMP
Port 443 tcp
HTTPS
Connection establishment. 3 way hand shake
Syn, syn-ack, ack
Connection termination
Ack-fin, ack. Ack-fin, ack
Describe bandwidth for QoS
Volume of bits per seconded needed for the application to work.
Describe delay with QoS
The amount of time it takes one up packet to flow from sender to receiver.
Describe jitter with QoS.
The variation in delay.
Describe loss with QoS
Packets discarded by the network. Tcp retransmits the packets.
For QoS what does web browsing need
Delay, jitter, loss, all medium.
For QoS what does VoIP need.
Delay, jitter, loss, all low.
For QoS what does a video call need.
Delay, jitter, loss, all low.
Http://www.google.com/hello
Where is the protocol listed.
Before the double froward slash.
http://www.google.com/hello
Where is the host name listed.
Between the two forward slashes.
http://google.com/hello
Where is the name of the web page.
After the forward slash.
