Chapter 6 TCP/IP Basics Flashcards
What layer does IPv4. IPv6 and ICMP work on
Layer 3 Network layer
What does the protocol ICMP (Internet Control Message Protocol) do
handles IP error reporting and diagnostics
How does a sender and receiver acknowledge each other over TCP
by using the 3 way handshake SYN, SYN-ACK, and ACK
What port does IMAP4 use
port 143
Where is the source port number stored at
Inside the IP packet
What are the parts of a TCP header
Source port , Destination port, Sequence number, and ack number
What are the parts of a udp header
Source port, Destination port, length, and checksum
What does UDP stand for
User datagram protocol
What are the two most common UDP networking protocols
(DNS) Domain Name System and (DHCP) Dynamic Host Config Protocol
Which protocol chops up data into segments at the transport layer TCP or UDP
TCP, UDP just gets a header
What is ARP (Address Resolution Protocol)
A protocol that resolves Ip addresses to a ethernet MAC address
What is the range for a Class A IP address
1 - 126
What is the range for a Class B address
128 - 191
What is the range for a class C Ip address range
192 - 223
What is the range for a class D ip address
224 - 239
What is the range for a class E ip address range
240 - 255
What (CIDR) Classless Inter-Domain Routing
The process of taking a Class of Ip addresses and chopping it up into multiple smaller groups called subnets
What is the loopback address for IPv6
::1:
What is the address for APIPA
169.254.XX.XX
What is the Linux command to enter Ip information on Unix / Linux systems
ip addr add (ip-address) dev eth1
What is DORA (Discover Offer Request and Acknowledgement
The process in which a DHCP server gives out ip addresses
What port does DHCP servers use
UDP port 67
What port does DHCP clients use
port 67
What are the three requirements for a DHCP server to work
- A pool of legitimate IP addresses that it can pass out to clients
- It needs to know the subnet mask for the network
- It needs to know the ip address for the default gateway for the network
What is a DHCP scope
A range or pool of Ip addresses
What is a IP helper address
The ip address of the real DHCP server
what is the command to reestablish a lease to a DHCP server
ipconfig /renew
what is the command to get rid of an ip address lease
ipconfig /release
What are the commands to release and renew an ip address lease on Mac and Linux
eht0 down and eth0 up
What is a DHCP failover
two dhcp servers work together to provide DHCP for a network
