Protocol stack layers
Handles delivery of data, via TCP and UDP
Transport/protocol layer
What field stays constant in all fragments?
The IP ID
The world-wide set of all connected internets is _____
The Internet (Big I)
TTL stands for Total Transfer Limit.
False
It stands for: Time To Live
IPv4 uses _____ bit addresses
32 bit
Handles routing and IP addressing
Internet protocol (IP) / network layer
What representation is commonly used to display IP addresses?
Dotted-decimal format
When 2 or more networks are connected via LAN, it is _____
An internet (little i)
ARP is a hardware function
True
It is part of the link layer.
IPv6 uses ____ bit addresses
128 bit
Examples of this are: Browsers, e-mail, web servers
Application layer
When does TTL decrement?
When the packet passes through an IP router.
An internet belonging to an organization is _____
An intranet
A host in a TCP/IP network does not need a TCP/IP stack to communicate with other TCP/IP hosts.
False
Responder of the ARP-request sends an _____
ARP-reply
Normally handled by the hardware
Interface layer (IF) / link layer
What does the flags field indicate?
The flags indicate if a packet can be fragmented.
IP addresses uniquely identifies an interface on _____
The Internet (Big I)
If the source and destination are on the same physical network, the route between the two is direct.
True
What does ARP stand for?
Address Resolution Protocol
What are the major functions of the IP layer?
Routing
Fragmentation and reassembly
Multiplexing and demultiplexing
State 3 facts about TTL
Sets an upper limit for IP hops.
Gets initialized by sender.
When TTL reaches 0, the packet is dropped.
_____ may or may not be connected to _____
An intranet may or may not be connected to the Internet
If routing is indirect, an intermediate IP host (router) must deliver or forward the packet.
True
What does an IP packet consist of?
IP header, protocol header, application data.