CNIT 344 Exam 2
IPv4 - Answer-connectionless (the sender doesn't know if the receiver is present or if the packet arrived or if the receiver can read the packet), unreliable (IP does not have the capability to manage and recover from undelivered or corrupt packets, so other protocol layers manag...
CNIT 344 Exam 2
IPv4 - Answer-connectionless (the sender doesn't know if the receiver is present or if
the packet arrived or if the receiver can read the packet), unreliable (IP does not
have the capability to manage and recover from undelivered or corrupt packets, so
other protocol layers manage reliability), media independent
32 bits/4 bytes - Answer-Key piece of the IP Packet Header, length of IPv4 header
Type of service - Answer-Key piece of the IP Packet Header, 8 1-bit fields, QoS,
DSCP
Flag and Fragment Offset - Answer-Key piece of the IP Packet Header, used in
reconstruction of any fragments
Time to Live - Answer-Key piece of the IP Packet Header, maximum hops before
undeliverable
Protocol - Answer-Key piece of the IP Packet Header, upper layer protocol
(TCP/UDP)
Source and destination address - Answer-Key piece of the IP Packet Header, the
two 32 bit binary values
Network and host - Answer-two parts of an IPv4 address
Default gateway - Answer-the address of the router interface, must be on the same
network as all of the hosts
Address resolution - Answer-the process of mapping a hardware address to a
higher-layer protocol address (maps IPv4 address to specific MAC address)
CIDR Notation - Answer-putting a slash after an IPv4 address that represents the
number of network bits, also known as classless routing
Layer 2 - Answer-MAC addresses are at this layer
Layer 3 - Answer-Network address are at this layer
NAT - Answer-allows hosts in a private network to use a different IP address to
access hosts and/or services on an external network, can be applied on source
address or destination address
Inside local address - Answer-an RFC 1918 address assigned to a host on an inside
network
Inside global address - Answer-a valid public address that the host on the inside
network is assigned as it exits the router
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