CNIT 344 FINAL QUESTIONS AND
ANSWERS WITH VERIFIED SOLUTIONS
100% CORRECT | UPDATED 2025
Inside local address - ANSWER The IP address assigned to a host on the inside
network.
When the lease time start for DHCP - ANSWER After the DHCPAck is sent.
If you can ping 127.0.0.1 in your computer, what does it mean? - ANSWER
127.0.0.1 is the loopback address
TCP/IP is installed properly in your computer
Command to bind VLAN to port - ANSWER switchport access vlan 1
Command to configure trunk port - ANSWER switchport trunk encapsulation
dot1q
switchport mode trunk
switchport trunk allowed vlan 1
switchport trunk allowed add vlan 114
Inside global address - ANSWER A valid public address that host on the inside
network is assigned as it exits the router
,Outside Global address - ANSWER A reachable IP address assigned to a host on
internet.
In a home network where it has a pc, a router, and a web server, pc has an address
of 192.168.1.10, which is what address? - ANSWER Inside local address
In a network where it has a pc, a router, and a web server, a router has an address
of 200.200.200.1. When a PC trying to send a packet to the internet, it uses
router's address, which is what address? - ANSWER Inside global address
IPv4 Characteristics - ANSWER Connectionless: data is transmitted to other
hosts without prior arrangement, UDP is also connectionless.
Best-effort delivery: A network in which the network doesn't provide any
guarantee that the data is delivered or the quality of data.
Media independent: Operates independently of the medium carrying the data.
However, it's concerned with MTU.
Defined by RFC 791
In a home network where it has a pc, a router, and a web server, a webserver has
an address of 100.100.100.1, which is what address - ANSWER It's an outside
global address.
, Describe NAT (network address translation) - ANSWER When a packet is sent
out to from local network, a public address is assigned to this packet, usually is the
address of the router.
Describe PAT (Port address translation) - ANSWER When two machines in the
local network want to access the services on public network, port will be added to
the inside global IP add to identify machines.
Next available port - ANSWER What if two local machines use the same port
number to access a web service? Router will use next available function.
if two machines, one with IP 192.168.1.10 and one with 192.168.1.11 both use
port 100 to access google. The router will with an add of 200.200.200.1 will likely
use 200.200.200.1:100 for .10 machine and 200.200.200.1:101 for .11 machine.
During this process, inside local machine's service port will not be changed.
When a packet is sent, what sender doesn't know? And what receiver doesn't
know? - ANSWER Sender doesn't know if the receiver is present
if the packet arrives
if the receiver can read the packet
receiver doesn't know when it is coming.
Gateway - ANSWER The address of the router interface
Network portion needs to be on the same network as all of the hosts
eg:
ANSWERS WITH VERIFIED SOLUTIONS
100% CORRECT | UPDATED 2025
Inside local address - ANSWER The IP address assigned to a host on the inside
network.
When the lease time start for DHCP - ANSWER After the DHCPAck is sent.
If you can ping 127.0.0.1 in your computer, what does it mean? - ANSWER
127.0.0.1 is the loopback address
TCP/IP is installed properly in your computer
Command to bind VLAN to port - ANSWER switchport access vlan 1
Command to configure trunk port - ANSWER switchport trunk encapsulation
dot1q
switchport mode trunk
switchport trunk allowed vlan 1
switchport trunk allowed add vlan 114
Inside global address - ANSWER A valid public address that host on the inside
network is assigned as it exits the router
,Outside Global address - ANSWER A reachable IP address assigned to a host on
internet.
In a home network where it has a pc, a router, and a web server, pc has an address
of 192.168.1.10, which is what address? - ANSWER Inside local address
In a network where it has a pc, a router, and a web server, a router has an address
of 200.200.200.1. When a PC trying to send a packet to the internet, it uses
router's address, which is what address? - ANSWER Inside global address
IPv4 Characteristics - ANSWER Connectionless: data is transmitted to other
hosts without prior arrangement, UDP is also connectionless.
Best-effort delivery: A network in which the network doesn't provide any
guarantee that the data is delivered or the quality of data.
Media independent: Operates independently of the medium carrying the data.
However, it's concerned with MTU.
Defined by RFC 791
In a home network where it has a pc, a router, and a web server, a webserver has
an address of 100.100.100.1, which is what address - ANSWER It's an outside
global address.
, Describe NAT (network address translation) - ANSWER When a packet is sent
out to from local network, a public address is assigned to this packet, usually is the
address of the router.
Describe PAT (Port address translation) - ANSWER When two machines in the
local network want to access the services on public network, port will be added to
the inside global IP add to identify machines.
Next available port - ANSWER What if two local machines use the same port
number to access a web service? Router will use next available function.
if two machines, one with IP 192.168.1.10 and one with 192.168.1.11 both use
port 100 to access google. The router will with an add of 200.200.200.1 will likely
use 200.200.200.1:100 for .10 machine and 200.200.200.1:101 for .11 machine.
During this process, inside local machine's service port will not be changed.
When a packet is sent, what sender doesn't know? And what receiver doesn't
know? - ANSWER Sender doesn't know if the receiver is present
if the packet arrives
if the receiver can read the packet
receiver doesn't know when it is coming.
Gateway - ANSWER The address of the router interface
Network portion needs to be on the same network as all of the hosts
eg:
