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