CNIT 344 Final Exam Latest Version 100% Pass

CNIT 344 Final Exam Latest Version 100% Pass Inside local address The IP address assigned to a host on the inside network. When the lease time start for DHCP After the DHCPAck is sent. If you can ping 127.0.0.1 in your computer, what does it mean? 127.0.0.1 is the loopback address TCP/IP is installed properly in your computer Command to bind VLAN to port switchport access vlan 1 Command to configure trunk port switchport trunk encapsulation dot1q switchport mode trunk switchport trunk allowed vlan 1 switchport trunk allowed add vlan 114 Inside global address A valid public address that host on the inside network is assigned as it exits the router Outside Global address 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? 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? Inside global address IPv4 Characteristics 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 It's an outside global address. Describe NAT (network address translation) 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) 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 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? 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 The address of the router interface Network portion needs to be on the same network as all of the hosts eg: Host: 192.168.1.2/24 Gateway: 192.168.1.254/24 Address Resolution Protocol (ARP