Mod 9-12

Question 1

which 2 ports are used in the process of sending and receiving emails?

Answer 1

POP
IMAP
SMTP

Question 2

which 2 application provide virtual terminal access to remote servers?

Answer 2

telenet

SSH

Question 3

what is a function of DNS server?

Answer 3

resolving the domain name to IP address and vice versa

Question 4

which statement accurately describes dynamic NAT?

Answer 4

provides dynamic mapping of inside local to inside global IP addresses

Question 5

what purpose does NAT64 serve in IPv6?

Answer 5

converts IPv6 packets into IPv4 packets

Question 6

what type of applications are best suited to use UDP as the transport layer protocol?

Answer 6

applications where delay/lag could be noticeable

Question 7

how does a client computer determine what source port number to assign to a UDP header?

Answer 7

the port number is random within the range of dynamic port numbers

Question 8

what is a socket?

Answer 8

combination of source IP address and port number of destination IP
or port number and destination IP address

Question 9

3 pieces of information identification by URL

Answer 9

domain name being accessed
location of resources
protocol being used

Question 10

why is DHCP for IPv4 preferred for use on large scale networks?

Answer 10

it is more efficient way to manage IPv4 addresses than static address assignment

Question 11

what is the purpose of using a source port number in a TCP communication?

Answer 11

to keep track of multiple conversation between devices

Question 12

what type of server would us IMAP?

Answer 12

email

Question 13

windows command displaying:
protocol in use
the local address and port numbers
the foreign address, port number and the connection state

Answer 13

netstat