hey i need the solution fast . for all questions

a)What is the role of the TCP checksum field?

a. Flow control

b. Error detection

c. Error correction

d. Congestion control

b)The error control mechanism in TCP

a. Acknowledgment

b. Checksum

c. Retransmission

d. All of above

c)What is an alias record used for?

a. a routable internal address (similar to the 192.168 address space.

b. creating an alternate record or alias for an existing record

c. in an unsecured location facing the internet

d. when you have a large number of single-name clients to support

d)TCP is a

a. Pull protocol

b. Out of band protocol

c. Push protocol

d. DNS protocol e)What is the most common record type in DNS?

a. dnscmd.exe

b. reverse lookup

c. Host (A. records

d. name records k)Domain names provide an easy way to recognize and memorize the IP address to finde webpage in the Internet.

a. False

b. True v)The physical address, is the address as defined by its LAN.

a. True

b. False p)Top level domains are used at the top of the hierarchy and provide a way down to the lowest level in the hierarchy.

a. True

b. False n)Records in DNS give you information to connect your web browser with remote machines

a. False

b. True s)The domain name is the last element of a URL, for example, google.com or facebook.com.

a. True

b. False