Answer:
A) Border Gateway Protocol (BGP)
It is a type of protocol that enables the internet to exchange routing information between two autonomous systems (AS). As networks interact with each other, they need a way by which they can communicate and this was made possible with the help of peering.
B) Some autonomous system numbers in Pakistan with organization names and autonomous numbers-
ASN- AS45595/ Pakistan Telecom Company Limited/ IP- 41,984
ASN- AS9260/ Multinet Pakistan Pvt. Ltd./ IP- 36,096
ASN- AS136525/ Wancom(Pvt) Ltd./IP- 34,816
ASN- AS17563/ Autonomous System Number for Nexlinx/IP - 32,000