The configuration of an Nokia 7750 SR is given below.

Configuration Analysis: The provided image or configuration details are not visible, but generally, in such questions, the answer depends on the IP addresses and AS numbers involved.

BGP Session Types: BGP sessions can be iBGP (within the same AS) or eBGP (between different ASes). Without knowing the AS numbers of routers R2 and R3, it is impossible to determine whether the sessions are iBGP or eBGP.

Insufficient Information: Without the AS numbers and specific configuration details, it is not possible to definitively determine the type of BGP sessions.

References:

Nokia Border Gateway Protocol Fundamentals

Understanding BGP Configuration on Nokia Routers