Answer – A
Below are the requirements for AWS Direct Connect.
· Your network must use single mode fiber with a 1000BASE-LX (1310nm) transceiver for 1 gigabit Ethernet or a 10GBASE-LR (1310nm) transceiver for 10 gigabit Ethernet.
· Auto-negotiation for the port must be disabled. Port speed and full-duplex mode must be configured manually.
· 802.1Q VLAN encapsulation must be supported across the entire connection, including intermediate devices.
· Your device must support Border Gateway Protocol (BGP) and BGP MD5 authentication.
· (Optional) You can configure Bidirectional Forwarding Detection (BFD) on your network. Asynchronous BFD is automatically enabled for AWS Direct Connect virtual interfaces, but will not take effect until you configure it on your router.
All other options are invalid because these are all key requirements for AWS Direct Connect.
For more information on AWS Direct Connect, one can visit the below URL
https://docs.aws.amazon.com/directconnect/latest/UserGuide/dc-ug.pdf