SRX 4100 with HA

Dear Sir,

I would like to use SRX 4100 with HA. May I know.

1. I would like to know can i use 1G or 10 G DAC cable for HA links (control and fab ports) ?
2. i might use 1 G sfp or 10 SFP + module ?
3. if i use SFP module ,can i use multimode or single mode depend on SFP module type ?