Go CCIE Go!! - A Cisco Certified Internetwork Expert

Hi,
I have some question perspective of ccie lab
Q1- In BGP, we use next-hop-self command when other IBGP neighbours don’t have route to that next hop router. for example
R2————–IBGP—————–R1—————-EBGP————–R3 AS 10 12.1.1.0/23 AS10 13.1.1.0/24 AS30
In this scenario, of R2 doesn’t have route to 13.1.1.0 then we use next-hop-self on R1 but lets suppose we are running any IGP and R2 has route to 13.1.1.0 network then do we still need to put next-hop-self command?
Q2 - When we redistribute one EIGRP AS to other EIGRP AS, do we need to configure the metric with redistribution command?
Q3 - which configuring something on vty line, we usually configure vty line from 0 4 but in lab exam we should configure all vty lines are 0 4 is ok?
Q4 - Regarding IGP router-id, should we configure router-id by our own or only if exam will ask? And are normally they say “Configure router-id on all ospf routers” or like “don’t configure router-id on this this router”.
Q5- BGP Peering, In IBGP peering we should configure all peer based on loopback or only if they ask or we have too think where we need direct peering and where need based on loopback with update-source command??
Please answers my question as per lab requirement not general practises because i heard because of these thing people lose points.
Thanks & Regards
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