Answer:
B
Explanation:
You need Name , Age and Gender
the second requirement should only match the last row where age is 20 and gender is male.
thrid requirement of the query is that its syntax should be correct.
Option B staisfies all of required so it is the correct option.
Answer:
TTL
Explanation:
TTL means time -to- live field is a counter that is designed to keep packets from circulating indefinitely in the network case forwarding tables accidentally create cycles. An IP datagram is typically initialized with a TTL of 60 or 64 and the TTL is decremented by one each time it enters a router. If the TTL reaches zero, the router will discard the packet. It is one of the components of the IP datagram
Before starting an inboard gasoline engine, you should
remove the engine cover completely to let the engine air out. Next is to change
the fuel filter or the water separator. Marine fuel filters and water
separators help draw water from the boat fuel, therefore protecting the motor
from the water. If water were to get in, it could cause serious problems.
You should also consider changing the engine oil. This is
especially so if the motor boat has been sitting around for a while. The fourth
step is to change the oil filter. It is recommended that the oil filter is
changed every 100 hours or every season. Other steps include;
Recharge the battery.
Refuel your boat.
Check the cooling system.