Because a TTL determines the maximum number of days the server will TTL of 0 means that the resource record should not be cached.
whis is Endurance mors or ttl
Ttl: 7432, 744075cmos: 4071
small battery located on the motherboard or computer case.
The TTL (Time To Live) value is a number associated with network routing packets. An information packet will only be forwarded to a certain number of routers before the packet is dropped (deleted). The TTL is a counter decreased by 1 when the packet is forwarded to another router. When the TTL reaches zero, it will not be forwarded to another router.
TTL
TTL stands for Time To Live
TTL 7410CMOS 4023DTL 962/C
TTL is set to 40
TTL is faster and does not lose amplitude
The full form of TTL is Time To Live
TTL 74 86 series or CMOS 4030
Here are the propagation delays for these gatesa) ECL = 2nsb) TTL = 1.5-33ns depending on the type of TTL. Conventional TTL is 9ns, Advanced Schottky TTL is 1.5nsc) RTL = 25nsd) CMOS = 5-20ns depending on if it is conventional CMOS, TTL pin compatible CMOS, high speed TPC CMOS or TTL compatible CMOSSo the fastest would be the Advanced Schottky TTL (74ASxx) at 1.5ns but the choice simply said TTL which I would interpret as Conventional TTL (74xx/54xx) which would have a propagation delay at 9ns.So the winner is ... (a) ECL which has a propagation delay at 2ns.