0
TTL (Time to Live) is reduced by 1 every time a router forwards the packet. The purpose of this is to reduce the negative effects of routing loops. If two routers are misconfigured (it happens) and send a packet back and forth to each other assuming the other router will take care of it, the packet would simply never go away, if it wasn't for TTL. It guarantees that this can only happen a maximum of 256 times (generally quite a bit less). Once that TTL reaches zero, the packet is discarded.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
TTL logic is preferred to DRL logic?
TTL is faster and does not lose amplitude
What is the importance of TTL compatibility?
the ttl compatability is nothing but the time to live factor of a packet in the dns system
Ttl logic family has an output state known as?
true and false
What song is playing in the Coriolanus movie trailer?
It's Here by TTL
What is ttl circuit?
A digital circuit composed of bipolar junction transistors (BJTs). Widely used in all variety of electronic applications, especially prior to CMOS circuits becoming popular, TTL superseded the earlier RTL (resistor-transistor) and DTL (diode-transistor) logic designs, which used more power. In TTL, transistors are used to both isolate inputs and perform the logic switching. A "TTL" designation on a circuit input or output indicates a digital circuit rather than analog.Read more: transistor-transistor-logic-electronics
What is the operating temperature for TTL?
The operating temperature for standard commerdcial TTL (74 series) 0 to 70 degrees Celsius. Military grade between -40 and 125 degrees. Some commercial 74 series used for industrial and automotice applications between -15 and 85 degrees C. In the real world standard commercial TTL often works quite happily under mil spec conditions. I know because I have tried it!
Interfacing of ttl with cmos and cmos with ttl?
whis is Endurance mors or ttl
Which has a shorter propagation delay TTL or CMOS?
TTL
What is the full form of TTL?
TTL stands for Time To Live
What is the value of ttl set to in Tunnel mode for IPSec?
TTL is set to 40
What it the fullform of TTL in ping utility?
The full form of TTL is Time To Live
TTL logic is preferred to DRL logic?
TTL is faster and does not lose amplitude
Which logic family has the least propagation delay?
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.
Why when you ping a host in a LAN the TTL value is 128 but if you ping a host in another network the TTL value decreases from 255 to 254 my question is why the TTL value is 128?
The TTL or Time To Live is a value used to make packets eventually die, so they don't end up in infinite loops, clogging the network over time. Certain network devices decrement this value (routers mainly) by one as they process it. When the TTL reaches zero, the packet is discarded. Each Operating System implements its TCP/IP stack differently and starts packets off with the TTL of their choosing (the default TTL of the stack can be changed, but rarely is). Windows is 128 Linux is 64 Cisco is 256 So if your TTL is around 128 (remember the TTL gets decremented by certain devices) you are PROBABLY pinging a windows box. If it's near 256, probably Cisco etc. You can't rely on this information because other network devices can rewrite the TTL in a packet, but it's a decent indication of the OS on the other end, especially if it's a box you own and you aren't going through firewalls etc.
The main advantage of ECL over TTL?
The main advantage of ECL over TTL is speed.
What has the author Wilhelm Ho ttl written?
Wilhelm Ho ttl has written: 'The secret front'
Why is setting the TTL to a small number a bad Idea?
Because a TTL determines the maximum number of days the server will TTL of 0 means that the resource record should not be cached.
