I believe that the multiple questions attached to this question is 
a) Hello
b) Link groups
c) Path groups
d) Heartbeats
The Answer is B and C
The physical interfaces that are supposed to be monitored are connected into a link group and a firewall failure can be triggered when one or all physical interfaces in the group failPath Monitoring helps monitor the full path to mission critical IP addresses. By default, any one of the IP addresses becoming unreachable will end up causing the firewall to change the HA to tentative state
        
             
        
        
        
Answer:
17 países.
Explicación:
Hay diecisiete países que tienen vehículos aéreos no tripulados armados y donde se ha implementado un sistema de vigilancia con drones. Los drones son excelentes para recopilar grandes cantidades de datos de imágenes. Se puede implementar fácilmente para la vigilancia y mantener la seguridad. Se puede conducir a través de la computadora, no del piloto en él, por lo que el piloto se guarda. Los aspectos negativos de los drones es que tienen tiempos de vuelo cortos y el clima puede afectar fácilmente a los drones. Las operaciones precisas son difíciles y también eliminan futuros trabajos.
 
        
             
        
        
        
Answer:
Pre-processors look at organize traffic and screens parcel transmissions by examining andreassembling divided data.Frag2:preprocessor that battles against IP fracture attacks.Attackers sends a fragmentedTCP bundle with header data that gets entrance through a firewall.At the equivalent time,other parcels with vindictive information "slip" by the firewall undetected because of the fragmentationbeing so little by overwriting the header information.The frag2 pre-processor is specificallydesigned to break down bundle discontinuity to search out noxious information in the sections, which iswhy this pre-processor ought to never be turned off.Stream4:preprocessor Snort uses to coordinate assault marks over numerous packets.Anattacker endeavors to send different parcels into the system conveying parts of the attackpayload which are required to be reassembled by the host so as to start an attack.Stream4 stores the bits of the mark until all bundles are transmitted.Once they are alltransmitted, Stream4 finishes the signature and an alarm is created.
Explanation: