In un computer con una CPU con 16 linee di Address Bus e un Data Bus a 8 bit si deve allocare una ROM da 2KByte a partire dall'indirizzo 0x0000, una RAM da 16KByte a scendere dall'indirizzo 0x e un dispositivo di I/O che utilizza 512 byte subito dopo la ROM (in modalità memory-mapped I/O). Quale sarà la posizione dei tre componenti in memoria? ROM 0x0000-0x03FF, I/O 0x0400-0x05FF, RAM 0xC000-0x
ROM 0x0000-0x03FF, I/O 0x0500-0x06FF, RAM 0xE000-0x
ROM 0x0000-0x04FF, I/O 0x0400-0x05FF, RAM 0xC000-0x
ROM 0x0000-0x04FF, I/O 0x0500-0x06FF, RAM 0xC000-0x

Usually, when we sniff packets, we are only interested certain types of packets. we can do that by setting filters in sniffing. scapy’s filter use the bpf (berkeley packet filter) syntax; you can find the bpf manual from the internet. set the following filters and demonstrate your sniffer program again (each filter should be set separately): (a) capture only the icmp packet. (b) capture any tcp packet that comes from a particular ip and with a destination port number 23. (c) capture packets comes from or to go to a particular subnet. you can pick any subnet, such as 128.230.0.0/16; you should not pick the subnet that your vm is attached to.

Evaluate the scenario below and indicate how to handle the matter appropriately. situation: michael received an e-mail from what he thought was his doctor’s office, requesting his social security number. since he had just been in to see his doctor last week, he replied to the e-mail with his social security number.

An npn transistor is correctly biased and turned on if the a. base is negative. b. collector is negative. c. collector is positive with respect to the emitter and negative with respect to the base. d. collector is the most positive lead followed by the base.