For your biology class, you will be giving a presentation of the findings of a plant

Computers and Technology

2 answers:

kaheart [24]4 years ago

5 0

Answer:

PowerPoint

Explanation:

It is dedicated for presentation.

Sergio039 [100]4 years ago

4 0

Answer: Impress or PowerPoint

Explanation:

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List the three control problems associated with competingprocesses and briefly define each.

hjlf

Answer and explanation :

the three control problems associated with competing process are

MUTUAL EXCLUSION : We know that some resources are shareable and some are not shareable. which means only one process can access the resource at a time this type of resources are called critical resources this code can be access at only one process at a time. the other process if required to access should not be allowed
DEADLOCK: this hold the process without complete for example suppose there are two resources R1 and R2 and two process P1 and P2 and P1 use R1 and P2 use R2 but after some time when P1 needs R2 but R2 is not available as it is used by P2 so the all process will be on hold
STARVATION : when priorities are given to the process as high priorities and low priorities. And high priorities process always competing then low priorities process have to wait for very long time this is called starvation

3 0

3 years ago

attackers typically use ack scans to get past a firewall or other filtering device. how does the process of an ack scan work to

bogdanovich [222]

Attackers frequently use ACK scans to circumvent a firewall or other filtering tools. During a NULL scan, all packet flags are enabled. The most recent versions of Nessus Server and Client are compatible with Windows, Mac OS X, FreeBSD, and the vast majority of Linux variants.

ACK scans are used to identify hosts or ports that have been blocked or are resistant to other types of scanning. An attacker uses TCP ACK segments to learn about firewall or ACL configuration.

Attackers probe our router or send unsolicited SYN, ACK, and FIN requests to specific UDP/TCP ports.

TCP ACK Scan sends an ACK message to the target port to determine whether or not it is filtered.

On unfiltered ports, a RST reply packet will be sent for both open and closed ports. Filtered ports will either generate no response or generate an ICMP reply packet with an unreachable destination.