install memory requires you to take off the bottom portion of the laptop.
Answer:
Network scan
Explanation:
Cyber security can be defined as preventive practice of protecting computers, software programs, electronic devices, networks, servers and data from potential theft, attack, damage, or unauthorized access by using a body of technology, frameworks, processes and network engineers.
Some examples of cyber attacks are phishing, zero-day exploits, denial of service, man in the middle, cryptojacking, malware, SQL injection, spoofing etc.
Generally, a security assessment is carried out by network security experts on a regular basis to determine potential loopholes or vulnerabilities in the information and technology (IT) infrastructure. One of the techniques or approach used in security assessment is a network scan.
A network scan is a security assessment technique used for the automatic detection of host systems on a network. Although a network scan isn't capable of discovering or detecting all the weaknesses on a network, it avails users information about the computer systems that are active on the network and what services the computer systems offer or what ports are available on them.
Answer:
True
Explanation:
Solution
ZigBee uses unlicensed frequency bands but operate at slower speed or data rates.
ZigBee: This communication is particular designed for control and sensor networks on IEEE 802.15.4 requirement for wireless personal area networks (WPANs), and it is a outcome from Zigbee alliance.
This communication level defines physical and (MAC) which is refereed to as the Media Access Control layers to manage many devices at low-data rates.
Answer:
The method written in Java is as follows:
public static String reverseString(String str){
String result = "";
int lentt = str.length();
char[] strArray = str.toCharArray();
for (int i = lentt - 1; i >= 0; i--)
result+=strArray[i];
return result;
}
Explanation:
This defines the method
public static String reverseString(String str){
This initializes the result of the reversed string to an empty string
String result = "";
This calculates the length of the string
int lentt = str.length();
This converts the string to a char array
char[] strArray = str.toCharArray();
This iterates through the char array
for (int i = lentt - 1; i >= 0; i--)
This gets the reversed string
result+=strArray[i];
This returns the reversed string
return result;
}
<em>See attachment for full program that includes the main method</em>
