How might the idea about the representation for graphs be used to represent dense and sparse matrices?
What will be an ideal response?
A dense graph will have higher connectivity than a sparse graph, consequently, the adjacency matrix will be more space and time efficient for dense graphs and the adjacency list would be better for sparse matrices.
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Consider the statement below:
StringBuilder sb1 = new StringBuilder("a toyota"); Which of the following creates a String object with the value "toy"? a. String res = sb1.subString(2, 5); b. char dest[] = new char[sb1.length()]; sb1.getChars(2, 5, dest, 0); String res = new String(dest); c. char dest[] = new char[sb1.length]; dest = sb1.getChars(2, 5); String res = new String(dest); d. char dest[] = new char[sb1.length()]; dest = sb1.getChars(0, 3); String res = new String(dest);
What is wrong with the following code fragment? What are three distinct ways it could be changed to remove the flaw?
What will be an ideal response?
Which of these is NOT one of the attributes the author says may be found in definitions of usability:
a. Learnable b. Efficient c. Habit forming d. Delightful
A network technician is tasked with designing a firewall to improve security for an existing FTP server that is on the company network and is accessible from the internet. The security concern is that the FTP server is compromised it may be used as a platform to attack other company servers. Which of the following is the BEST way to mitigate this risk?
A. Add an outbound ACL to the firewall B. Change the FTP server to a more secure SFTP C. Use the implicit deny of the firewall D. Move the server to the DMZ of the firewall