Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Chapter 11.3, Problem 11.3PP
Practice Problem 11.3 (solution page 967)
Write a
linux> ./dd2hex 128.2.194.24
0x8002c2f2
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[Access Control Policy]: A computer system usually implements the exception
handling mechanism. Like the interrupt handling mechanism, the original program
flow will be stopped until the exception is handled. For example, when a program is
calculating c=a/b, and for some reason b was set to 0, the program will encounter
the "Division by Zero" exception. The control will be given to the exception handler,
and the recovery action could be "report only", "return to the next instruction",
"purge the program", etc., based on the severity of the problem. From the abov
information, we can conclude:
A computer system can integrate both Discretionary Access Control (DAC) and Mandatory
Access Control (MAC) security policies
An administrator can inhibit the exception handling
The exception handling mechanism is like the Mandatory Access Control security policy, no
matter which user caused the exception (even the administrator), the program should be
stopped, and the control should be given to the…
** Write a Java program that:
Takes a number of hostnames as command arguments.
For each hostname, your code must perform DNS lookup, then print the host name
and the version of the resolved IP address, and the resolved IP address, in the
following format:
yahoo.com(IPV4): 74.6.143.25
If the DNS lookup fails for a certain hostname, your code must re-attempt the lookup
for a total of three attempts. If the lookup fails for all three attempts, you should print
the statement "Could not resolve host name" for the host name.
yahoo.com: Could not resolve host name.
Chapter 11 Solutions
Computer Systems: A Programmer's Perspective (3rd Edition)
Ch. 11.3 - Prob. 11.1PPCh. 11.3 - Prob. 11.2PPCh. 11.3 - Practice Problem 11.3 (solution page 967) Write a...Ch. 11.4 - Prob. 11.4PPCh. 11.5 - Prob. 11.5PPCh. 11 - Prob. 11.6HWCh. 11 - Prob. 11.7HWCh. 11 - Prob. 11.8HWCh. 11 - Modify TINY SO that when it serves static content,...Ch. 11 - Prob. 11.10HW
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