CSIS450 Final Exam 2021
Due Thursday 4/29 by 11:59 pm via FoxTale


1. Using the Class C Net 100.0.0.0/24, please create the five subnets below. Please
complete the table for each subnet.

Subnet Address
Space
Network Address
x.x.x.x
Broadcast Address
x.x.x.x
Netmask
/x
Subnet 1 16
Subnet 2 16
Subnet 3 32
Subnet 4 64
Subnet 5 128

2. What is the difference between hard and soft links in Linux? Make sure to explain at
least 1 use-case for each type of link.

3. Write a bash script that accepts a single directory as a command line argument and
generates a file foo that lists all files in the directory that are executable for all. The
purpose of this script would be to generate security reports on a per user basis. You can
assume that any directory given to the script does not have another directory inside (no
need for recursion on this problem)

4. You are an administrator for a Linux server when your users begin complaining that the
server has become ‘very slow’. Please explain at least 2 possible causes of this and the
steps you would take to rule out or confirm each cause?

5. What is the difference between a hub and a switch?

6. What commands would you use on a Cisco device to configure ACLs to block all Telnet,
allow SSH only from 192.168.74.3 and allow all other traffic?

7. What commands would you use to enable the ACLs above inbound on gb1/0/2 on your
router?

8. Clockwork Industries previously implemented an Active Directory structure and has
been mostly diligent in placing users and computers in the appropriate Organizational
Units, but recognizes they are not fully maximizing Active Directory’s potential from a
security standpoint. What recommendations do you have for the organization?



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