Determine & Action Network Problems

Question 1

What can be done to prevent credentials from being obtained through packet sniffers?

Answer 1

Encryption.

Question 2

What are some good network policies?

Answer 2

• User Permissions
• User Agreements
• Data Protectoin
• Qualified Network Managers
• Staff Training Polciy

Question 3

What impacts can a poor network policy have on the network?

Answer 3

Can lead to exploits because anyone would be able to access and edit the data as they wish.

Question 4

What are the essential items that should be included in an SLA between a SOHO business and Network Support Company?

Answer 4

Essential items to be included on an SLA include:

• Security of data, therefore trust between the clients and business.
• Maintaining networking devices. Most likely with the use of a checklist or schedule.
• Implementing and acting upon a backup routine.
• Covering for compromises to data.

Question 5

What are 2 benefits of documenting the initial hardware and software setup of a SOHO network?

Answer 5

1. Able to use it as a benchmark for how devices should function.
2. Able to refer to it in the future in case of warranty purposes.

Question 6

Explain how the possibility of data loss can be minimised on a SOHO network.

Answer 6

You can prevent the possibility of data loss by having a backup routine. This may mean that you have a full backup at the end of the end of the week, and then incremental/differential backups leading up to that day.

Question 7

Describe the differences between phishing, social engineering, and a brute-force attack.

Answer 7

The main difference is how the victim is approached.
For phishing, they’re led in by an untrustworthy sites, social engineering uses media to influence them, and brute-force has no interaction.

Question 8

Describe how SQL Injection would be carried out on your school’s website.

Answer 8

Need to be carried out by entering commands into the fields of websites, and thus damaging the database and credentials.

Question 9

Describe what a Dos attack is and how a network responds to one.

Answer 9

An attack where a network is flooded with useless requests and becomes overloaded. As a result, it becomes unresponsive and can crash.

Question 10

What is a botnet?

Answer 10

Computers around the world with different IP addresses with the purpose of flooding networks.

Question 11

Explain the dangers in somebody intercepting your data.

Answer 11

Having your credentials and personal data compromised, and thus less privacy.

Question 12

What procedures are in place to prevent the interception of data?

Answer 12

Encryption, data protection & network managers.

Question 13

What’s the effect and how do you solve bad NICs?

Answer 13

Intermittent network errors.

Visually inspect the card’s LED link lights.

Question 14

What’s the effect and how do you solve failing switches/routers?

Answer 14

Network slowdowns and strange occurrences such as attempts to connect to secure (HTTPS) sites fail.

Complete a power cycle for the switches/routers.

Question 15

What’s the effect and how do you solve daisy chaining?

Where network expansion has been plugging another switch into an existing switch

Answer 15

Slow network.

Replace daisy chained switches with single switches having enough ports.

Question 16

What’s the effect and how do you solve NetBIOS conflicts?

Answer 16

Shared files become inaccessible, increased network congestion.

Ensure older OS’s all receive the most recent service packs.

Question 17

What’s the effect and how do you solve IP conflicts?

Answer 17

Network slowdowns or computers not able to access network.

Configure IP addresses.
assigning IP address, subnet mask etc.

Question 18

What’s the effect and how do you solve excessive network based applications?

Answer 18

Slow network.

Implement hardware-based web filtering tools to prevent application from overwhelming available network bandwidth.

Question 19

What’s the effect and how do you solve spyware infestation?

Answer 19

Security breached.

Detect anti-spyware application and gateway-based protection.

Question 20

What’s the effect and how do you solve virus infestation?

Answer 20

Slow network and corrupted data.

Firewalls, OS updates and ensuring that antivirus programs are properly configured and maintained.

Question 21

What’s the effect and how do you solve insufficient bandwidth?

Answer 21

Slow network.

Upgrade existing NICs, improve NTM from WiFi to wired and use 10/100/1000 Mbps equipment.

Question 22

What’s the effect and how do you solve DNS errors?

Answer 22

This is a result of URLs not being able to be converted to IP addresses probably and is usually a result of user error or the DNS servers have failed.

You could try to check the URL again to ensure there are no user errors.

Question 23

What does a domain controller refer to?

Answer 23

Network Operating System (NOS)

Question 24

What are some tasks that come under network maintenance?

Answer 24

• Backing up data and such as servers (using RAIDs)
• Installing antivirus software, firewalls etc.
• Ensuring that drivers for network-related software such as servers are up to date.

Question 25

Explain and contrast the different components you might find in a SOHO and Large Scale Network.

Answer 25

• Different forms of NTM depending on the number of users and bandwidth needed.
• Routers, modems, switches
• Different forms of servers. Where a SOHO may use a single computer for a file sharing/print server, the large scale network would have multiple dedicated to the job and many more such as application servers.

Question 26

Briefly explain the purpose of having a network preventative maintenance plan.

Answer 26

The purpose of this is so that you ensure that the network is running efficiently and effectively as possible without running the risk of compromises to data or service loss.

Question 27

What tasks might be included as part of a network’s preventative maintenance plan?

Answer 27

Some tasks include:

• Regularly checking physical security
• Backing up
• Antivirus software
• Checking cables
• Running benchmarks for software/hardware
• Testing cables
• Changing passwords

Question 28

Explain an efficient and effective method of backing up network data.

Answer 28

You can do a full backup one day, and incremental/differential leading up to that day.

You could also backup onto a cloud, or duplicate your drives/server using a RAID.

Question 29

Give an example of a network-related client problem and suggest a suitable solution to the problem.

Answer 29

Someone is having issues with connecting a to a network.
Reasons for this occurring could be that there are permissions set on the network which don’t allow for the user to connect.
The way to resolve this would be to contact the network administrator.

Question 30

If a ransomware attack does succeed, what can a user do to minimise the impact of the attack?

Answer 30

To encrypt and protect all other files to prevent further ransomware attacks.

Question 31

Identify an issue with the misuse of smart home voice assistants, and suggest a solution.

Answer 31

Someone could impersonate or record the voice used to access the door.

A way to solve this would be to include a secondary security solution, such as a pin code or key.

Question 32

How can an antivirus program deal with malware?

Answer 32

It can quarantine or delete the file.

Question 33

What’s one activity that’s USUALLY PERMITTED in an internet conditions of use policy?

Answer 33

Accessing company emails.

Question 34

What’s one activity that’s USUALLY NOT PERMITTED in an internet conditions of use policy?

Answer 34

Playing games, watching YouTube, online gambling.

Question 35

How can admins on a network check to see if users are/aren’t following policies?

Answer 35

Check server/proxy logs.

Question 36

What’s an example of the type of vulnerability that hackers will look for?

Answer 36

Loopholes, easy access point of the website/firewall.