CCNA Discovery 1 Chapter 8 V4.0 Answers

DHomesb Chapter 8 – CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)

1. A flood of packets with invalid source-IP addresses requests a connection on the network. The server busily tries to respond, resulting in valid requests being ignored. What type of attack occurred?

Trojan horse 

brute force 

ping of death 

SYN flooding

 

2. What environment would be best suited for a two-firewall network design?

a large corporate environment

a home environment with 10 or fewer hosts

a home environment that needs VPN access

a smaller, less congested business environment

 

3. While surfing the Internet, a user notices a box claiming a prize has been won. The user opens the box unaware that a program is being installed. An intruder now accesses the computer and retrieves personal information. What type of attack occurred?

worm

virus

Trojan horse

denial of service

 

4. Which two statements are true concerning anti-spam software? (Choose two.)

Anti-spam software can be loaded on either the end-user PC or the ISP server, but not both.

When anti-spam software is loaded, legitimate e-mail may be classified as spam by mistake.

Installing anti-spam software should be a low priority on the network.

Even with anti-spam software installed, users should be careful when opening e-mail attachments.

Virus warning e-mails that are not identified as spam via anti-spam software should be forwarded to other users immediately.

 

5. What type of advertising is typically annoying and associated with a specific website that is being visited? 

adware

popups

spyware

tracking cookies

 

6. What part of the security policy states what applications and usages are permitted or denied? 

identification and authentication

remote access

acceptable use

incident handling

 

7. To which part of the network does the wireless access point part of a Linksys integrated router connect?

DMZ

external

internal

a network other than the wired network

 

8. Identify three techniques used in social engineering. (Choose three.) 

fishing

vishing

phishing

spamming

pretexting

junk mailing

 

9. What is a widely distributed approach to marketing on the Internet that advertises to as many individual users as possible via IM or e-mail? 

brute force

spam

spyware

tracking cookies

 

10. Which acronym refers to an area of the network that is accessible by both internal, or trusted, as well as external, or untrusted, host devices? 

SPI

DMZ

ISR

ISP

 

11. During a pretexting event, how is a target typically contacted?

by e-mail

by phone

in person

through another person

 

12.

Refer to the graphic. What is the purpose of the Internet Filter option of Filter IDENT (Port 113.  on the Linksys integrated router?

to require a user ID and password to access the router

to prevent outside intruders from attacking the router through the Internet

to require a pre-programmed MAC address or IP address to access the router

to disable tracking of internal IP addresses so they cannot be spoofed by outside devices

 

13. What is a major characteristic of a Worm?

malicious software that copies itself into other executable programs

tricks users into running the infected software

a set of computer instructions that lies dormant until triggered by a specific event

exploits vulnerabilities with the intent of propagating itself across a network

 

14. What term is used to describe a dedicated hardware device that provides firewall services?

server-based

integrated

personal

appliance-based

 

15. What best practice relates to wireless access point security?

activation of a popup stopper

a change of the default IP address

an update in the antivirus software definitions

physically securing the cable between the access point and client

 

16. Which statement is true about port forwarding within a Linksys integrated router?

Only external traffic that is destined for specific internal ports is permitted. All other traffic is denied.

Only external traffic that is destined for specific internal ports is denied. All other traffic is permitted.

Only internal traffic that is destined for specific external ports is permitted. All other traffic is denied.

Only internal traffic that is destined for specific external ports is denied. All other traffic is permitted.

 

17. What statement is true about security configuration on a Linksys integrated router?

A DMZ is not supported.

The router is an example of a server-based firewall.

The router is an example of an application-based firewall.

Internet access can be denied for specific days and times.

 

18. What is one function that is provided by a vulnerability analysis tool?

It provides various views of possible attack paths.

It identifies missing security updates on a computer.

It identifies wireless weak points such as rogue access points.

It identifies all network devices on the network that do not have a firewall installed.

It identifies MAC and IP addresses that have not been authenticated on the network.

 

19. Which statement is true regarding anti-virus software? 

Only e-mail programs need to be protected.

Only hard drives can be protected.

Only after a virus is known can an anti-virus update be created for it.

Only computers with a direct Internet connection need it.

 

20. Many best practices exist for wired and wireless network security. The list below has one item that is not a best practice. Identify the recommendation that is not a best practice for wired and wireless security.

Periodically update anti-virus software.

Be aware of normal network traffic patterns.

Periodically update the host operating system.

Activate the firewall on a Linksys integrated router.

Configure login permissions on the integrated router.

Disable the wireless network when a vulnerability analysis is being performed.

 

21.

Refer to the graphic. In the Linksys Security menu, what does the SPI Firewall Protection option Enabled provide?

It prevents packets based on the application that makes the request.

It allows packets based on approved internal MAC or IP addresses.

It requires that packets coming into the router be responses to internal host requests.

It translates an internal address or group of addresses into an outside, public address.