netcad exam module 13-16

Netcad exam answer module 13-16

1. What is the purpose of a DMZ?

It provides secure connectivity for clients that connect to the internal network through a wireless LAN.

It creates an encrypted and authenticated tunnel for remote hosts to access the internal network.

It allows external hosts to access specific company servers while maintaining the security restrictions for the internal network.

It analyzes traffic for intrusion attempts and sends reports to management stations.

2. An administrator wants to configure a router so that users on the outside network can only establish HTTP connections to the internal web site. Which feature would the administrator configure to accomplish this?

PAT

NAT overload

port forwarding

static NAT

3. What specialized network device is responsible for permitting or blocking traffic between networks?

access point

switch

firewall

bridge

4. Why should WEP not be used in wireless networks today?

its lack of support

its age

easily crackable

its lack of encryption

its use of clear text passwords

5. What happens when a wireless access point is configured to stop broadcasting the SSID?

Computer access to the wireless access point is restricted.

The identity of the network is freely broadcast.

The network is invisible to those who are unaware of the SSID.

Signals are prevented from transmission outside the boundaries of the local network.

6. Which type of attack involves an attacker using a powerful computer to try a large number of possible passwords in rapid succession to gain access to a system?

phishing

pretexting

brute force

DDoS

7. What is a characteristic of a computer worm?

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

malicious software that copies itself into other executable programs

8. Which three attacks exploit human behavior? (Choose three.)

malware

brute force

vishing

pretexting

phishing

zombies

9. Which type of attack exploits human behavior to gain confidential information?

virus

spyware

denial of service

social engineering

10. Which statement accurately characterizes the evolution of threats to network security?

Internet architects planned for network security from the beginning.

Early Internet users often engaged in activities that would harm other users.

Internal threats can cause even greater damage than external threats.

Threats have become less sophisticated while the technical knowledge needed by an attacker has grown.

11. Which three steps must be completed to manually connect an Android or IOS device to a secured wireless network? (Choose three.)

Set the IP address.

Activate the Bluetooth antenna.

Input the authentication password.

Enter the network SSID.

Choose the correct security type.

Change the MAC address.

12. What technology allows users to access data anywhere and at any time?

micromarketing

virtualization

Cloud computing

data analytics

13. Which cloud computing opportunity would provide the use of network hardware such as routers and switches for a particular company?

browser as a service (BaaS)

software as a service (SaaS)

infrastructure as a service (IaaS)

wireless as a service (WaaS)

14. Which type of device provides an Internet connection through the use of a phone jack?

Wi-Fi AP

satellite modem

DSL modem

cable modem

15. What are two types of wired high-speed Internet connections? (Choose two.)

dial-up

cellular

DSL

cable

satellite

16. Which feature is characteristic of MAC filtering in wireless networks?

It restricts computer access to a wireless network.

It allows only authorized users to detect the network.

It is configured on the computer rather than on the router.

It encrypts data that is transmitted on a wireless network.

17. What wireless router configuration would stop outsiders from using your home network?

network name

router location

IP address

encryption

18. What two IEEE 802.11 wireless standards operate only in the 5 GHz range? (Choose two.)

802.11ad

802.11g

802.11n

802.11b

802.11ac

802.11a

19. Which wireless RF band do IEEE 802.11b/g devices use?

5 GHz

900 MHz

2.4 GHz

60 GHz

20. What are three advantages of wireless over wired LAN technology? (Choose three.)

higher level of security

ease of installation

longer transmission distance

ease of expansion

lower on-going costs

21. A student tells a teacher that many junk emails are appearing on a new personal laptop. What is a possible cause of the problem?

The school email server is not functioning properly.

The student has spent too much time surfing the web.

The new laptop does not have antivirus or anti-spam software installed.

The laptop needs to be updated to the latest OS version.

22. What is a common countermeasure for Trojan horses?

authentication

antivirus software

firewall

encryption

23. Which two business and technical challenges does implementing virtualization within a data center help businesses to overcome? (Choose two.)

virus and spyware attacks

physical footprint

power and air conditioning

operating system license requirements

server hardware needs

24. What is CSMA/CA on a network?

an access method that is used by wired Ethernet technology to avoid collisions

an access method that is used by any technology that has excessive collisions

an access method that is used by wireless technology to avoid duplicate SSIDs

an access method that is used by wireless technology to avoid collisions

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