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

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

1
Identify three techniques used in social engineering. (Choose three.)
#vishing
#phishing
#pretexting

2
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?
#SYN flooding

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?
#Trojan horse

4
What is a major characteristic of a Worm?
#exploits vulnerabilities with the intent of propagating itself across a network

5
During a pretexting event, how is a target typically contacted?
#by phone

6
What term is used to describe a dedicated hardware device that provides firewall services?
#appliance-based

7

Refer to the graphic. In the Linksys Security menu, what does the SPI Firewall Protection option Enabled provide?
#It requires that packets coming into the router be responses to internal host requests.

8
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.
#Disable the wireless network when a vulnerability analysis is being performed.

9
What environment would be best suited for a two-firewall network design?
#a large corporate environment

10
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.

11
Which two statements are true concerning anti-spam software? (Choose two.)
#When anti-spam software is loaded, legitimate e-mail may be classified as spam by mistake.
#Even with anti-spam software installed, users should be careful when opening e-mail attachments.

12
What type of advertising is typically annoying and associated with a specific website that is being visited?
#popups

13
To which part of the network does the wireless access point part of a Linksys integrated router connect?
#internal

14
What statement is true about security configuration on a Linksys integrated router?
#Internet access can be denied for specific days and times.

15
Which abbreviation refers to an area of the network that is accessible by both internal, or trusted, as well as external, or untrusted, host devices?
#DMZ

16
Which statement is true regarding anti-virus software?
#Only after a virus is known can an anti-virus update be created for it.

17
What is one function that is provided by a vulnerability analysis tool?
#It identifies missing security updates on a computer.

18
What part of the security policy states what applications and usages are permitted or denied?
#acceptable use

19
What best practice relates to wireless access point security?
#a change of the default IP address

20
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?
#spam

Or

1	Identify three techniques used in social engineering. (Choose three.) fishing vishing phishing spamming pretexting junk mailing

2	During a pretexting event, how is a target typically contacted? by e-mail by phone in person through another person

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	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

5	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

6	What type of advertising is typically annoying and associated with a specific website that is being visited? adware popups spyware tracking cookies

7	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

8	What part of the security policy states what applications and usages are permitted or denied? identification and authentication remote access acceptable use incident handling

9	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.

10

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.

11	What term is used to describe a dedicated hardware device that provides firewall services? server-based integrated personal appliance-based

12	Which abbreviation 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

13

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.

14	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

15	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.

16	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 which requires secure VPN access a small business environment which is experiencing continuing DDoS attacks

17

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.

18

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.

19	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

20

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.

DHomesb Chapter 7 - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)

DHomesb Chapter 7 - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)

1
Complete the following sentence: WEP is used to ______ , and EAP is used to _____ wireless networks.
#encrypt; authenticate users on

2
What are three advantages of wireless over wired technology? (Choose three.)
#anytime, anywhere connectivity
#ease of adding additional devices

3
A technician has been asked to provide wireless connectivity to the wired Ethernet network of a building. Which three factors affect the number of access points needed? (Choose three.)
#the size of the building
#the number of solid interior walls in the building
#the presence of microwave ovens in several offices

4
Which statement is true concerning wireless bridges?
#connects two networks with a wireless link

5


Refer to the graphic. In the Wireless menu option of a Linksys integrated router, what does the Network Mode option Mixed mean?
#The router supports 802.11b, 802.11g, and 802.11n devices.

6
Why is IEEE 802.11 wireless technology able to transmit further distances than Bluetooth technology?
#has higher power output

7
Which statement is true concerning an ad-hoc wireless network?
#created by connecting wireless clients in a peer-to-peer network

8
What is the difference between using open authentication and pre-shared keys?
#Pre-shared keys require an encrypted secret word. Open authentication does not require a secret word.

9
Which statement is true about open authentication when it is enabled on an access point?
#requires no authentication

10
Which WLAN component is commonly referred to as an STA?
#wireless client

11
Which two statements about a service set identifier (SSID) are true? (Choose two.)
#tells a wireless device to which WLAN it belongs
#all wireless devices on the same WLAN must have the same SSID

12
Why is security so important in wireless networks?
#Wireless networks broadcast data over a medium that allows easy access.

13
What term describes the encoding of wireless data to prevent intercepted data from being read by a hacker?
#encryption

14
What type of authentication do most access points use by default?
#Open

15
What are two authentication methods that an access point could use? (Choose two.)
#EAP
#pre-shared keys

16
What are two benefits of wireless networking over wired networking? (Choose two.)
#mobility
#reduced installation time

17


Refer to the graphic. In the Wireless menu of a Linksys integrated router, what configuration option allows the presence of the access point to be known to nearby clients?
#SSID Broadcast

18
What are the two WEP key lengths? (Choose two.)
#64 bit
#128 bit

19
Which two statements characterize wireless network security? (Choose two.)
#With SSID broadcast disabled, an attacker must know the SSID to connect.
#Using the default IP address on an access point makes hacking easier.

20
What does the Wi-Fi logo indicate about a wireless device?
#The device is interoperable with other devices of the same standard that also display the Wi-Fi logo.

21
What access-point feature allows a network administrator to define what type of data can enter the wireless network?
#traffic filtering

Or

1	Why is IEEE 802.11 wireless technology able to transmit further distances than Bluetooth technology? transmits at much lower frequencies has higher power output transmits at much higher frequencies uses better encryption methods

2	What are three advantages of wireless over wired technology? (Choose three.) more secure longer range anytime, anywhere connectivity easy and inexpensive to install ease of using licensed air space ease of adding additional devices

3	What are two benefits of wireless networking over wired networking? (Choose two.) speed security mobility reduced installation time allows users to share more resources not susceptible to interference from other devices

4

A technician has been asked to provide wireless connectivity to the wired Ethernet network of a building. Which three factors affect the number of access points needed? (Choose three.) the size of the building the number of solid interior walls in the building the presence of microwave ovens in several offices the encryption method used on the wireless network the use of both Windows and Appletalk operating systems the use of shortwave or infrared on the AP

5	Why is security so important in wireless networks? Wireless networks are typically slower than wired networks. Televisions and other devices can interfere with wireless signals. Wireless networks broadcast data over a medium that allows easy access. Environmental factors such as thunderstorms can affect wireless networks.

6	What does the Wi-Fi logo indicate about a wireless device? IEEE has approved the device. The device is interoperable with all other wireless standards. The device is interoperable with other devices of the same standard that also display the Wi-Fi logo. The device is backwards compatible with all previous wireless standards.

7	Which statement is true concerning wireless bridges? connects two networks with a wireless link stationary device that connects to a wireless LAN allows wireless clients to connect to a wired network increases the strength of a wireless signal

8	Which WLAN component is commonly referred to as an STA? cell antenna access point wireless bridge wireless client

9	Which statement is true concerning an ad-hoc wireless network? created by connecting wireless clients in a peer-to-peer network created by connecting wireless clients to a single, centralized AP created by connecting multiple wireless basic service sets through a distribution system created by connecting wireless clients to a wired network using an ISR

10	Refer to the graphic. In the Wireless menu option of a Linksys integrated router, what does the Network Mode option Mixed mean? The router supports encryption and authentication. The router supports both wired and wireless connections. The router supports 802.11b, 802.11g, and 802.11n devices. The router supports connectivity through infrared and radio frequencies.

11	Refer to the graphic. In the Wireless menu of a Linksys integrated router, what configuration option allows the presence of the access point to be known to nearby clients? Network Mode Network Name (SSID) Radio Band Wide Channel Standard Channel SSID Broadcast

12	Which two statements about a service set identifier (SSID) are true? (Choose two.) tells a wireless device to which WLAN it belongs consists of a 32-character string and is not case sensitive responsible for determining the signal strength all wireless devices on the same WLAN must have the same SSID used to encrypt data sent across the wireless network

13

Which two statements characterize wireless network security? (Choose two.) Wireless networks offer the same security features as wired networks. Wardriving enhances security of wireless networks. With SSID broadcast disabled, an attacker must know the SSID to connect. Using the default IP address on an access point makes hacking easier. An attacker needs physical access to at least one network device to launch an attack.

14	What type of authentication do most access points use by default? Open PSK WEP EAP

15	Which statement is true about open authentication when it is enabled on an access point? requires no authentication uses a 64-bit encryption algorithm requires the use of an authentication server requires a mutually agreed upon password

16	What are two authentication methods that an access point could use? (Choose two.) WEP WPA EAP ASCII pre-shared keys

17

What is the difference between using open authentication and pre-shared keys? Open authentication requires a password. Pre-shared keys do not require a password. Open authentication is used with wireless networks. Pre-shared keys are used with wired networks. Pre-shared keys require an encrypted secret word. Open authentication does not require a secret word. Pre-shared keys require a MAC address programmed into the access point. Open authentication does not require this programming.

18	What term describes the encoding of wireless data to prevent intercepted data from being read by a hacker? address filtering authentication broadcasting encryption passphrase encoding

19	What access-point feature allows a network administrator to define what type of data can enter the wireless network? encryption hacking block traffic filtering MAC address filtering authentication

20	What are the two WEP key lengths? (Choose two.) 8 bit 16 bit 32 bit 64 bit 128 bit

21	Complete the following sentence: WEP is used to ______ , and EAP is used to _____ wireless networks. encrypt; authenticate users on filter traffic; select the operating frequency for identify the wireless network; compress data on create the smallest wireless network; limit the number of users on

DHomesb Chapter 6 - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)

DHomesb Chapter 6 - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)

1
What is the correct order of the layers of the OSI reference model, starting at the lowest layer and working up the model?
#physical, data link, network, transport, session, presentation, application

2
What three items are contained in an Ethernet header and trailer? (Choose three.)
#source MAC address
#destination MAC address
#error-checking information

3
Which protocols are TCP/IP application layer protocols? (Choose two.)
#FTP
#SMTP

4


Refer to the graphic. Which protocol is used to access this website?
#HTTP

5
What is an advantage of the use of layers in the OSI reference model?
#It prevents changes in one layer from affecting other layers.

6
What term is used to describe how TCP/IP protocols are layered and interact to format, address, and transmit information across a network?
#protocol stack

7
Whenever e-mail clients send letters, what device is used to translate the domain names into their associated IP addresses?
#DNS server

8
An Internet server is running both FTP and HTTP services. How does the server know which of these applications should handle an incoming segment?
#The segment destination port number identifies the application that should handle it.

9
You are creating a network-based video game. What influences your decision about which transport protocol to use for the application?
#UDP will not disrupt the game to retransmit dropped packets.

10
Which port number is used by SMTP?
#25

11
Which application is most likely used to translate www.cisco.com to 198.133.219.25?
#DNS

12
Which of the following are layers of the TCP/IP model? (Choose three.)
#Application
#Internet
#Network Access

13
Which protocol is used by e-mail servers to communicate with each other?
#SMTP

14
What client software enables logged in users to communicate with other logged in users in real time?
#instant messaging

15
What type of server would use IMAP?
#e-mail

16
What resolves a website URL to an IP address?
#DNS server

17
What information is contained in an IP header?
#source and destination IP addresses

18
Which protocol is used by FTP to transfer files over the Internet?
#TCP

19
A client has decoded a frame and started the de-encapsulation process. In which order does the de-encapsulation process occur?

1) remove Ethernet header and trailer
2) remove IP header
3) remove TCP header
4) pass data to the application



20
A device receives an Ethernet frame and recognizes the MAC address as its own. What does the device do to the message to get to the encapsulated data?
#removes the Ethernet header and trailer

21
Cabling issues are associated with which OSI layer?
#1

22
A network client in a corporate environment reboots. Which type of server would most likely be used first?
#DNS

Or

1	What type of server would use IMAP? DNS DHCP e-mail FTP Telnet web

2	A network client in a corporate environment reboots. Which type of server would most likely be used first? DNS DHCP e-mail FTP Telnet web

3	Which protocol is used by FTP to transfer files over the Internet? TCP SMTP UDP SNMP

4	Which protocols are TCP/IP application layer protocols? (Choose two.) UDP FTP IP SMTP TCP

5	Which of the following are layers of the TCP/IP model? (Choose three.) Application Physical Internet Network Access Presentation

6

You are creating a network-based video game. What influences your decision about which transport protocol to use for the application? UDP will not disrupt the game to retransmit dropped packets. TCP provides extra acknowledgements that will ensure smooth video delivery. Both TCP and UDP can be used simultaneously to ensure speed and guaranteed delivery. Both TCP and UDP may slow transmission and disrupt game operation, so no transport protocol should be used.

7	Whenever e-mail clients send letters, what device is used to translate the domain names into their associated IP addresses? Uniform Resource Locator Network redirector server SNMP server DNS server

8	A network administrator needs to allow web pages on the company web server to be accessed securely. What port number is used to request web content to be transmitted using a secure protocol? 53 69 80 443

9	Which port number is used by SMTP? 20 21 25 26 110

10	Which protocol is used by e-mail servers to communicate with each other? FTP HTTP TFTP SMTP POP SNMP

11	A computer user encounters an issue when printing a document. Which application could a computer user use to contact technical support to gain an immediate answer to an issue? blog e-mail web mail instant messaging virtual reality virtualization

12

An Internet server is running both FTP and HTTP services. How does the server know which of these applications should handle an incoming segment? The packet header identifies it as an HTTP or FTP packet. The data in the segment is specially formatted for either HTTP or FTP. The segment destination port number identifies the application that should handle it. The source port number is associated with one of these well known server applications.

13	What term is used to describe how TCP/IP protocols are layered and interact to format, address, and transmit information across a network? protocol hierarchy protocol modeling protocol stack protocol layering

14	What information is contained in an IP header? source and destination IP addresses source and destination MAC addresses only destination IP and MAC addresses both source and destination IP and MAC addresses

15	Cabling issues are associated with which OSI layer? 4 2 1 3

16	A device receives an Ethernet frame and recognizes the MAC address as its own. What does the device do to the message to get to the encapsulated data? removes the IP header removes the TCP header passes data to the application layer removes the Ethernet header and trailer

17

A client has decoded a frame and started the de-encapsulation process. In which order does the de-encapsulation process occur? 1) remove IP header 2) remove Ethernet header and trailer 3) remove TCP header 4) pass data to the application 1) add TCP header to data 2) add an IP header 3) add frame header and trailer 4) encode the frame into bits 1) remove Ethernet header and trailer 2) remove IP header 3) remove TCP header 4) pass data to the application 1) add TCP header to data 2) add Ethernet header and trailer 3) add an IP header 4) encode the frame into bits

18	What is an advantage of the use of layers in the OSI reference model? It breaks network communications into larger parts. It increases complexity. It prevents changes in one layer from affecting other layers. It requires the use of single-vendor equipment for hardware and software communications.

19

What is the correct order of the layers of the OSI reference model, starting at the lowest layer and working up the model? data link, physical, transport, network, presentation, session, application physical, data link, network, session, transport, presentation, application physical, data link, network, transport, presentation, session, application physical, data link, network, transport, session, presentation, application application, session, presentation, transport, data link, network, physical

20	What three items are contained in an Ethernet header and trailer? (Choose three.) source IP address source MAC address destination IP address destination MAC address error-checking information