Test your basic knowledge |

CCNA Hard

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
It is used to prevent switching loops in networks with redundant switched routes.
Switches increase the number of collision domains in the network.
Certkiller B > trace

2. Which of the following devices can the Certkiller network administrator use to segment the LAN?
Switches - Bridges - and Routers
Switches increase the number of collision domains in the network.
100 meters
Show cdp neighbor detail

3. While troubleshooting a connectivity problem - the Certkiller network administrator notices that a port status LED on a Cisco Catalyst Series switch is alternating between green and amber. Which condition could this indicate?
Transport
Congestion avoidance - Windowing and Buffering
SMTP FTP and HTTP
The port is experiencing errors

4. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
The sequence number in the TCP header.
Layer 4
STP
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

5. The Certkiller corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

6. By default - which of the following factors determines the spanning-tree path cost?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Buffering - Cut-through - and Congestion avoidance
Application
It is the sum of the costs based on bandwidth

7. A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
Telnet and FTP
VTP
SMTP - FTP - HTTP - and HTTPS
Decrease the window size.

8. Both bridges are switches are being used throughout the CK LAN. Which of the following statements are true regarding bridges and switches in this network?
To prevent switching loops in networks with redundant switched paths.
The network layer
Layer 4
Switches usually have a higher number of ports then most bridges - Both bridges and switches forward Layer 2 broadcasts and Both bridges and switches make forwarding decisions based on Layer 2 addresses.

9. Some of the older Certkiller switches store the entire frame before forwarding it to the destination. What are two effects on network performance of configuring a switch to do this?
Increased latency and Filtering of all frame errors
Layer 3
Buffering - Cut-through - and Congestion avoidance
Data link

10. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
Network
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
The sequence number in the TCP header.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

11. The corporate head office of Certkiller has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence - wh
A hub and A repeater.
The switch must be reachable through a port connected to its management VLAN. and The switch must be configured with an IP address - subnet mask - and default gateway.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
The Bridgeg ID and The bridge priority

12. You need to configure two Certkiller switches to exchange VLAN information. Which protocol provides a method of sharing VLAN configuration information between these two switches?
Layer 3
VTP
Show cdp neighbor detail
802.3ab and 802.3z

13. Certkiller is installing IP phones in a new office. The phones and office computers connect to the same device. To ensure maximum throughout for the phone data sessions - the company needs to make sure that the phone traffic is on a different network
VLAN and Swtich
VTP
Application
Packet switching - Packet filtering and Internetwork communication.

14. Assuming you build networks to exact specifications - What is the recommended maximum length a 10BaseT cable can be before it has to be segmented or repeated?
100 meters
It provides a mechanism for the receiver to control the transmission speed - You have just installed a new web server on the Certkiller network. You are required to ensure that the web server is accessible from the Internet. The network uses private
HTTPS
The network layer

15. As the Certkiller network administrator - you are required to have a firmunderstanding of the OSI model. Why does the data communication industry use the layered OSI reference model?
It encourages industry standardization by defining what functions occur at each layer of the model and It divides the network communication process into smaller and simpler components; thus aiding component development - design and troubleshooting
In an improperly implemented redundant topology
The network layer
Configure the switch so that it has a lower priority than other switches in the network.

16. Which of the following are true of Ethernet technology?
TCP
Hosts use a logical bus topology
Auto - Desirable - and On
Device Identifiers - Capabilities list - Platform

17. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
TCP
CertK Switch(config)# ip default-gateway 192.168.1.115
The interfaces must be configured for NAT.
Layer 3

18. when files are transferred between a host and an FTP server - the data is divided into smaller pieces of transmission. As these pieces arrive at the destination host they must be reassembled to reconstruct the original file. What provides for the rea
Serial0/1 is down - line protocol is down
The sequence number in the TCP header.
In an improperly implemented redundant topology
Information about a route should never be sent back in the direction from which the original update came.

19. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
Decrease the window size.
Transport
The host network card and the switch port must be capable of operating in full-duplex mode. - There are no collisions in full-duplex mode. and A dedicated switch port is required for each full-duplex node.
SMTP FTP and HTTP

20. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
VLAN and Swtich
To obtain the IP address of a connected device in order to telnet to the device - To verify Layer 2 connectivity between two devices when Layer 3 fails.
Path selections and Packet switching.
VTP will allow switches to share VLAN configuration information

21. You have set up an Internet based FTP server - where people can upload and download files. In terms of the OSI model - What is the highest layer used during the FTP sessions.
Telnet and FTP
Switches increase the number of collision domains in the network.
It provides a mechanism for the receiver to control the transmission speed - You have just installed a new web server on the Certkiller network. You are required to ensure that the web server is accessible from the Internet. The network uses private
Application

22. With regard to Ethernet media access methods - which of the following are true?
It operates without collisions and It provides faster data transfer
A device listens and waits until the media is not busy before transmitting. and All devices on an Ethernet segment see data that passes on the network medium.
Data link
802.3ab and 802.3z

23. A Certkiller technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the sh
Configure the switch so that it has lower priority than other switches in the network
Data link
Source Port - Acknowledgment Number - and Window
Port security

24. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
Serial0/1 is down - line protocol is down
Sequence number - Window size - and Acknowledgment number
To allow remote management of the switch.
The network layer

25. Which IOS user EXEC command will allow a network technician to determine which router in the path to an unreachable network host should be examined more closely for the cause of the network failure?
Certkiller B > trace
An electrical pulse indicates that the collision has cleared.
The switch must be reachable through a port connected to its management VLAN. and The switch must be configured with an IP address - subnet mask - and default gateway.
MAC Address and Bridge Priority

26. In a switched LAN network - What is the Spanning-Tree algorithm used for?
It is used to prevent switching loops in networks with redundant switched routes.
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
It is the sum of the costs based on bandwidth

27. Which two of the following values does STP take into consideration when it elects the root bridge?
A broadcast address will never be the source address of a frame
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
The Bridgeg ID and The bridge priority
Path selections and Packet switching.

28. Why is full-duplex Ethernet superior to its single-duplex counterpart?
It is the sum of the costs based on bandwidth
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
It operates without collisions and It provides faster data transfer
Hosts use a logical bus topology

29. What is the purpose of the spanning-tree algorithm in a switched LAN?
To prevent switching loops in networks with redundant switched paths.
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. and After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to
Data link
Auto - Desirable - and On

30. What kind of cable should be used to establish a trunked line between two Catalyst switches?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
A cross-over cable
Switches - Bridges - and Routers
SMTP - FTP - HTTP - and HTTPS

31. As a CCNA candidate - you will be expected to know the OSI model very well. Which of the following are associated with the application layer (layer 7) of the OSI model?
802.1Q and ISL
Auto - On - and Desirable
Show cdp neighbor detail
Telnet and FTP

32. The Certkiller network administrator wants to use a router named CK1 to segment the local network. What are some of the advantages of using CK1 to segment the network? (Choose two)
It will prevent segment 1's broadcasts from getting to segment 2.
In an improperly implemented redundant topology
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Network

33. You need to perform some initial configuration tasks on a new Certkiller switch. What is the purpose of assigning an IP address to a switch?
The switch must be reachable through a port connected to its management VLAN. and The switch must be configured with an IP address - subnet mask - and default gateway.
To allow remote management of the switch.
It is used to prevent switching loops in networks with redundant switched routes.
Duplex mismatch

34. Which three of the protocols below belong to the application layer? (Select three answer choices)
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
HTTPS - SMTP - and TFTP
Auto - On - and Desirable
802.3ab and 802.3z

35. A host computer has been correctly configured with a static IP address - but the default gateway is incorrectly set. Which layer of the OSI model will be first effected by this configuration error?
SMTP - FTP - HTTP - and HTTPS
Layer 3
Decrease the window size.
Duplex mismatch

36. Which of the following services use TCP?
The switch that will share the VLAN information must be in the VTP Server mode. -The switches must be in the same VTP domain. - The switches must be configured to use the same STP version. and The switches must be connected over VLAN trunks.
It encourages industry standardization by defining what functions occur at each layer of the model and It divides the network communication process into smaller and simpler components; thus aiding component development - design and troubleshooting
SMTP FTP and HTTP
The port is experiencing errors

37. You want to influence the root bridge selection within the Certkiller LAN. Which two values are used by spanning tree protocol to elect a root bridge? (Choose two.)
MAC Address and Bridge Priority
The system is malfunctioning.
A cross-over cable
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

38. Which of the following can lead to the contribution of LAN traffic congestion?
802.3ab and 802.3z
STP
The switch must be reachable through a port connected to its management VLAN. and The switch must be configured with an IP address - subnet mask - and default gateway.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

39. You want to upgrade the Certkiller LAN so that all ports operate in full duplex mode. Which statement is true about full-duplex Ethernet when comparing to half-duplex Ethernet?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Network
Fiber optic cable.
The switch will forward the frame to a specific port

40. On a half-duplex Ethernet LAN - two hosts attempt to send data simultaneously - resulting in a collision. Following this collision - what will the hosts do?
A jam signal informs all devices that a collision occurred. - The devices that are involved in the collision stops transmitting for a short time. and The collision invokes a random back-off algorithm.
An additional broadcast domain will be created.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
An electrical pulse indicates that the collision has cleared.

41. Which of the following are types of flow control?
Device Identifiers - Capabilities list - Platform
Buffering - Cut-through - and Congestion avoidance
It is used to prevent switching loops in networks with redundant switched routes.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.

42. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Data link
Configure the switch so that it has lower priority than other switches in the network
Transport
Encapsulations PPP and authentication CHAP

43. Which of the following are spanning tree port states?
Switches increase the number of collision domains in the network.
VTP
Learning - Listening - and Forwarding
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

44. Which protocol uses TCP port 443 at layer 4?
HTTPS
Port security
Increased latency and Filtering of all frame errors
Data link

45. While troubleshooting a connectivity problem on the network - you issure the ping command from your PC command prompt - but the output shows 'request times out' At which OSI layer is this problem associated with?
Configure the switch so that it has a lower priority than other switches in the network.
Data link
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
The network layer

46. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
The network layer
802.1Q and ISL
It operates without collisions and It provides faster data transfer
All switch and bridge ports are in either the forwarding or blocking state.

47. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
It will prevent segment 1's broadcasts from getting to segment 2.
Increased latency and Filtering of all frame errors
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

48. A new switch is installed in the Certkiller network. This switch is to be configured so that VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network. Which of the conditions below have to be met in o
Auto - On - and Desirable
The switch that will share the VLAN information must be in the VTP Server mode. -The switches must be in the same VTP domain. - The switches must be configured to use the same STP version. and The switches must be connected over VLAN trunks.
To prevent switching loops in networks with redundant switched paths.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

49. CDP is running between two CK devices. What information is supplied by CDP?
It is the sum of the costs based on bandwidth
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Device Identifiers - Capabilities list - Platform
Duplex mismatch

50. Although TCP segments are similar to UDP segments - TCP packets contains some additional fields. Which of the following are found in a TCP header - but not in a UDP header?
Sequence number - Window size - and Acknowledgment number
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. and After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to
Switches - Bridges - and Routers
Data link