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. CDP is running between two CK devices. What information is supplied by CDP?
VTP will allow switches to share VLAN configuration information
Device Identifiers - Capabilities list - Platform
Hosts use a logical bus topology
It will prevent segment 1's broadcasts from getting to segment 2.

2. 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?
Encapsulations PPP and authentication CHAP
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
To allow remote management of the switch.
Transport

3. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
All switch and bridge ports are in either the forwarding or blocking state.
Device Identifiers - Capabilities list - Platform
802.3ab and 802.3z
Network

4. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
The switch will forward the frame to a specific port
It will prevent segment 1's broadcasts from getting to segment 2.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
The network layer

5. What kind of cable should be used to establish a trunked line between two Catalyst switches?
ARP and ICMP
A cross-over cable
Information about a route should never be sent back in the direction from which the original update came.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

6. As a Certkiller trainee you are required to set the default gateway on a Cisco switch to the IP address of 192.168.1.115. Which IOS command should you use?
An electrical pulse indicates that the collision has cleared.
A cross-over cable
CertK Switch(config)# ip default-gateway 192.168.1.115
It will prevent segment 1's broadcasts from getting to segment 2.

7. The LAN needs are expanding at the CK corporate office - which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the CK network. Which of the following are layer 1 devices that you can use?
TCP
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.
A hub and A repeater.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

8. 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?
The port is experiencing errors
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.
STP
Show cdp neighbor detail

9. What are two characteristics of 'store and forward' switching?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Buffering - Cut-through - and Congestion avoidance
Auto - Desirable - and On
To prevent switching loops in networks with redundant switched paths.

10. Which two of the following values does STP take into consideration when it elects the root bridge?
Switches increase the number of collision domains in the network.
This is an Ethernet port operating at half duplex
The Bridgeg ID and The bridge priority
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

11. Which of the protocols below use TCP at the transport layer?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
SMTP - FTP - HTTP - and HTTPS
The switch will forward the frame to a specific port
Configure the switch so that it has lower priority than other switches in the network

12. Split horizon has been enabled within the Certkiller routed network. Which one of the following statements best explains the split horizon rule?
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.
Certkiller B > trace
Information about a route should never be sent back in the direction from which the original update came.
Congestion avoidance - Windowing and Buffering

13. An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location?
Device Identifiers - Capabilities list - Platform
Hosts use a logical bus topology
Switches - Bridges - and Routers
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.

14. 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?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Increased latency and Filtering of all frame errors
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.
Source Port - Acknowledgment Number - and Window

15. 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?
The network layer
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Configure the switch so that it has lower priority than other switches in the network

16. You are the administrator of the Certkiller LAN and you have been reviewing error logs of networking devices and notice a large number of errors associated with several MAC addresses. You suspect that some of the errors are being generated by the rou
The Bridgeg ID and The bridge priority
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.
Show arp and Show interface
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.

17. 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?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
A broadcast address will never be the source address of a frame
Telnet and FTP
CertK Switch(config)# ip default-gateway 192.168.1.115

18. Which of the following correctly describe steps in the OSI date encapsulation process?
The interfaces must be configured for NAT.
The Bridgeg ID and The bridge priority
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
The transport layer divides a data stream into segments and adds reliability and flow control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.

19. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
Auto - On - and Desirable
802.1Q and ISL
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
The transport layer divides a data stream into segments and adds reliability and flow control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.

20. Which protocol uses TCP port 443 at layer 4?
To prevent switching loops in networks with redundant switched paths.
HTTPS
The network layer
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

21. 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?
VTP
Increased latency and Filtering of all frame errors
Transport
Buffering - Cut-through - and Congestion avoidance

22. 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?
Network
VTP
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.
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

23. Certkiller users have noticed extremely slow network performance - intermittent connectivity - and connection losses. After entering the 'show interfaces' command - you notice that the Ethernet interface is configured as 100 Mbps full-duplex and that
Certkiller B > trace
Increased latency and Filtering of all frame errors
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Duplex mismatch

24. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
VTP will allow switches to share VLAN configuration information
Layer 4
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

25. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
802.1Q and ISL
VTP will allow switches to share VLAN configuration information
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.
Path selections and Packet switching.

26. Which of the following are true of Ethernet technology?
Layer 3
Hosts use a logical bus topology
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Data link

27. 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
The transport layer divides a data stream into segments and adds reliability and flow control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
Layer 4
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Show cdp neighbor detail

28. The Certkiller LAN is upgrading all devices to operate in full duplex. Which statement is true about full-duplex Ethernet in comparison to half-duplex Ethernet?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Configure the switch so that it has lower priority than other switches in the network
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.
Auto - On - and Desirable

29. 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

30. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Application
This is an Ethernet port operating at half duplex
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Encapsulations PPP and authentication CHAP

31. The Certkiller network administrator needs to a switch named CK1 to become the root bridge for a redundant path switched network. What can be done to ensure that CK1 will always assume the role as the root bridge?
Sequence number - Window size - and Acknowledgment number
Configure the switch so that it has lower priority than other switches in the network
The system is malfunctioning.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

32. Which OSI layer header contains the address of a destination host that is on another network?
Network
A hub and A repeater.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
SMTP FTP and HTTP

33. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
Certkiller B > trace
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.
The network layer
In an improperly implemented redundant topology

34. With regard to Ethernet media access methods - which of the following are true?
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.
Layer 4
HTTPS
Auto - On - and Desirable

35. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Packet switching - Packet filtering and Internetwork communication.
Path selections and Packet switching.
VTP
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.

36. A network administrator needs to force a high-performance switch that is located in the MDF to become the root bridge for a redundant path switched network. What can be done to ensure that this switch assumes the role of the Root Bridge?
Data link
Configure the switch so that it has a lower priority than other switches in the network.
Network
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

37. The Certkiller network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test?
The network layer
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
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.
ARP and ICMP

38. Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?
Layer 4
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
802.1Q and ISL
Port security

39. As a network Admin - you will need to decide on the appropriate network devices to use. Which of the following correctly describes the roles of the devices in a WAN?
It is used to prevent switching loops in networks with redundant switched routes.
Transport
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.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

40. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
Serial0/1 is down - line protocol is down
Network
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
VTP will allow switches to share VLAN configuration information

41. While troubleshooting an issue in the Certkiller LAN you notice that a network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement - What is known about the network interface port?
To prevent switching loops in networks with redundant switched paths.
Source Port - Acknowledgment Number - and Window
This is an Ethernet port operating at half duplex
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

42. The CK network administrator needs to determine what LAN devices to install on the CK network. What are two advantages of using Layer 2 Ethernet switches over hubs?
The transport layer divides a data stream into segments and adds reliability and flow control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
Fiber optic cable.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Decrease the window size.

43. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
Increased latency and Filtering of all frame errors
An additional broadcast domain will be created.
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.
It operates without collisions and It provides faster data transfer

44. 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)
100 meters
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
HTTPS
Show cdp neighbor detail

45. Network equipment supporting the use of flow control mechanisms has been recently installed in the CK network. What is the purpose of flow control in a data network?
CertK Switch(config)# ip default-gateway 192.168.1.115
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
Device Identifiers - Capabilities list - Platform
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.

46. 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?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
To allow remote management of the switch.
Configure the switch so that it has lower priority than other switches in the network
Decrease the window size.

47. 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?
Serial0/1 is down - line protocol is down
ARP and ICMP
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.
The network layer

48. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
Switches - Bridges - and Routers
Transport
Fiber optic cable.
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.

49. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Auto - Desirable - and On
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
The switch will forward the frame to a specific port

50. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
Increased latency and Filtering of all frame errors
Source Port - Acknowledgment Number - and Window
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.
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.