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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. 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.
VTP will allow switches to share VLAN configuration information
A hub and A repeater.
Application
Path selections and Packet switching.

2. What is the IEEE standard associated with Gigabit Ethernet?
802.3ab and 802.3z
Congestion avoidance - Windowing and Buffering
HTTPS
A hub and A repeater.

3. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
TCP
It operates without collisions and It provides faster data transfer
Configure the switch so that it has lower priority than other switches in the network
802.1Q and ISL

4. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
It is used to prevent switching loops in networks with redundant switched routes.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Certkiller B > trace

5. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
Transport
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
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
An electrical pulse indicates that the collision has cleared.

6. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Telnet and FTP
Hosts use a logical bus topology
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.
Layer 4

7. 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
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Serial0/1 is down - line protocol is down
Congestion avoidance - Windowing and Buffering

8. CDP is running between two CK devices. What information is supplied by CDP?
Device Identifiers - Capabilities list - Platform
Configure the switch so that it has lower priority than other switches in the network
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

9. 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 switch will forward the frame to a specific port
The Bridgeg ID and The bridge priority
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

10. 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
Data link
Layer 4
Layer 4
Application

11. 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?
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
Packet switching - Packet filtering and Internetwork communication.
VTP will allow switches to share VLAN configuration information
Configure the switch so that it has a lower priority than other switches in the network.

12. Which of the following can lead to the contribution of LAN traffic congestion?
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
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.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Device Identifiers - Capabilities list - Platform

13. 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?
SMTP - FTP - HTTP - and HTTPS
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.
VTP will allow switches to share VLAN configuration information
The port is experiencing errors

14. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
802.3ab and 802.3z
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
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
In an improperly implemented redundant topology

15. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
The interfaces must be configured for NAT.
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.
In an improperly implemented redundant topology
A broadcast address will never be the source address of a frame

16. With regard to Ethernet media access methods - which of the following are true?
A broadcast address will never be the source address of a frame
Show arp and Show interface
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.
Auto - Desirable - and On

17. 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
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 operates without collisions and It provides faster data transfer
The switch will forward the frame to a specific port
Learning - Listening - and Forwarding

18. 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?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
ARP and ICMP
Configure the switch so that it has lower priority than other switches in the network
Switches increase the number of collision domains in the network.

19. 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?
Encapsulations PPP and authentication CHAP
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
Port security
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

20. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
VTP will allow switches to share VLAN configuration information
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
Data link
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.

21. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
Physical Layer and Datalink Layer
HTTPS - SMTP - and TFTP
Hosts use a logical bus topology
All switch and bridge ports are in either the forwarding or blocking state.

22. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
Switches - Bridges - and Routers
It is the sum of the costs based on bandwidth
The system is malfunctioning.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

23. 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?
The interfaces must be configured for NAT.
Increased latency and Filtering of all frame errors
A hub and A repeater.
A cross-over cable

24. Both the switches and hubs are being utilized within the CK network. Which of the following is true regarding the use of switches and hubs for the network connectivity in this network?
Switches increase the number of collision domains in the network.
A broadcast address will never be the source address of a frame
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
An electrical pulse indicates that the collision has cleared.

25. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
Congestion avoidance - Windowing and Buffering
The switch will forward the frame to a specific port
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.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

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.
To prevent switching loops in networks with redundant switched paths.
Auto - Desirable - and On
Layer 4

27. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
HTTPS
Configure the switch so that it has a lower priority than other switches in the network.
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.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

28. 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?

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29. 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
Physical Layer and Datalink Layer
HTTPS
The sequence number in the TCP header.
The switch will forward the frame to a specific port

30. 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
SMTP - FTP - HTTP - and HTTPS
Data link
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

31. 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?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Encapsulations PPP and authentication CHAP
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
ARP and ICMP

32. 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?
Application
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.
Packet switching - Packet filtering and Internetwork communication.
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.

33. 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
Physical Layer and Datalink Layer
It operates without collisions and It provides faster data transfer
Duplex mismatch
HTTPS

34. 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?
It operates without collisions and It provides faster data transfer
The port is experiencing errors
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.
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.

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

36. 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 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.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Encapsulations PPP and authentication CHAP
A cross-over cable

37. 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?
VTP
A hub and A repeater.
Application
Decrease the window size.

38. 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
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
Network

39. Which three of the protocols below belong to the application layer? (Select three answer choices)
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
It will prevent segment 1's broadcasts from getting to segment 2.
HTTPS - SMTP - and TFTP
Physical Layer and Datalink Layer

40. 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?
Application
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
Increased latency and Filtering of all frame errors
Learning - Listening - and Forwarding

41. You download a file from an FTP site on the Internet. What is the highest layer in the OSI model used in this FTP operations?
Show cdp neighbor detail
Network
To prevent switching loops in networks with redundant switched paths.
Application

42. 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?
Telnet and FTP
Layer 3
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.

43. 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?
Decrease the window size.
An additional broadcast domain will be created.
Information about a route should never be sent back in the direction from which the original update came.
To allow remote management of the switch.

44. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
HTTPS - SMTP - and TFTP
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Telnet and FTP
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.

45. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
In an improperly implemented redundant topology
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Layer 4
CertK Switch(config)# ip default-gateway 192.168.1.115

46. You need to describe the various types of flow control to your co-workers. Which of the following are types of flow control that can be used in a network?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
HTTPS
Congestion avoidance - Windowing and Buffering
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

47. Which of the following are types of flow control?
Buffering - Cut-through - and Congestion avoidance
Application
Information about a route should never be sent back in the direction from which the original update came.
Source Port - Acknowledgment Number - and Window

48. Which of the following services use TCP?
SMTP FTP and HTTP
Learning - Listening - and Forwarding
SMTP - FTP - HTTP - and HTTPS
An additional broadcast domain will be created.

49. 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?
It is used to prevent switching loops in networks with redundant switched routes.
A cross-over cable
Sequence number - Window size - and Acknowledgment number
Layer 4

50. What kind of cable should be used to establish a trunked line between two Catalyst switches?
A cross-over cable
VTP will allow switches to share VLAN configuration information
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.