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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. What kind of cable should be used to establish a trunked line between two Catalyst switches?
Configure the switch so that it has lower priority than other switches in the network
Congestion avoidance - Windowing and Buffering
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.
A cross-over cable

2. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
VTP will allow switches to share VLAN configuration information
Show arp and Show interface
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Layer 4

3. Which protocol uses TCP port 443 at layer 4?
Sequence number - Window size - and Acknowledgment number
HTTPS
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.
An additional broadcast domain will be created.

4. As a CCNA candidate - you must know the various layers of the OSI model. At which layers of the OSI model do Wide Area Networks operate in?
To prevent switching loops in networks with redundant switched paths.
Physical Layer and Datalink Layer
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.
Sequence number - Window size - and Acknowledgment number

5. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
Buffering - Cut-through - and Congestion avoidance
Serial0/1 is down - line protocol is down
Fiber optic cable.
802.3ab and 802.3z

6. 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
Configure the switch so that it has a lower priority than other switches in the network.
Application
The sequence number in the TCP header.
VLAN and Swtich

7. By default - which of the following factors determines the spanning-tree path cost?
ARP and ICMP
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.
It is the sum of the costs based on bandwidth
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

8. 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
Packet switching - Packet filtering and Internetwork communication.
To allow remote management of the switch.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

9. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Auto - Desirable - and On
Switches increase the number of collision domains in the network.

10. 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?
It is used to prevent switching loops in networks with redundant switched routes.
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.
Telnet and FTP
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.

11. 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 interfaces must be configured for NAT.
Show arp and Show interface
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
To allow remote management of the switch.

12. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
A broadcast address will never be the source address of a frame
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
Telnet and FTP
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.

13. 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?
Application
Telnet and FTP
Configure the switch so that it has lower priority than other switches in the network
100 meters

14. A Certkiller Ethernet switch receives a unicast frame with a destination MAC that IS listed in the switch table. What will this switch do with the frame?
The switch will forward the frame to a specific port
MAC Address and Bridge Priority
Auto - Desirable - and On
Layer 3

15. 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
The network layer
The port is experiencing errors
Encapsulations PPP and authentication CHAP

16. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
All switch and bridge ports are in either the forwarding or blocking state.
Switches - Bridges - and Routers
SMTP - FTP - HTTP - and HTTPS

17. 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
Network
Duplex mismatch

18. 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?
The network layer
Network
It operates without collisions and It provides faster data transfer
Hosts use a logical bus topology

19. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
Auto - On - and Desirable
The interfaces must be configured for NAT.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

20. 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.
This is an Ethernet port operating at half duplex
Port security
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.
Application

21. Which of the following are spanning tree port states?
Fiber optic cable.
Learning - Listening - and Forwarding
Show cdp neighbor detail
An additional broadcast domain will be created.

22. 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.
Transport
Show cdp neighbor detail
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

23. 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)
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
HTTPS - SMTP - and TFTP
802.1Q and ISL
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

24. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
The switch will forward the frame to a specific port
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
802.3ab and 802.3z
A broadcast address will never be the source address of a frame

25. 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?
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.
Port security
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
The Bridgeg ID and The bridge priority

26. 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?
SMTP - FTP - HTTP - and HTTPS
Application
VTP
Packet switching - Packet filtering and Internetwork communication.

27. 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?
Layer 3
SMTP - FTP - HTTP - and HTTPS
Congestion avoidance - Windowing and Buffering
Hosts use a logical bus topology

28. 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?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Encapsulations PPP and authentication CHAP
Application
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

29. 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?
Packet switching - Packet filtering and Internetwork communication.
Switches increase the number of collision domains in the network.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Decrease the window size.

30. You unsuccessfully try to ping the Internet from the PC host on the LAN. During the troubleshooting process - you enter the 'show ip nat translations' command but the output is blank. What is the most likely cause of the problem?
It is used to prevent switching loops in networks with redundant switched routes.
Certkiller B > trace
The interfaces must be configured for NAT.
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.

31. 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?
HTTPS - SMTP - and TFTP
Layer 3
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Configure the switch so that it has a lower priority than other switches in the network.

32. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
Certkiller B > trace
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.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

33. 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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34. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
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.
Encapsulations PPP and authentication CHAP
HTTPS

35. Which three of the protocols below belong to the application layer? (Select three answer choices)
HTTPS - SMTP - and TFTP
Configure the switch so that it has a lower priority than other switches in the network.
Auto - On - and Desirable
Port security

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

37. 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
Show arp and Show interface
CertK Switch(config)# ip default-gateway 192.168.1.115
Certkiller B > trace
Buffering - Cut-through - and Congestion avoidance

38. Which of the following are true of Ethernet technology?
Data link
Hosts use a logical bus topology
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Layer 4

39. You are logged into a router and wish to view the layer 3 information about your neighboring Cisco routers. What IOS command gives layer 3 information for of the directly connected router interfaces?
It is used to prevent switching loops in networks with redundant switched routes.
It operates without collisions and It provides faster data transfer
The Bridgeg ID and The bridge priority
Show cdp neighbor detail

40. A Certkiller switch is configured with all ports assigned to VLAN 2. In addition - all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?
Sequence number - Window size - and Acknowledgment number
HTTPS
An additional broadcast domain will be created.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

41. 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
Decrease the window size.
VTP will allow switches to share VLAN configuration information
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Duplex mismatch

42. CDP is running between two CK devices. What information is supplied by CDP?
Network
Serial0/1 is down - line protocol is down
Device Identifiers - Capabilities list - Platform
To prevent switching loops in networks with redundant switched paths.

43. 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?
VLAN and Swtich
Congestion avoidance - Windowing and Buffering
Port security
Increased latency and Filtering of all frame errors

44. 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
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.
Layer 4
The network layer

45. Which two of the following values does STP take into consideration when it elects the root bridge?
The Bridgeg ID and The bridge priority
Application
All switch and bridge ports are in either the forwarding or blocking state.
Hosts use a logical bus topology

46. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
The Bridgeg ID and The bridge priority
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
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
Information about a route should never be sent back in the direction from which the original update came.

47. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
The system is malfunctioning.
Physical Layer and Datalink Layer
CertK Switch(config)# ip default-gateway 192.168.1.115
Auto - Desirable - and On

48. 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?
The Bridgeg ID and The bridge priority
MAC Address and Bridge Priority
It is used to prevent switching loops in networks with redundant switched routes.
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.

49. Cisco is the leader in the router market space. What basic functions do their routers perform in a 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.
Source Port - Acknowledgment Number - and Window
Show arp and Show interface
Path selections and Packet switching.

50. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
Data link
Telnet and FTP
In an improperly implemented redundant topology
It is used to prevent switching loops in networks with redundant switched routes.