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CCNA Hard

Instructions:

Answer 50 questions in 15 minutes.
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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. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
MAC Address and Bridge Priority
Switches increase the number of collision domains in the network.
The switch will forward the frame to a specific port
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

2. 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?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
The port is experiencing errors
Packet switching - Packet filtering and Internetwork communication.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

3. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
Hosts use a logical bus topology
This is an Ethernet port operating at half duplex
Switches increase the number of collision domains in the network.
Configure the switch so that it has a lower priority than other switches in the network.

4. Which of the following correctly describe the various functions and virtues of a router?
Path selections and Packet switching.
Packet switching - Packet filtering and Internetwork communication.
Congestion avoidance - Windowing and Buffering
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

5. 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?
Sequence number - Window size - and Acknowledgment number
A hub and A repeater.
SMTP - FTP - HTTP - and HTTPS
Device Identifiers - Capabilities list - Platform

6. 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?
Switches increase the number of collision domains in the network.
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.
Packet switching - Packet filtering and Internetwork communication.
To allow remote management of the switch.

7. 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
To prevent switching loops in networks with redundant switched paths.
SMTP FTP and HTTP
A cross-over cable

8. 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?
Fiber optic cable.
HTTPS
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
The interfaces must be configured for NAT.

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?
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.
Switches increase the number of collision domains in the network.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
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

10. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
VTP will allow switches to share VLAN configuration information
The network layer
Path selections and Packet switching.
Congestion avoidance - Windowing and Buffering

11. Which of the following correctly describe steps in the OSI date encapsulation process?
MAC Address and Bridge Priority
VTP will allow switches to share VLAN configuration information
Path selections and Packet switching.
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.

12. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
Configure the switch so that it has a lower priority than other switches in the network.
100 meters
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.
Show cdp neighbor detail

13. 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
Data link
MAC Address and Bridge Priority
It is used to prevent switching loops in networks with redundant switched routes.

14. 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?
Physical Layer and Datalink Layer
Show arp and Show 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.
The port is experiencing errors

15. 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
In an improperly implemented redundant topology
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.
Buffering - Cut-through - and Congestion avoidance

16. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
Buffering - Cut-through - and Congestion avoidance
The Bridgeg ID and The bridge priority
802.1Q and ISL
Data link

17. Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?
Duplex mismatch
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Information about a route should never be sent back in the direction from which the original update came.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

18. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Layer 4
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
CertK Switch(config)# ip default-gateway 192.168.1.115
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

19. Which of the following are spanning tree port states?
Learning - Listening - and Forwarding
Decrease the window size.
Show cdp neighbor detail
Device Identifiers - Capabilities list - Platform

20. 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?
This is an Ethernet port operating at half duplex
Configure the switch so that it has a lower priority than other switches in the network.
An additional broadcast domain will be created.
Device Identifiers - Capabilities list - Platform

21. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
Serial0/1 is down - line protocol is down
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Auto - On - and Desirable
TCP

22. 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?
Learning - Listening - and Forwarding
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.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
The switch will forward the frame to a specific port

23. 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?
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.
Buffering - Cut-through - and Congestion avoidance
The switch will forward the frame to a specific port
TCP

24. 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?
Show arp and Show interface
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Application
Auto - Desirable - and On

25. CDP is running between two CK devices. What information is supplied by CDP?
The sequence number in the TCP header.
Network
Device Identifiers - Capabilities list - Platform
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.

26. 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.
Layer 4
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Application
A cross-over cable

27. 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?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
100 meters
Increased latency and Filtering of all frame errors
802.1Q and ISL

28. 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
Switches increase the number of collision domains in the network.
Data link
Serial0/1 is down - line protocol is down
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.

29. What are two characteristics of 'store and forward' switching?
Configure the switch so that it has a lower priority than other switches in the network.
Auto - Desirable - and On
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

30. 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?
Serial0/1 is down - line protocol is down
The sequence number in the TCP header.
Show cdp neighbor detail
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?
Port security
A broadcast address will never be the source address of a frame
100 meters
Configure the switch so that it has lower priority than other switches in the network

32. 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
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
The Bridgeg ID and The bridge priority

33. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
A cross-over cable
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.
802.3ab and 802.3z
VLAN and Swtich

34. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
It operates without collisions and It provides faster data transfer
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Show arp and Show interface
Auto - Desirable - and On

35. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
Network
Duplex mismatch
Source Port - Acknowledgment Number - and Window
Fiber optic cable.

36. 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?
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
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
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
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

37. 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?
The port is experiencing errors
An additional broadcast domain will be created.
Congestion avoidance - Windowing and Buffering
Show arp and Show interface

38. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Network
Serial0/1 is down - line protocol is down
The switch will forward the frame to a specific port

39. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
Data link
SMTP FTP and HTTP
The port is experiencing errors
Information about a route should never be sent back in the direction from which the original update came.

40. Which of the following are true of Ethernet technology?
Layer 3
Hosts use a logical bus topology
SMTP FTP and HTTP
Information about a route should never be sent back in the direction from which the original update came.

41. 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?
Port security
CertK Switch(config)# ip default-gateway 192.168.1.115
Data link
STP

42. 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.
Certkiller B > trace
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.
HTTPS - SMTP - and TFTP

43. 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?
Switches - Bridges - and Routers
Auto - Desirable - and On
Telnet and FTP
Configure the switch so that it has lower priority than other switches in the network

44. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
In an improperly implemented redundant topology
TCP
VLAN and Swtich
The system is malfunctioning.

45. Which of the following devices can the Certkiller network administrator use to segment the LAN?
The Bridgeg ID and The bridge priority
An electrical pulse indicates that the collision has cleared.
Switches - Bridges - and Routers
Telnet and FTP

46. While troubleshooting a network connectivity problem - a Certkiller technician observes steady link lights on both the workstation NIC and the switch port to which the workstation is connected. However - when the ping command is issued from the works
Information about a route should never be sent back in the direction from which the original update came.
Show cdp neighbor detail
The network layer
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

47. What kind of cable should be used to establish a trunked line between two Catalyst switches?
CertK Switch(config)# ip default-gateway 192.168.1.115
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.
Sequence number - Window size - and Acknowledgment number
A cross-over cable

48. 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?
Auto - On - and Desirable
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.
VLAN and Swtich
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

49. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Layer 4
To prevent switching loops in networks with redundant switched paths.
HTTPS
Serial0/1 is down - line protocol is down

50. 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
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.
Auto - Desirable - and On
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
VLAN and Swtich

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