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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. 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?
VTP will allow switches to share VLAN configuration information
HTTPS
ARP and ICMP
Application

2. 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
It is the sum of the costs based on bandwidth
The sequence number in the TCP header.
A hub and A repeater.
Layer 4

3. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
The system is malfunctioning.
Switches increase the number of collision domains in the network.
A broadcast address will never be the source address of a frame
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

4. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
It is the sum of the costs based on bandwidth
802.1Q and ISL
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
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.

5. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
Application
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
The Bridgeg ID and The bridge priority
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.

6. 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
Layer 3
It operates without collisions and It provides faster data transfer
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.

7. 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?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Congestion avoidance - Windowing and Buffering
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Switches increase the number of collision domains in the network.

8. Which of the following are spanning tree port states?
Learning - Listening - and Forwarding
VTP
It operates without collisions and It provides faster data transfer
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

9. 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
Decrease the window size.
Telnet and FTP
Data link

10. Which of the following devices can the Certkiller network administrator use to segment the LAN?
Switches - Bridges - and Routers
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
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.

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
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
The network layer
Increased latency and Filtering of all frame errors
Layer 4

12. CDP is running between two CK devices. What information is supplied by CDP?
It is used to prevent switching loops in networks with redundant switched routes.
The system is malfunctioning.
Device Identifiers - Capabilities list - Platform
The Bridgeg ID and The bridge priority

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
Certkiller B > trace
Packet switching - Packet filtering and Internetwork communication.
Switches - Bridges - and Routers

14. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
TCP
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
The system is malfunctioning.
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

15. 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?
STP
It is used to prevent switching loops in networks with redundant switched routes.
Physical Layer and Datalink Layer
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

16. 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
Packet switching - Packet filtering and Internetwork communication.
802.3ab and 802.3z
Duplex mismatch
Physical Layer and Datalink Layer

17. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The Bridgeg ID and The bridge priority
The system is malfunctioning.
Increased latency and Filtering of all frame errors
It operates without collisions and It provides faster data transfer

18. Which three of the protocols below belong to the application layer? (Select three answer choices)
HTTPS - SMTP - and TFTP
100 meters
Application
Network

19. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Source Port - Acknowledgment Number - and Window
Layer 4
HTTPS

20. Which fields are included in the TCP header?
Source Port - Acknowledgment Number - and Window
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
The interfaces must be configured for NAT.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

21. 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?
SMTP FTP and HTTP
The network layer
The port is experiencing errors
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

22. 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
The switch will forward the frame to a specific port
HTTPS
Network

23. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
Duplex mismatch
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
Network
Application

24. 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
It will prevent segment 1's broadcasts from getting to segment 2.
An electrical pulse indicates that the collision has cleared.
Source Port - Acknowledgment Number - and Window

25. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
A hub and A repeater.
Certkiller B > trace
To allow remote management of the switch.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

26. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Path selections and Packet switching.
Layer 4
The system is malfunctioning.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

27. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Encapsulations PPP and authentication CHAP
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.
802.3ab and 802.3z
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.

28. 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 and HTTP
The Bridgeg ID and The bridge priority
Layer 3
The port is experiencing errors

29. 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
100 meters
Duplex mismatch
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.

30. Which of the following correctly describe steps in the OSI date encapsulation process?
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Physical Layer and Datalink Layer
VLAN and Swtich
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.

31. 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?
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
Show cdp neighbor detail
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

32. Which two of the following values does STP take into consideration when it elects the root bridge?
The Bridgeg ID and The bridge priority
Congestion avoidance - Windowing and Buffering
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.
Buffering - Cut-through - and Congestion avoidance

33. Which of the following correctly describe the various functions and virtues of a router?
Packet switching - Packet filtering and Internetwork communication.
Auto - Desirable - and On
HTTPS - SMTP - and TFTP
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

34. 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?
Path selections and Packet switching.
An additional broadcast domain will be created.
Configure the switch so that it has a lower priority than other switches in the network.
Auto - On - and Desirable

35. 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?
Device Identifiers - Capabilities list - Platform
The interfaces must be configured for NAT.
Packet switching - Packet filtering and Internetwork communication.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

36. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Show cdp neighbor detail
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Layer 4
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.

37. By default - which of the following factors determines the spanning-tree path cost?
A hub and A repeater.
SMTP - FTP - HTTP - and HTTPS
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
It is the sum of the costs based on bandwidth

38. 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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39. 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?
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
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
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.

40. 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?
802.1Q and ISL
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
This is an Ethernet port operating at half duplex
The sequence number in the TCP header.

41. 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.)
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
MAC Address and Bridge Priority
VTP will allow switches to share VLAN configuration information
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.

42. 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?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
SMTP FTP and HTTP
This is an Ethernet port operating at half duplex
The sequence number in the TCP header.

43. 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
The network layer
Hosts use a logical bus topology
MAC Address and Bridge Priority
Increased latency and Filtering of all frame errors

44. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
HTTPS - SMTP - and TFTP
STP
VTP will allow switches to share VLAN configuration information
802.3ab and 802.3z

45. With regard to Ethernet media access methods - which of the following are true?
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.
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
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.

46. 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?
CertK Switch(config)# ip default-gateway 192.168.1.115
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.
Port security

47. Which of the following are types of flow control?
Network
Buffering - Cut-through - and Congestion avoidance
Configure the switch so that it has lower priority than other switches in the network
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

48. What are two characteristics of 'store and forward' switching?
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Auto - Desirable - and On
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

49. 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 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.
Congestion avoidance - Windowing and Buffering
SMTP FTP and HTTP
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

50. 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.
Show arp and Show interface
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 system is malfunctioning.