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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 download a file from an FTP site on the Internet. What is the highest layer in the OSI model used in this FTP operations?
Configure the switch so that it has a lower priority than other switches in the network.
Network
Application
A hub and A repeater.

2. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
A hub and A repeater.
Configure the switch so that it has a lower priority than other switches in the network.
An electrical pulse indicates that the collision has cleared.
VTP will allow switches to share VLAN configuration information

3. 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?
The sequence number in the TCP header.
An additional broadcast domain will be created.
Port security
Auto - Desirable - and On

4. 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?
An electrical pulse indicates that the collision has cleared.
Physical Layer and Datalink Layer
Data link
Layer 3

5. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
MAC Address and Bridge Priority
Transport
Source Port - Acknowledgment Number - and Window
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.

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?
802.3ab and 802.3z
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.
CertK Switch(config)# ip default-gateway 192.168.1.115
MAC Address and Bridge Priority

7. CDP is being used trhoughout the CK network. What are two reasons why the CK network administrator would use CDP?
An additional broadcast domain will be created.
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.
Source Port - Acknowledgment Number - and Window
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.

8. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Configure the switch so that it has lower priority than other switches in the network
Auto - Desirable - and On
STP
All switch and bridge ports are in either the forwarding or blocking state.

9. 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?
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Configure the switch so that it has lower priority than other switches in the network
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.
Data link

10. 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.
Data link
Application
Configure the switch so that it has a lower priority than other switches in the network.

11. Which layer of the OSI reference model is responsible for ensuring reliable end to end delivery of data?
Configure the switch so that it has lower priority than other switches in the network
Increased latency and Filtering of all frame errors
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.
Transport

12. With regard to Ethernet media access methods - which of the following are true?
Sequence number - Window size - and Acknowledgment number
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.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Layer 4

13. Which of the following are spanning tree port states?
Learning - Listening - and Forwarding
HTTPS
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.

14. 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
The sequence number in the TCP header.
Learning - Listening - and Forwarding
Information about a route should never be sent back in the direction from which the original update came.
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

15. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
An additional broadcast domain will be created.
Layer 4
All switch and bridge ports are in either the forwarding or blocking state.
Data link

16. 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.)
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.
MAC Address and Bridge Priority
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.
All switch and bridge ports are in either the forwarding or blocking state.

17. 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?
The port is experiencing errors
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
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 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

18. 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
Information about a route should never be sent back in the direction from which the original update came.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Packet switching - Packet filtering and Internetwork communication.

19. 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?
Port security
A hub and A repeater.
MAC Address and Bridge Priority
CertK Switch(config)# ip default-gateway 192.168.1.115

20. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
The network layer
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Congestion avoidance - Windowing and Buffering
To allow remote management of the switch.

21. Why is full-duplex Ethernet superior to its single-duplex counterpart?
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.
Show cdp neighbor detail
Increased latency and Filtering of all frame errors

22. 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.
Application
It is the sum of the costs based on bandwidth
The port is experiencing errors
Source Port - Acknowledgment Number - and Window

23. 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 receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Device Identifiers - Capabilities list - Platform
A cross-over cable

24. 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?
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
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
Hosts use a logical bus topology
It operates without collisions and It provides faster data transfer

25. 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?
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.
Increased latency and Filtering of all frame errors
CertK Switch(config)# ip default-gateway 192.168.1.115
Show cdp neighbor detail

26. In a switched LAN network - What is the Spanning-Tree algorithm used for?
STP
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.
All switch and bridge ports are in either the forwarding or blocking state.
It is used to prevent switching loops in networks with redundant switched routes.

27. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
This is an Ethernet port operating at half duplex
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.
Source Port - Acknowledgment Number - and Window

28. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
In an improperly implemented redundant topology
SMTP - FTP - HTTP - and HTTPS
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.
Information about a route should never be sent back in the direction from which the original update came.

29. 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
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
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.
The switch will forward the frame to a specific port

30. Which of the following correctly describe steps in the OSI date encapsulation process?
Increased latency and Filtering of all frame errors
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
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 CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

31. 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?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
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.
Configure the switch so that it has a lower priority than other switches in the network.
To prevent switching loops in networks with redundant switched paths.

32. Which of the protocols below use TCP at the transport layer?
An electrical pulse indicates that the collision has cleared.
SMTP - FTP - HTTP - and HTTPS
Transport
Layer 4

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
802.3ab and 802.3z
Duplex mismatch
To prevent switching loops in networks with redundant switched paths.
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

34. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
Congestion avoidance - Windowing and Buffering
802.3ab and 802.3z
STP
The interfaces must be configured for NAT.

35. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
A hub and A repeater.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
VTP

36. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
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
SMTP - FTP - HTTP - and HTTPS
Switches increase the number of collision domains in the network.

37. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
Increased latency and Filtering of all frame errors
Path selections and Packet switching.
Serial0/1 is down - line protocol is down
Network

38. 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.
STP
Device Identifiers - Capabilities list - Platform
Data link

39. 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
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.
Application
Data link
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

40. Which three of the protocols below belong to the application layer? (Select three answer choices)
HTTPS - SMTP - and TFTP
Hosts use a logical bus topology
A hub and A repeater.
In an improperly implemented redundant topology

41. 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.
A hub and A repeater.
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.

42. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
To allow remote management of the switch.
Network
In an improperly implemented redundant topology
Auto - On - and Desirable

43. What is the IEEE standard associated with Gigabit Ethernet?
CertK Switch(config)# ip default-gateway 192.168.1.115
Layer 4
802.3ab and 802.3z
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

44. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller network?
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
Device Identifiers - Capabilities list - Platform
ARP and ICMP
Transport

45. 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?
Telnet and FTP
Physical Layer and Datalink Layer
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

46. Which two of the following values does STP take into consideration when it elects the root bridge?
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
Application
Sequence number - Window size - and Acknowledgment number

47. 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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48. Which of the following commands would be applied to a WAN interface - but not on LAN Interface?
Encapsulations PPP and authentication CHAP
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.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

49. A network administrator wants to control which user hosts can access the network based on their MAC address. What will prevent workstations with unauthorized MAC addresses from connecting to the network through a switch?
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 uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
The network layer
Port security

50. 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?
Packet switching - Packet filtering and Internetwork communication.
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
To allow remote management of the switch.