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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. 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
802.3ab and 802.3z
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

2. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
The system is malfunctioning.
Device Identifiers - Capabilities list - Platform
All switch and bridge ports are in either the forwarding or blocking state.
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.

3. 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
Increased latency and Filtering of all frame errors
It operates without collisions and It provides faster data transfer
The switch will forward the frame to a specific port

4. Which of the following are true of Ethernet technology?
Information about a route should never be sent back in the direction from which the original update came.
A cross-over cable
Duplex mismatch
Hosts use a logical bus topology

5. 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?
Switches increase the number of collision domains in the network.
Application
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

6. 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 port is experiencing errors
Port security
Show cdp neighbor detail

7. On a half-duplex Ethernet LAN - two hosts attempt to send data simultaneously - resulting in a collision. Following this collision - what will the hosts do?
An electrical pulse indicates that the collision has cleared.
An additional broadcast domain will be created.
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Show arp and Show interface

8. 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?
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.
To allow remote management of the switch.
All switch and bridge ports are in either the forwarding or blocking state.
Configure the switch so that it has lower priority than other switches in the network

9. 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 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.
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.
100 meters

10. 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.
Network
The switch will forward the frame to a specific port
To allow remote management of the switch.

11. Which protocol uses TCP port 443 at layer 4?
It is used to prevent switching loops in networks with redundant switched routes.
Certkiller B > trace
It operates without collisions and It provides faster data transfer
HTTPS

12. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
HTTPS
Switches increase the number of collision domains in the network.
Auto - Desirable - and On
Data link

13. 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?
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.
An additional broadcast domain will be created.
Telnet and FTP
To allow remote management of the switch.

14. 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?
Port security
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.
Transport

15. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
Sequence number - Window size - and Acknowledgment number
Layer 4
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
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

16. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Data link
The switch will forward the frame to a specific port
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

17. 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?
ARP and ICMP
Switches increase the number of collision domains in the network.
In an improperly implemented redundant topology
Auto - On - and Desirable

18. 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
Encapsulations PPP and authentication CHAP
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.

19. 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
Switches increase the number of collision domains in the network.
A broadcast address will never be the source address of a frame
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

20. Split horizon has been enabled within the Certkiller routed network. Which one of the following statements best explains the split horizon rule?
All switch and bridge ports are in either the forwarding or blocking state.
HTTPS
Decrease the window size.
Information about a route should never be sent back in the direction from which the original update came.

21. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
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 switch will forward the frame to a specific port
The network layer
Serial0/1 is down - line protocol is down

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.
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.
Network
Application
Telnet and FTP

23. 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?
Sequence number - Window size - and Acknowledgment number
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
It is used to prevent switching loops in networks with redundant switched routes.

24. Which of the following correctly describe steps in the OSI date encapsulation process?
Physical Layer and Datalink Layer
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.
802.3ab and 802.3z
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

25. 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?
All switch and bridge ports are in either the forwarding or blocking state.
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 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 switch will forward the frame to a specific port

26. CDP is running between two CK devices. What information is supplied by CDP?
Duplex mismatch
Device Identifiers - Capabilities list - Platform
The network layer
Network

27. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
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
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
A broadcast address will never be the source address of a frame
Application

28. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
STP
In an improperly implemented redundant topology
Application
TCP

29. 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.)
Encapsulations PPP and authentication CHAP
ARP and ICMP
MAC Address and Bridge Priority
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

30. 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?
Sequence number - Window size - and Acknowledgment number
The interfaces must be configured for NAT.
A hub and A repeater.
Hosts use a logical bus topology

31. 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?

32. What is the IEEE standard associated with Gigabit Ethernet?
802.3ab and 802.3z
Serial0/1 is down - line protocol is down
Show cdp neighbor detail
Layer 3

33. 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?
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.
A hub and A repeater.
Congestion avoidance - Windowing and Buffering

34. 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.
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
HTTPS - SMTP - and TFTP
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

35. 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?
Duplex mismatch
Hosts use a logical bus topology
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
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.

36. 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?
In an improperly implemented redundant topology
The switch will forward the frame to a specific port
Data link
802.3ab and 802.3z

37. Why is full-duplex Ethernet superior to its single-duplex counterpart?
Show cdp neighbor detail
Show arp and Show interface
802.3ab and 802.3z
It operates without collisions and It provides faster data transfer

38. 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?
Increased latency and Filtering of all frame errors
Port security
Physical Layer and Datalink Layer
Auto - Desirable - and On

39. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
VTP will allow switches to share VLAN configuration information
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
Transport
Configure the switch so that it has a lower priority than other switches in the network.

40. 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 - Bridges - and Routers
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.
Duplex mismatch
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

41. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
STP
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
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.
Information about a route should never be sent back in the direction from which the original update came.

42. Which of the protocols below use TCP at the transport layer?
SMTP - FTP - HTTP - and HTTPS
Application
Transport
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

43. 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?
Layer 3
Layer 4
Application
Path selections and Packet switching.

44. 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
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
The sequence number in the TCP header.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
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

45. 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?
All switch and bridge ports are in either the forwarding or blocking state.
Application
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
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.

46. Which two of the following values does STP take into consideration when it elects the root bridge?
Sequence number - Window size - and Acknowledgment number
Duplex mismatch
802.3ab and 802.3z
The Bridgeg ID and The bridge priority

47. 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)
Configure the switch so that it has lower priority than other switches in the network
Configure the switch so that it has a lower priority than other switches in the network.
Path selections and Packet switching.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

48. 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
Learning - Listening - and Forwarding
Layer 4
Application

49. 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 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.
STP
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
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth

50. 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.
MAC Address and Bridge Priority
The network layer
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.