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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. Which of the protocols below use TCP at the transport layer?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
SMTP - FTP - HTTP - and HTTPS
Information about a route should never be sent back in the direction from which the original update came.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

2. 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?
Application
Buffering - Cut-through - and Congestion avoidance
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
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.

3. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Switches increase the number of collision domains in the network.
SMTP - FTP - HTTP - and HTTPS
Layer 4
CertK Switch(config)# ip default-gateway 192.168.1.115

4. 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
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Transport
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.
Network

5. 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
The Bridgeg ID and The bridge priority
An electrical pulse indicates that the collision has cleared.
Duplex mismatch
An additional broadcast domain will be created.

6. Which of the following services use TCP?
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.
This is an Ethernet port operating at half duplex
SMTP FTP and HTTP
Learning - Listening - and Forwarding

7. 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?
Auto - On - and Desirable
The network layer
Packet switching - Packet filtering and Internetwork communication.
To allow remote management of the switch.

8. What are two characteristics of 'store and forward' switching?
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
Sequence number - Window size - and Acknowledgment number
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Congestion avoidance - Windowing and Buffering

9. 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?
Encapsulations PPP and authentication CHAP
Switches increase the number of collision domains in the network.
Layer 3
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth

10. What is the purpose of the spanning-tree algorithm in a switched LAN?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
To prevent switching loops in networks with redundant switched paths.
Show cdp neighbor detail
Layer 4

11. 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
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Network
SMTP - FTP - HTTP - and HTTPS

12. 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
Serial0/1 is down - line protocol is down
Layer 4
SMTP FTP and HTTP

13. Which two statements describe the operation of the CSMA/CD access method - which is in use on the Certkiller 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.
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
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
In an improperly implemented redundant topology

14. 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
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.
To prevent switching loops in networks with redundant switched paths.
This is an Ethernet port operating at half duplex

15. 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.
Configure the switch so that it has lower priority than other switches in the network
Hosts use a logical bus topology
Switches increase the number of collision domains in the network.

16. Which of the following are true of Ethernet technology?
Encapsulations PPP and authentication CHAP
Hosts use a logical bus topology
Application
SMTP - FTP - HTTP - and HTTPS

17. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the Certkiller Switched LAN?
Switches - Bridges - and Routers
Sequence number - Window size - and Acknowledgment number
In an improperly implemented redundant topology
Source Port - Acknowledgment Number - and Window

18. 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?
The Bridgeg ID and The bridge priority
Layer 4
Network
Layer 3

19. 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?
Layer 4
Application
The network layer
The port is experiencing errors

20. 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?
Duplex mismatch
ARP and ICMP
This is an Ethernet port operating at half duplex
VTP

21. Which of the following correctly describe the various functions and virtues of a router?
An electrical pulse indicates that the collision has cleared.
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.
Packet switching - Packet filtering and Internetwork communication.
Layer 4

22. 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)
VTP
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
HTTPS
802.1Q and ISL

23. Which of the following devices can the Certkiller network administrator use to segment the LAN?
The interfaces must be configured for NAT.
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Switches - Bridges - and Routers
Packet switching - Packet filtering and Internetwork communication.

24. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
Network
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.
The interfaces must be configured for NAT.

25. 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?
Show cdp neighbor detail
Switches increase the number of collision domains in the network.
STP
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.

26. Split horizon has been enabled within the Certkiller routed network. Which one of the following statements best explains the split horizon rule?
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Layer 4
Certkiller B > trace
Information about a route should never be sent back in the direction from which the original update came.

27. Which fields are included in the TCP header?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Hosts use a logical bus topology
The network layer
Source Port - Acknowledgment Number - and Window

28. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free 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.
STP
Switches increase the number of collision domains in the network.
Path selections and Packet switching.

29. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
In an improperly implemented redundant topology
A broadcast address will never be the source address of a frame
It operates without collisions and It provides faster data transfer
The interfaces must be configured for NAT.

30. 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?
In an improperly implemented redundant topology
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
It is the sum of the costs based on bandwidth
Configure the switch so that it has a lower priority than other switches in the network.

31. 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
The network layer
HTTPS - SMTP - and TFTP
Application

32. 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?
Certkiller B > trace
The switch will forward the frame to a specific port
Congestion avoidance - Windowing and Buffering
A broadcast address will never be the source address of a frame

33. Which of the following correctly describe steps in the OSI date encapsulation process?
Layer 4
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.
VTP
Show arp and Show interface

34. Which of the following are spanning tree port states?
Hosts use a logical bus topology
VTP will allow switches to share VLAN configuration information
Learning - Listening - and Forwarding
Packet switching - Packet filtering and Internetwork communication.

35. CDP is running between two CK devices. What information is supplied by CDP?
Hosts use a logical bus topology
It operates without collisions and It provides faster data transfer
Telnet and FTP
Device Identifiers - Capabilities list - Platform

36. 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?
MAC Address and Bridge Priority
Learning - Listening - and Forwarding
Physical Layer and Datalink Layer
Show cdp neighbor detail

37. 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?
The interfaces must be configured for NAT.
Increased latency and Filtering of all frame errors
Switches increase the number of collision domains in the network.
Duplex mismatch

38. Which OSI layer header contains the address of a destination host that is on another network?
Data link
Encapsulations PPP and authentication CHAP
802.3ab and 802.3z
Network

39. Which of the following are types of flow control?
The system is malfunctioning.
Show cdp neighbor detail
Buffering - Cut-through - and Congestion avoidance
It operates without collisions and It provides faster data transfer

40. 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
Device Identifiers - Capabilities list - Platform
It operates without collisions and It provides faster data transfer
The network layer
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

41. By default - which of the following factors determines the spanning-tree path cost?
Increased latency and Filtering of all frame errors
Learning - Listening - and Forwarding
The system is malfunctioning.
It is the sum of the costs based on bandwidth

42. 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
An electrical pulse indicates that the collision has cleared.
Data link
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.
VLAN and Swtich

43. 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?

44. 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?
Physical Layer and Datalink Layer
Sequence number - Window size - and Acknowledgment number
The sequence number in the TCP header.
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.

45. 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 broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Data link
802.3ab and 802.3z
MAC Address and Bridge Priority

46. You need to perform some initial configuration tasks on a new Certkiller switch. What are the possible trunking modes for this switch port?
Packet switching - Packet filtering and Internetwork communication.
To prevent switching loops in networks with redundant switched paths.
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.
Auto - On - and Desirable

47. 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.
Configure the switch so that it has lower priority than other switches in the network
To prevent switching loops in networks with redundant switched paths.
Application
SMTP FTP and HTTP

48. 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
CertK Switch(config)# ip default-gateway 192.168.1.115
Learning - Listening - and Forwarding
100 meters

49. What is the IEEE standard associated with Gigabit Ethernet?
HTTPS - SMTP - and TFTP
802.3ab and 802.3z
Fiber optic cable.
The network layer

50. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
The switch will forward the frame to a specific port
ARP and ICMP
802.1Q and ISL