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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. 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
Duplex mismatch
The switch will forward the frame to a specific port
Show cdp neighbor detail
MAC Address and Bridge Priority

2. 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?
Data link
An additional broadcast domain will be created.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Certkiller B > trace

3. 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
Physical Layer and Datalink Layer
Application
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

4. 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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5. 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
An additional broadcast domain will be created.
Configure the switch so that it has a lower priority than other switches in the network.
Auto - Desirable - and On

6. 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?
This is an Ethernet port operating at half duplex
The port is experiencing errors
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
The switch will forward the frame to a specific port

7. Which Layer 4 protocol is used for a Telnet connections between two CK routers?
Certkiller B > trace
TCP
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
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

8. 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?
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
Telnet and FTP
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.
Application

9. When comparing and contrasting the similarities and differences between bridges and switches - which of the following are valid statements?
Layer 4
All switch and bridge ports are in either the forwarding or blocking state.
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 switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.

10. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Auto - Desirable - and On
Congestion avoidance - Windowing and Buffering
Buffering - Cut-through - and Congestion avoidance
802.1Q and ISL

11. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
Telnet and FTP
VTP will allow switches to share VLAN configuration information
It will prevent segment 1's broadcasts from getting to segment 2.

12. 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
Auto - Desirable - and On
Information about a route should never be sent back in the direction from which the original update came.
It is used to prevent switching loops in networks with redundant switched routes.
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

13. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Packet switching - Packet filtering and Internetwork communication.
HTTPS
Path selections and Packet switching.
Layer 4

14. 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?
Decrease the window size.
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.
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Switches increase the number of collision domains in the network.

15. 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
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Switches increase the number of collision domains in the network.
Data link

16. Which of the following are true of Ethernet technology?
Telnet and FTP
An additional broadcast domain will be created.
Hosts use a logical bus topology
Layer 3

17. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
All switch and bridge ports are in either the forwarding or blocking state.
Layer 4
Switches increase the number of collision domains in the network.

18. With regard to Ethernet media access methods - which of the following are true?
Source Port - Acknowledgment Number - and Window
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.
The network layer
An electrical pulse indicates that the collision has cleared.

19. 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
It is the sum of the costs based on bandwidth
The network layer
Network
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.

20. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
STP
Show arp and Show interface
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Duplex mismatch

21. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
Sequence number - Window size - and Acknowledgment number
Show arp and Show interface
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
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.

22. 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
Auto - Desirable - and On
A cross-over cable
802.1Q and ISL

23. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
Show arp and Show interface
Transport
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
SMTP - FTP - HTTP - and HTTPS

24. Which of the following correctly describe the various functions and virtues of a router?
The sequence number in the TCP header.
Physical Layer and Datalink Layer
Decrease the window size.
Packet switching - Packet filtering and Internetwork communication.

25. 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?
CertK Switch(config)# ip default-gateway 192.168.1.115
Full-duplex Ethernet can provide higher throughout 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.
Port security

26. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
802.1Q and ISL
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Increased latency and Filtering of all frame errors
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.

27. Which of the following services use TCP?
HTTPS - SMTP - and TFTP
To allow remote management of the switch.
Sequence number - Window size - and Acknowledgment number
SMTP FTP and HTTP

28. Which OSI layer header contains the address of a destination host that is on another network?
Network
Physical Layer and Datalink Layer
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 switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

29. 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?
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Auto - Desirable - and On
Switches increase the number of collision domains in the network.
Data link

30. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
In an improperly implemented redundant topology
Learning - Listening - and Forwarding
Serial0/1 is down - line protocol is down
Telnet and FTP

31. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
In an improperly implemented redundant topology
SMTP - FTP - HTTP - and HTTPS
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router

32. 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?
Switches increase the number of collision domains in the network.
Configure the switch so that it has lower priority than other switches in the network
The sequence number in the TCP header.
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

33. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
It is used to prevent switching loops in networks with redundant switched routes.
Layer 4
It will prevent segment 1's broadcasts from getting to segment 2.
Serial0/1 is down - line protocol is down

34. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
A broadcast address will never be the source address of a frame
Data link
The interfaces must be configured for NAT.

35. 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?
HTTPS - SMTP - and TFTP
Certkiller B > trace
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 cross-over cable

36. 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
Buffering - Cut-through - and Congestion avoidance
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
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

37. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
In an improperly implemented redundant topology
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.
Switches increase the number of collision domains in the network.
An additional broadcast domain will be created.

38. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
All switch and bridge ports are in either the forwarding or blocking state.
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.
Congestion avoidance - Windowing and Buffering
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

39. Which protocol uses TCP port 443 at layer 4?
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
802.1Q and ISL
HTTPS
To allow remote management of the switch.

40. 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?
The network layer
Show cdp neighbor detail
This is an Ethernet port operating at half duplex
The sequence number in the TCP header.

41. Which three of the protocols below belong to the application layer? (Select three answer choices)
HTTPS - SMTP - and TFTP
Increased latency and Filtering of all frame errors
The network layer
SMTP FTP and HTTP

42. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
Layer 4
Network
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Show arp and Show interface

43. What kind of cable should be used to establish a trunked line between two Catalyst switches?
A cross-over cable
Hosts use a logical bus topology
Switches - Bridges - and Routers
100 meters

44. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
100 meters
Network
TCP
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

45. 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?
Hosts use a logical bus topology
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.
Sequence number - Window size - and Acknowledgment number
Layer 3

46. 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
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.
Auto - Desirable - and On

47. 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.
Configure the switch so that it has a lower priority than other switches in the network.
The system is malfunctioning.
Hosts use a logical bus topology

48. 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?
Learning - Listening - and Forwarding
To allow remote management of the switch.
Data link
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.

49. Which of the following correctly describe steps in the OSI date encapsulation process?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
802.1Q and ISL
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.

50. 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?
802.1Q and ISL
Show arp and Show interface
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.
The switch will forward the frame to a specific port

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CCNA Hard

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