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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 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
Certkiller B > trace
Telnet and FTP
VLAN and Swtich
CertK Switch(config)# ip default-gateway 192.168.1.115

2. Why is full-duplex Ethernet superior to its single-duplex counterpart?
Serial0/1 is down - line protocol is down
Certkiller B > trace
It operates without collisions and It provides faster data transfer
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth

3. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
A broadcast address will never be the source address of a frame
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Buffering - Cut-through - and Congestion avoidance
HTTPS - SMTP - and TFTP

4. Which of the following correctly describe the various functions and virtues of a router?
Packet switching - Packet filtering and Internetwork communication.
Switches increase the number of collision domains in the network.
Path selections and Packet switching.
It will prevent segment 1's broadcasts from getting to segment 2.

5. What is the purpose of the spanning-tree algorithm in a switched LAN?
To prevent switching loops in networks with redundant switched paths.
Data link
The network layer
VTP

6. 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?
STP
Buffering - Cut-through - and Congestion avoidance
An additional broadcast domain will be created.
VTP

7. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
The port is experiencing errors
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
Path selections and Packet switching.
Layer 4

8. 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?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Switches increase the number of collision domains in the network.
100 meters
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

9. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free 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.
STP
Auto - On - and Desirable
Certkiller B > trace

10. Split horizon has been enabled within the Certkiller routed network. Which one of the following statements best explains the split horizon rule?
802.1Q and ISL
It is used to prevent switching loops in networks with redundant switched routes.
Information about a route should never be sent back in the direction from which the original update came.
Port security

11. 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
Auto - On - and Desirable
An electrical pulse indicates that the collision has cleared.
MAC Address and Bridge Priority

12. 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
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Packet switching - Packet filtering and Internetwork communication.
Certkiller B > trace
Duplex mismatch

13. Which of the following services use TCP?
The switch will forward the frame to a specific port
SMTP FTP and HTTP
Certkiller B > trace
ARP and ICMP

14. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
A hub and A repeater.
Serial0/1 is down - line protocol is down
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
It is used to prevent switching loops in networks with redundant switched routes.

15. 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.)
MAC Address and Bridge Priority
It will prevent segment 1's broadcasts from getting to segment 2.
HTTPS
Configure the switch so that it has lower priority than other switches in the network

16. Which protocol uses TCP port 443 at layer 4?
The interfaces must be configured for NAT.
Decrease the window size.
HTTPS
An additional broadcast domain will be created.

17. ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets?
Hosts use a logical bus topology
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
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Telnet and FTP

18. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
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 Bridgeg ID and The bridge priority
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
Application

19. CDP is running between two CK devices. What information is supplied by CDP?
Device Identifiers - Capabilities list - Platform
Configure the switch so that it has lower priority than other switches in the network
Layer 4
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

20. Which of the following are true of Ethernet technology?
Hosts use a logical bus topology
802.3ab and 802.3z
Encapsulations PPP and authentication CHAP
Fiber optic cable.

21. 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
The system is malfunctioning.
It will prevent segment 1's broadcasts from getting to segment 2.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

22. 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?
This is an Ethernet port operating at half duplex
100 meters
Telnet and FTP
It operates without collisions and It provides faster data transfer

23. 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 is used to prevent switching loops in networks with redundant switched routes.
802.3ab and 802.3z
Application
Show arp and Show interface

24. Which of the following are types of flow control?
Buffering - Cut-through - and Congestion avoidance
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
STP
Layer 4

25. 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?
Configure the switch so that it has a lower priority than other switches in the network.
HTTPS - SMTP - and TFTP
A hub and A repeater.
VLAN and Swtich

26. 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?
A broadcast address will never be the source address of a frame
Fiber optic cable.
HTTPS - SMTP - and TFTP
The port is experiencing errors

27. By default - which of the following factors determines the spanning-tree path cost?
A switch is a multiport bridge and Bridges and switches learn Mac addresses by examining the source MAC address of each frame received.
An additional broadcast domain will be created.
Show cdp neighbor detail
It is the sum of the costs based on bandwidth

28. 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
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Decrease the window size.
Configure the switch so that it has a lower priority than other switches in the network.

29. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
All switch and bridge ports are in either the forwarding or blocking state.
It operates without collisions and It provides faster data transfer
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

30. You are experiencing intermittent issues relating to congestion within the Certkiller network. What are the possible causes of congestion on this LAN?
Decrease the window size.
SMTP FTP and HTTP
A broadcast domain with too many hosts - Broadcast storms - and Low 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.

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?

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32. Which two of the following values does STP take into consideration when it elects the root bridge?
Layer 4
The Bridgeg ID and The bridge priority
Network
Network

33. The system LED is amber on a new Certkiller Catalyst 2950 series switch. What does this indicate?
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
The system is malfunctioning.
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

34. At which OSI layer is a logical path created between two host systems named CK1 and CK2 on the Certkiller LAN?
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
Network
Auto - Desirable - and On
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.

35. Which one of the following characterisitcs is true regardigin the use of the hubs and switches?
802.1Q and ISL
Switches increase the number of collision domains in the network.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Layer 4

36. 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?
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
A hub and A repeater.
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.
To allow remote management of the switch.

37. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
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.
Device Identifiers - Capabilities list - Platform
802.3ab and 802.3z

38. 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)
To prevent switching loops in networks with redundant switched paths.
TCP
Filtering can occur based on Layer 3 information and Broadcasts are not forwarded across the router
Packet switching - Packet filtering and Internetwork communication.

39. 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?
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.
Switches - Bridges - and Routers
ARP and ICMP
CertK Switch(config)# ip default-gateway 192.168.1.115

40. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
To allow remote management of the switch.
Auto - Desirable - and On
A cross-over cable
CertK Switch(config)# ip default-gateway 192.168.1.115

41. Which three of the protocols below belong to the application layer? (Select three answer choices)
HTTPS - SMTP - and TFTP
Application
A hub and A repeater.
VLAN and Swtich

42. 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?
CertK Switch(config)# ip default-gateway 192.168.1.115
Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
Buffering - Cut-through - and Congestion avoidance
The Bridgeg ID and The bridge priority

43. Acknowledgements - sequencing - and flow control are functions that are handled by which layer of the OSI model?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
Layer 4
Hosts use a logical bus topology
Transport

44. 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?
Configure the switch so that it has a lower priority than other switches in the network.
Device Identifiers - Capabilities list - Platform
The interfaces must be configured for NAT.
Configure the switch so that it has lower priority than other switches in the network

45. Two buildings on the London campus of a CK corporation must be connected to use Ethernet with a bandwidth of at least 100 Mbps. CK is concerned about possible problems from voltage potential differences between the two buldings. Which media type shou
Fiber optic cable.
Serial0/1 is down - line protocol is down
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
Port security

46. In a switched LAN network - What is the Spanning-Tree algorithm used for?
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Application
It is used to prevent switching loops in networks with redundant switched routes.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

47. Which OSI layer header contains the address of a destination host that is on another network?
Network
Encapsulations PPP and authentication CHAP
Duplex mismatch
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses

48. 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?
802.1Q and ISL
Data link
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
Configure the switch so that it has lower priority than other switches in the network

49. Which of following VLAN frame encapsulation types are configurable on a Cisco switch?
The sequence number in the TCP header.
802.1Q and ISL
Half-duplex Ethernet uses a loopback circuit to detect collisions. and Full-duplex Ethernet makes use of two pairs of wires for data.
To prevent switching loops in networks with redundant switched paths.

50. 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 sequence number in the TCP header.
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.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
It operates without collisions and It provides faster data transfer

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