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CCNA Hard

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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 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
This is an Ethernet port operating at half duplex
Hosts use a logical bus topology
The switch will forward the frame to a specific port

2. 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
Path selections and Packet switching.
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 network layer
The switch will forward the frame to a specific port

3. Two stations on the Certkiller LAN transmit at the same time - resulting in a collision. What happens when a collision occurs on the network?
Network
HTTPS - SMTP - and TFTP
Decrease the window size.
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.

4. 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 broadcast address will never be the source address of a frame
VLAN and Swtich
Configure the switch so that it has lower priority than other switches in the network
Telnet and FTP

5. 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
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.
802.1Q and ISL
100 meters

6. 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?
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
To allow remote management of the switch.
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.
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.

7. What are two characteristics of 'store and forward' switching?
STP
VTP
The network layer
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

8. When you compare the differences between half-duplex and full-duplex Ethernet - which of the following characteristics are exclusive to half-duplex?
Data link
ARP and ICMP
Fiber optic cable.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.

9. Which OSI layer header contains the address of a destination host that is on another network?
A broadcast domain with too many hosts - Broadcast storms - and Low 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.
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Network

10. 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?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
It is the sum of the costs based on bandwidth
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.
VLAN and Swtich

11. 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.
Increased latency and Filtering of all frame errors
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
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

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
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
The network layer
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

13. 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?
Auto - On - and Desirable
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
100 meters
The switch will forward the frame to a specific port

14. Why is full-duplex Ethernet superior to its single-duplex counterpart?
Application
VTP
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
It operates without collisions and It provides faster data transfer

15. Which of the following are spanning tree port states?
Switches - Bridges - and Routers
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
Learning - Listening - and Forwarding

16. Which of the following are types of flow control?
Port security
Buffering - Cut-through - and Congestion avoidance
Sequence number - Window size - and Acknowledgment number
A hub and A repeater.

17. 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?
Application
Increased latency and Filtering of all frame errors
Decrease the window size.
To allow remote management of the switch.

18. Certkiller has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
Telnet and FTP
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.
VTP will allow switches to share VLAN configuration information
An electrical pulse indicates that the collision has cleared.

19. CK1 is a switch in the Certkiller network. Why will CK1 never learn the broadcast address?
SMTP FTP and HTTP
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
A broadcast address will never be the source address of a frame
It operates without collisions and It provides faster data transfer

20. 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?
The system is malfunctioning.
The network layer
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
VTP will allow switches to share VLAN configuration information

21. 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.)
The interfaces must be configured for NAT.
MAC Address and Bridge Priority
Half-duplex Ethernet operates in a shared collision domain. and Half-duplex Ethernet has lower effective throughput.
Application

22. When a switch port is used as a VLAN trunk - which of the following trunk modes are valid?
Auto - Desirable - and On
A CSU/DSU terminates a digital local loop - A modem terminates an analog local loop - A router is commonly considered a DTE device.
To allow remote management of the switch.
A hub and A repeater.

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?
Application
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
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.

24. 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?
Network
Sequence number - Window size - and Acknowledgment number
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
100 meters

25. Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
A cross-over cable
CertK Switch(config)# ip default-gateway 192.168.1.115
Serial0/1 is down - line protocol is down
The switch receives the complete frame before beginning to forward it. and Latency through the switch varies with frame length

26. 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?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
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.
Certkiller B > trace
Congestion avoidance - Windowing and Buffering

27. 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 hub and A repeater.
Certkiller B > trace
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Switches increase the number of collision domains in the network.

28. 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?
A hub and A repeater.
This is an Ethernet port operating at half duplex
TCP
Network

29. 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)
A broadcast domain with too many hosts - Broadcast storms - and Low bandwidth
The system is malfunctioning.
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

30. At which layer of the OSI model does the protocol that provides the information displayed by the 'show cdp neighbors' command operate?
802.3ab and 802.3z
Show arp and Show interface
Port security
Data link

31. Which of the following correctly describe steps in the OSI date encapsulation process?
Packet switching - Packet filtering and Internetwork communication.
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
Increased latency and Filtering of all frame errors
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.

32. Which three statements are true about the operation of a full-duplex Ethernet network - which is being used in the Certkiller LAN?
Source Port - Acknowledgment Number - and Window
Sequence number - Window size - and Acknowledgment number
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.
Physical Layer and Datalink Layer

33. 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?
Full-duplex Ethernet can provide higher throughout than can half-duplex Ethernet of the same bandwidth
CertK Switch(config)# ip default-gateway 192.168.1.115
The sequence number in the TCP header.
TCP

34. 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
Encapsulations PPP and authentication CHAP
HTTPS - SMTP - and TFTP
The sequence number in the TCP header.
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.

35. Which of the following can lead to the contribution of LAN traffic congestion?
MAC Address and Bridge Priority
Too many hosts in a broadcast domain - Broadcast storms and Low bandwidth
Serial0/1 is down - line protocol is down
Layer 4

36. 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
HTTPS - SMTP - and TFTP
Buffering - Cut-through - and Congestion avoidance
TCP
VLAN and Swtich

37. Which OSI layer is associated with the following: The acknowledgment of transmissions - sequencing - and flow control across a network?
Certkiller B > trace
Device Identifiers - Capabilities list - Platform
Layer 4
Data link

38. By default - which of the following factors determines the spanning-tree path cost?
Allowing simultaneous frame transmissions and filtering frames based on MAC addresses
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.
Decrease the window size.
It is the sum of the costs based on bandwidth

39. 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?
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
An electrical pulse indicates that the collision has cleared.
Application

40. What kind of cable should be used to establish a trunked line between two Catalyst switches?
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.
Encapsulations PPP and authentication CHAP
The interfaces must be configured for NAT.
A cross-over cable

41. What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
All switch and bridge ports are in either the forwarding or blocking state.
SMTP FTP and HTTP
It is the sum of the costs based on bandwidth

42. 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 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 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.
Configure the switch so that it has lower priority than other switches in the network
Serial0/1 is down - line protocol is down

43. Which of the protocols below - operates at Layer 2 of the OSI model - and is used to maintain a loop-free network?
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
STP
Fiber optic cable.
802.3ab and 802.3z

44. 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
HTTPS
TCP
All switch and bridge ports are in either the forwarding or blocking state.

45. CDP is running between two CK devices. What information is supplied by CDP?
They can provide hosts with information about network problems. and They are encapsulated within IP datagrams.
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 a lower priority than other switches in the network.
Device Identifiers - Capabilities list - Platform

46. 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?
UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
Duplex mismatch
HTTPS - SMTP - and TFTP
Certkiller B > trace

47. 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?
It will prevent segment 1's broadcasts from getting to segment 2.
VTP
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.

48. With regard to Ethernet media access methods - which of the following are true?
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 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
Increased latency and Filtering of all frame errors

49. Cisco is the leader in the router market space. What basic functions do their routers perform in a network?
Fiber optic cable.
In an improperly implemented redundant topology
Path selections and Packet switching.
To allow remote management of the switch.

50. 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.
VLAN and Swtich
Application
It operates without collisions and It provides faster data transfer
Fiber optic cable.

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