CCNA Exploration 1: Network Fundamentals – Final exam

01. When connectionless protocols are implemented at the lower layers of the OSI model, what is usually used to acknowledge that the data was received and to request the retransmission of missing data?

• IP
• UDP
• Ethernet
• a connectionless acknowledgement
• an upper-layer, connection-oriented protocol or service

02. Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices?

• Connection 1 – rollover cable
  Connection 2 – straight-through cable
  Connection 3 – crossover cable

• Connection 1 – crossover cable
  Connection 2 – rollover cable
  Connection 3 – crossover cable
  
  

• Connection 1 – straight-through cable
  Connection 2 – crossover cable
  Connection 3 – crossover cable

• Connection 1 – straight-through cable
  Connection 2 – crossover cable
  Connection 3 – straight-through cable

• Connection 1 – crossover cable
  Connection 2 – straight-through cable
  Connection 3 – crossover cable

03. Which OSI layer does IP rely on to determine whether packets have been lost and to request retransmission?

• application
• presentation
• session
• transport

04. Refer to the exhibit. What is the correct destination socket number for a web page request from Host A to the web server?

• 00-08-a3-b6-ce-46
• 198.133.219.25:80
• http://www.cisco.com
• C 198.133.219.0/24 is directly connected, FastEthernet0/0

05. A PC can not connect to any remote websites, ping its default gateway, or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC?

• Use the ipconfig /all command at the host’s command prompt.
• Use the ping 127.0.0.1 command at the command prompt.
• Use the traceroute command at the command prompt to identify any failures on the path to the gateway.
• Use FTP to check for connectivity to remote sites.
• Download a troubleshooting tool from the PC manufacturer’s website.

06. Which type of media is immune to EMI and RFI? (Choose two.)

• 10 Base-T
• 10 Base-2
• 10 Base-5
• 100 Base-FX
• 100 Base TX
• 1000 Base LX

07. Refer to the exhibit. The command that is shown was issued on a PC. What does the IP address 192.168.33.2 represent?

• IP address of the host
• default gateway of the host
• IP address of the homepage for the host
• primary domain name server for the host
• IP address of the website resolver1.mooki.local

08. Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correctly identifies the component or protocol used at each numbered stage of the diagram.

• 1.MUA 2.MDA 3.MTA 4.SMTP 5.MTA 6.POP 7.MDA 8.MUA
• 1.MUA 2.POP 3.MDA 4.SMTP 5.MTA 6.MDA 7.SMTP 8.MUA
• 1.MUA 2.POP 3.SMTP 4.MDA 5.MTA 6.SMTP 7.POP 8.MUA
• 1.MDA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MUA 7.POP 8.MDA
• 1.MUA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MDA 7.POP 8.MUA

09. What is true regarding network layer addressing? (Choose three)

• uses a flat structure
• prevent broadcasts
• heirarchical
• uniquely identifies each host
• 48 bits in length
• contains a network portion

10. Which OSI layers offers reliable, connection-oriented data communication services?

• application
• presentation
• session
• transport
• network

11. Examine the graphic with current configurations. Host A in the Clerical offices failed and was replaced. Although a ping to 127.0.0.1 was successful, the replacement computer can not access the company network. What is the likely cause of the problem?

• IP address incorrectly entered
• network cables unplugged
• subnet mask incorrectly entered
• network card failure

12. Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?

• leaving host A
• leaving ATL
• leaving Dallas
• leaving NYC

13. Refer to the exhibit. What two facts can be determined from the information that is given? (Choose two.)

• This exchange is part of the three-way handshake.
• The source port indicates that a Telnet session has been initiated.
• The data is flowing from server to client.
• The destination port indicates that an HTTP session has been initiated.
• The data listed is associated with the transport layer.
• The source port does not support communication with the destination port that is listed.

14. Refer to the exhibit. On the basis of the IP configuration that is shown, what is the reason that Host A and Host B are unable to communicate outside the local network?

• Host A was assigned a network address.
• Host B was assigned a multicast address.
• Host A and Host B belong to different networks.
• The gateway address was assigned a broadcast address.

15. Which of the following are the address ranges of the private IP addresses? (Choose three.)

• 10.0.0.0 to 10.255.255.255
• 200.100.50.0 to 200.100.25.255
• 150.150.0.0 to 150.150.255.255
• 172.16.0.0 to 172.31.255.255
• 192.168.0.0 to 192.168.255.255
• 127.16.0.0 to 127.31.255.255

16. Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255?

• 172.16.128.0 255.255.255.224
• 172.16.128.0 255.255.0.0
• 172.16.128.0 255.255.192.0
• 172.16.128.0 255.255.224.0
• 172.16.128.0 255.255.255.192

17. Which password is automatically encrypted when it is created?

• vty
• aux
• console
• enable secret
• enable password

18. Which three statements characterize the transport layer protocols? (Choose three.)

• TCP and UDP port numbers are used by application layer protocols.










• TCP uses port numbers to provide reliable transportation of IP packets.






• UDP uses windowing and acknowledgments for reliable transfer of data.






• TCP uses windowing and sequencing to provide reliable transfer of data.






• TCP is a connection-oriented protocol. UDP is a connectionless protocol.

19. When must a router serial interface be configured with the clock rate command?

• when the interface is functioning as a DTE device
• when the interface timers have been cleared
• when the connected DTE device is shut down
• when the interface is functioning as a DCE device

20. Which two functions of the OSI model occur at layer two? (Choose two.)

• physical addressing
• encoding
• routing
• cabling
• media access control

21. A routing issue has occurred in you internetwork. Which of the following type of devices should be examined to isolate this error?

• access point
• host
• hub
• router
• switch

22. Refer to the exhibit. With the router running NAT, what IP addresses can be applied to the computer to allow access to the Internet? (Choose three)

• 192.168.18.38
• 192.168.18.48
• 192.168.18.49
• 192.168.18.52
• 192.168.18.59
• 192.168.18.63

23. Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two)

Router(config)# line vty 0 3
Router(config-line)# password c13c0
Router(config-line)# login

• The entries specify three Telnet lines for remote access.
• The entries specify four Telnet lines for remote access.
• The entries set the console and Telnet password to “c13c0″.
• Telnet access will be denied because the Telnet configuration is incomplete.
• Access will be permitted for Telnet using “c13c0″ as the password.

24. As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?

• 255.255.0.0
• 255.255.248.0
• 255.255.252.0
• 255.255.254.0
• 255.255.255.0
• 255.255.255.128

25. Refer to the exhibit. A network administrator remotely accesses the CLI of RouterB from PC1 using Telnet. Which statement is true about this connection?

• The data is automatically encrypted.
• A Telnet server process is running on PC1.
• The connection is made through a VTY session on the router.
• A GET request was sent to RouterB to retrieve data during this session.

26. Refer to the exhibit. Cable 1 and cable 2 have the ends wired for specific physical layer requirements. The table lists each segment by number and the cable which has been installed by the network technician between the network components on that segment. From the data given, which segments have the correct cable installed? (Choose three.)

• segment1
• segment2
• segment3
• segment4
• segment5

27.  Refer to the exhibit. What three statements are true about the IP configuration that is shown? (Choose three.)

• The address that is assigned to the computer represents private addressing.
• The computer is unable to communicate outside of the local network.
• The network of this computer can have 126 hosts.
• The prefix of the computer address is /27.
• The IP address that is assigned to the computer is routable on the Internet.
• The IP address that is assigned to the computer is a broadcast address.

28. Which three IPv4 addresses represent a broadcast for a subnet? (Choose three.)

• 172.16.4.63 /26
• 172.16.4.129 /26
• 172.16.4.191 /26
• 172.16.4.51 /27
• 172.16.4.95 /27
• 172.16.4.221 /27

29. Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?

• IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2
• IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17
• IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18
• IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5
• IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1
• IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18

30. The Layer 4 header contains which type of information to aid in the delivery of data?

• service port number
• host logical address
• device physical address
• virtual connection identifier

31. During the encapsulation process, which identifiers are added at the transport layer?

• two networks routing the packets
• two applications communicating the data
• two hosts at either end of the communication
• two nodes on the local network exchanging the frame

32. Refer to the exhibit. Assume all devices are using default configurations. How many subnets are required to address the topology that is shown?

• 1
• 3
• 4
• 5
• 7

33. Refer to the exhibit. Which logical topology best describes the exhibited network?

• star
• ring
• point-to-point
• multiaccess
• mesh

34. Refer to the exhibit. Host A is transmitting data to host B. What addresses will host A use to for the destination IP
and MAC addresses in this communication?

• Destination MAC: BBBB:BBBB:BBBB Destination IP: 172.22.0.62
• Destination MAC: DDDD:DDDD:DDDD Destination IP: 172.22.0.75
• Destination MAC: EEEE:EEEE:EEEE Destination IP: 172.22.0.62
• Destination MAC: BBBB:BBBB:BBBB Destination IP: 172.22.0.75
• Destination MAC: EEEE:EEEE:EEEE Destination IP: 172.22.0.75
• Destination MAC: DDDD:DDDD:DDDD Destination IP: 172.22.0.94

35. Refer to the exhibit. A router, whose table is shown, receives a packet that is destined for 192.168.1.4. How will router treat the packet?

• The packet will be dropped.
• The packet will be forwarded via FastEthernet 0/0.
• The packet will be forwarded to the destination host.
• The packet will be forwarded to the 192.168.1.3 next-hop address.

36. Refer to the exhibit. Which set of devices contains only intermediary devices?

• A, B, D, G
• A, B, E, F
• C, D, G, I
• G, H, I, J

37.  Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational?

• 127.0.0.1
• 192.168.64.196
• 192.168.254.1
• 192.168.254.9
• 192.168.254.254

38. Which prompt represents the appropriate mode used for the copy running-config startup-config command ?

• Switch-6J>
• Switch-6J#
• Switch-6J(config)#
• Switch-6J(config-if)#
• Switch-6J(config-line)#

39. A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure?

• console
• enable
• enable secret
• VTY

40. Which range of port numbers are reserved for services that are commonly used by applications that run on servers?

• 0 to 255
• 0 to 1023
• 1024 to 49151
• 49152 to 65535

41. Refer to the exhibit. Which two statements describe the information that is represented in the header? (Choose two)

• This is a server response.
• The UDP protocol is being used.
• The destination port indicates a Telnet session.
• The return segment will contain a source port of 23.
• The next session originated from the client of this session will use the source port number 13358.

42. In a Cisco IOS device, where is the startup-configuration file stored?

• Flash
• NVRAM
• RAM
• ROM

43.  Refer to the exhibit. What two facts can be determined about the exhibited topology? (Choose two)

• A single broadcast domain is present
• Two logical address ranges are required.
• Three broadcast domains are shown.
• Four networks are needed.
• Five collision domains exist.

44. What are three characteristics of CSMA/CD? (Choose three)

• Devices can be configured with a higher transmission priority.
• A jam signal indicates that the collision has cleared and the media is not busy.
• A device listens and waits until the media is not busy before transmitting.
• The device with the electronic token is the only one that can transmit after a collision.
• All of the devices on a segment see data that passes on the network medium.
• After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.

45. Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on Router1?

• an FTP client
• a Telnet client
• a terminal emulation program
• a web browser

46. Refer to the exhibit. The tracert command is initiated from PC1 to PC4. Which device will send a response to the initial tracert packet from PC1?

• Athens
• Ankara
• London
• Paris
• PC4

47. Refer to the exhibit. When computer A sends a frame to computer D, what computers receive the frame?

• only computer D
• only computer A and computer D
• only computer B, computer C, and computer D
• all computers

48. Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network?

• address translation
• DHCP services
• ftpd
• web server

49. Refer to the exhibit. The network containing router B is experiencing problems. A network associate has isolated the issue in this network to router B. What action can be preformed to correct the network issue?

• issue the clock rate command on interface Serial 0/0/0
• issue the description command on interface Serial 0/0/1
• issue the ip address command on interface FastEthernet 0/0
• issue the no shutdown command on interface FastEthernet 0/1

CCNA Exploration 4,0: Network Fundamentals – Chapter 9 Exam

Chapter 9 Exam Answer
Disclaimer: This questionnaires are just for revision purpose!



01. Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.

• 85
• 90
• BA
• A1
• B3
• 1C

02. Which of the following describe interframe spacing? (Choose two.)

• the minimum interval, measured in bit-times, that any station must wait before sending another frame
• the maximum interval, measured in bit-times, that any station must wait before sending another frame
• the 96-bit payload padding inserted into a frame to achieve a legal frame size
• the 96-bit frame padding transmitted between frames to achieve proper synchronization
• the time allowed for slow stations to process a frame and prepare for the next frame
• the maximum interval within which a station must send another frame to avoid being considered unreachable

03. When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?

• The hosts return to a listen-before-transmit mode.
• The hosts creating the collision have priority to send data.
• The hosts creating the collision retransmit the last 16 frames.
• The hosts extend their delay period to allow for rapid transmission.

04. After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data?

• the device involved in the collision with the lowest MAC address
• the device involved in the collision with the lowest IP address
• any device in the collision domain whose backoff timer expires first
• those that began transmitting at the same time

05. Which of the following is a drawback of the CSMA/CD access method?

• Collisions can decrease network performance.
• It is more complex than non-deterministic protocols.
• Deterministic media access protocols slow network performance.
• CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.

06. Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?

• No collisions will occur on this link.
• Only one of the devices can transmit at a time.
• The switch will have priority for transmitting data.
• The devices will default back to half duplex if excessive collisions occur.

07. Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?

• A random delay is used to ensure a collision-free link.
• A random delay value for each device is assigned by the manufacturer.
• A standard delay value could not be agreed upon among networking device vendors.
• A random delay helps prevent the stations from experiencing another collision during the transmission.

08. In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?

• Host B can transmit immediately since it is connected on its own cable segment.
• Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
• Host B must send a request signal to Host A by transmitting an interframe gap.
• Host B must wait until it is certain that Host A has completed sending its frame.

09. Ethernet operates at which layers of the OSI model? (Choose two.)

• Network layer
• Transport layer
• Physical layer
• Application layer
• Session layer
• Data-link layer

10. What does the IEEE 802.2 standard represent in Ethernet technologies?

• MAC sublayer
• Physical layer
• Logical Link Control sublayer
• Network layer

11. Which statements correctly describe MAC addresses? (Choose three.)

• dynamically assigned
• copied into RAM during system startup
• layer 3 address
• contains a 3 byte OUI
• 6 bytes long
• 32 bits long

12. Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.)

• A packet with the destination IP of Router_B.
• A frame with the destination MAC address of Switch_A.
• A packet with the destination IP of Router_A.
• A frame with the destination MAC address of Router_A.
• A packet with the destination IP of Server_B.
• A frame with the destination MAC address of Server_B.

13. Host A has an IP address of 172.16.225.93, a mask of 255.255.248.0, and a default gateway of 172.16.224.1. Host A needs to send a packet to a new host whose IP is 172.16.231.78. Host A performs the ANDing operation on its address and subnet mask. What two things will occur? (Choose two.)

• Host A will get a result of 172.16.224.0 from the AND process.
• Host A will send on to the media a broadcast frame that contains the packet.
• Host A will broadcast an ARP request for the MAC of the host 172.16.231.78.
• Host A will change the destination IP of the packet to 172.16.224.1 and forward the packet.
• Host A will encapsulate the packet in a frame with a destination MAC that is the MAC address associated with 172.16.224.1.

14. Which two features make switches preferable to hubs in Ethernet-based networks? (Choose two.)

• reduction in cross-talk
• minimizing of collisions
• support for UTP cabling
• division into broadcast domains
• increase in the throughput of communications

15. Ethernet operates at which layer of the TCP/IP network model?

• application
• physical
• transport
• internet
• data link
• network access

16. What are three functions of the upper data link sublayer in the OSI model? (Choose three.)

• recognizes streams of bits
• identifies the network layer protocol
• makes the connection with the upper layers
• identifies the source and destination applications
• insulates network layer protocols from changes in physical equipment
• determines the source of a transmission when multiple devices are transmitting

17. What three primary functions does data link layer encapsulation provide? (Choose three.)




• addressing
• error detection
• frame delimiting
• port identification
• path determination
• IP address resolution

18. What are the two most commonly used media types in Ethernet networks today? (Choose two.)

• coaxial thicknet
• copper UTP
• coaxial thinnet
• optical fiber
• shielded twisted pair

19. Refer to the exhibit. Which option correctly identifies content that the frame data field may contain?

• preamble and stop frame
• network layer packet
• physical addressing
• FCS and SoF

20. What is the primary purpose of ARP?

• translate URLs to IP addresses
• resolve IPv4 addresses to MAC addresses
• provide dynamic IP configuration to network devices
• convert internal private addresses to external public addresses

Disclaimer: This questionnaires are just for revision purpose!