CCNA D1 Module 3 Exam Answers

source : CCNA D1 Module 3 Exam Answers

1. What is the purpose of logical addresses in an IP network?
* They are used by switches to make forwarding decisions.
* They are used to determine which host device accepts the frame.
* They provide vendor-specific information about the host.
* They identify a specific NIC on a host device.
* They are used to determine the network that the host is located on.

2. Which two statements concerning networking standards are true? (Choose two.)
* ensures that communications work best in a single-vendor environment
* adds complexity to networks
* simplifies new product development
* provides consistent interconnections across networks
* encourages vendors to create proprietary protocols

3. Refer to the graphic. Five PCs are connected through a hub. If host H1 wants to reply to a message from host H2, which statement is true?
* H1 sends a broadcast message to H2, and the hub forwards it to all devices.
* H1 sends a unicast message to H2, and the hub forwards it directly to H2.
* H1 sends a unicast message to H2, but the hub forwards it to all devices
* H1 sends a multicast message to H2, and the hub forwards it directly to H2.

4. Which term is used to describe the process of placing one message format into another format so that the message can be delivered across the appropriate medium?
* multicasting
* flow control
* access method
* encoding
* encapsulation

5. What does the 100 mean when referencing the 100BASE-T Ethernet standard?
* type of data transmission
* type of connector required
* type of cable used
* speed of transmission
* maximum length of cable allowed

6. Which device accepts a message on one port and always forwards the message to all other ports
* hub
* switch* modem* router

7. What is the function of the FCS field in an Ethernet frame?
* provides timing for transmission* detects transmission errors* contains the start of frame delimiter
* indicates which protocol will receive the frame

8. Which address does an NIC use when deciding whether to accept a frame?
* source MAC address
* source Ethernet address
* destination IP address
* destination MAC address
* source IP address


9. Which two networking devices are used to connect hosts to the access layer? (Choose two.)
* router
* hub
* switch
* server
* computer

10. An integrated router can normally perform the functions of which two other network devices? (Choose two.)
* switch
* application server
* wireless access point
* e-mail server
* NIC

11. Host A needs to learn the MAC address of Host B, which is on the same LAN segment. A message has been sent to all the hosts on the segment asking for the MAC address of Host B. Host B responds with its MAC address and all other hosts disregard the request. What protocol was used in this scenario?
* ARP
* DHCP
* DNS
* WINS

12. Which two items are included in a network logical map? (Choose two.)
* length of cable runs
* naming scheme
* specific layout of interconnections between networking devices and hosts
* IP addressing scheme
* physical location of networking devices

13. Which type of address is used in an Ethernet frame header?
* IP addresses only
* MAC addresses only
* logical addresses only
* broadcast addresses only

14. A switch receives a frame with a destination MAC address that is currently not in the MAC table. What action does the switch perform?
* It sends out an ARP request looking for the MAC address.
* It drops the frame.
* It floods the frame out of all active ports, except the origination port.
* It returns the frame to the sender.

15. Which table does a router use to make decisions on where a data packet is to be sent?
* network table
* forwarding table
* routing table
* ARP table

16. If the default gateway is configured incorrectly on the host, what is the impact on communications?
* The host is unable to communicate on the local network.
* There is no impact on communications.
* The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
* The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.

17. What is a benefit of having a router within the distribution layer?
* controls host-to-host traffic within a single local network
* keeps broadcasts contained within a local network
* prevents collisions on a local network
* controls which hosts have access to the network

18. What device is typically used as the default gateway for a computer?
* the router interface closest to the computer
* a server managed by a central IT department
* a server hosted by the ISP
* the switch interface that connects to the computer

19. If a router receives a packet that it does not know how to forward, what type of route must be configured on the router to prevent the router from dropping it?
* default route
* default destination
* dynamic route
* destination route

20. What is a reason for disabling simple file sharing?
* It enables the user to set more specific security access levels.
* It enables the user to share all files with all users and groups.
* It enables the user to share printers.
* It enables the user to map a remote resource with a local drive.

21. Refer to the graphic. What does the router do after it determines that a data packet from Network 1 should be forwarded to Network 2?
* It reassembles the data packet with different IP addresses than the original data packet.
* It reassembles the frame with different MAC addresses than the original frame.
* It reassembles both the packet and the frame with different destination IP and MAC addresses.
* It sends the data packet as it was received.