Quiz About CCNA 1 Chapter 3

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  • 1/21 Questions

    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? 

    • Flow control
    • Encapsulation
    • Encoding
    • Multi-casting
    • Access method
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About This Quiz

This quiz focuses on CCNA 1, Chapter 3, exploring key networking concepts such as encapsulation, Ethernet standards, and MAC addressing. It assesses understanding of network communication mechanisms and standards, crucial for professionals in network engineering and IT.

Quiz About CCNA 1 Chapter 3 - Quiz

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  • 2. 
    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? - ProProfs

    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 unicast message to H2, but 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 broadcast message to H2, and the hub forwards it to all devices.

    • H1 sends a multicast message to H2, and the hub forwards it directly to H2.

    Correct Answer
    A. H1 sends a unicast message to H2, but the hub forwards it to all devices.
    Explanation
    The correct answer is H1 sends a unicast message to H2, but the hub forwards it to all devices. This is because a hub operates at the physical layer of the OSI model and does not have any intelligence to differentiate between devices. When H1 sends a unicast message to H2, the hub simply forwards it to all devices connected to it, including H2.

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  • 3. 

    Which two statements concerning networking standards are true? (Choose two.) 

    • Adds complexity to networks

    • Encourages vendors to create proprietary protocols

    • Provides consistent interconnections across networks

    • Ensures that communications work best in a single-vendor environment

    • Simplifies new product development

    Correct Answer(s)
    A. Provides consistent interconnections across networks
    A. Simplifies new product development
    Explanation
    The correct answer is "provides consistent interconnections across networks" and "simplifies new product development". Networking standards ensure that different devices and systems can communicate with each other effectively, regardless of the vendor or technology being used. This consistency in interconnections allows for seamless integration of various network components. Additionally, having standardized protocols simplifies the development of new products as manufacturers can rely on established standards rather than creating proprietary protocols from scratch.

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  • 4. 

    What does the 100 mean when referencing the 100BASE-T Ethernet standard? 

    • Type of cable used

    • Type of data transmission

    • Speed of transmission

    • Type of connector required

    • Maximum length of cable allowed

    Correct Answer
    A. Speed of transmission
    Explanation
    The 100 in 100BASE-T Ethernet standard refers to the speed of transmission. This standard supports a maximum data transfer rate of 100 megabits per second (Mbps).

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  • 5. 

    Which address does an NIC use when deciding whether to accept a frame? 

    • Source IP address

    • Source MAC address

    • Destination IP address

    • Destination MAC address

    • Source Ethernet address

    Correct Answer
    A. Destination MAC address
    Explanation
    An NIC (Network Interface Card) uses the destination MAC address when deciding whether to accept a frame. The destination MAC address is a unique identifier assigned to the NIC of the intended recipient of the frame. When a frame is received, the NIC checks if the destination MAC address matches its own MAC address. If it does, the NIC accepts the frame and processes it. If the destination MAC address does not match, the NIC discards the frame as it is not intended for it.

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  • 6. 

    Which type of address is used in an Ethernet frame header? 

    • Logical addresses only

    • IP addresses only

    • MAC addresses only

    • Broadcast addresses only

    Correct Answer
    A. MAC addresses only
    Explanation
    The correct answer is MAC addresses only. In an Ethernet frame header, only MAC addresses are used. MAC addresses are unique identifiers assigned to network interface controllers (NICs) by the manufacturer. They are used to identify the source and destination devices in a local area network (LAN) environment. Logical addresses, such as IP addresses, are used at the network layer and are encapsulated within the Ethernet frame. Broadcast addresses are used to send a message to all devices on a network.

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  • 7. 

    What is the function of the FCS field in an Ethernet frame? 

    • Detects transmission errors

    • provides timing for transmission

    • Contains the start of frame delimiter

    • Indicates which protocol will receive the frame

    Correct Answer
    A. Detects transmission errors
    Explanation
    The FCS field in an Ethernet frame is responsible for detecting transmission errors. It is a checksum value calculated by the sender and appended to the frame. When the frame is received, the recipient recalculates the checksum and compares it to the value in the FCS field. If the values match, it indicates that the frame was transmitted without errors. If they don't match, it means that errors occurred during transmission, and the frame is discarded.

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  • 8. 

    What is the purpose of logical addresses in an IP network?

    • They identify a specific NIC on a host device.

    • They are used to determine which host device accepts the frame.

    • They provide vendor-specific information about the host.

    • They are used to determine the network that the host is located on.

    • They are used by switches to make forwarding decisions.

    Correct Answer
    A. They are used to determine the network that the host is located on.
    Explanation
    Logical addresses in an IP network are used to determine the network that the host is located on. These addresses help in identifying the network portion of an IP address, which is crucial for routing packets across different networks. By using logical addresses, routers can make forwarding decisions based on the network information and route the packets to the appropriate destination network. This allows for efficient communication between different hosts on different networks within the IP network infrastructure.

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  • 9. 

    Which device accepts a message on one port and always forwards the message to all other ports? 

    • modem

    • switch

    • router

    • hub

    Correct Answer
    A. hub
    Explanation
    A hub is a networking device that accepts a message on one port and forwards the message to all other ports. Unlike a switch or a router, a hub does not have the ability to filter or direct traffic to specific ports based on the destination. Instead, it simply broadcasts the message to all connected devices. This makes a hub less efficient in terms of network performance and security compared to switches or routers.

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  • 10. 

    Which two networking devices are used to connect hosts to the access layer? (Choose two)

    • Router

    • Hub

    • Switch

    • Server

    • Computer

    Correct Answer(s)
    A. Hub
    A. Switch
    Explanation
    A hub and a switch are used to connect hosts to the access layer in a network. A hub is a simple device that broadcasts all incoming data packets to all connected devices, while a switch is more intelligent and selectively forwards data packets to the intended destination based on their MAC addresses. Both devices provide connectivity between hosts and the network, but a switch offers better performance and security compared to a hub.

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  • 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

    Correct Answer
    A. ARP
    Explanation
    In this scenario, the protocol used is ARP (Address Resolution Protocol). ARP is used to map an IP address to a MAC address on a local network. Host A sends a message to all the hosts on the segment asking for the MAC address of Host B. Host B responds with its MAC address, allowing Host A to learn it. The other hosts disregard the request as it is not intended for them. DHCP (Dynamic Host Configuration Protocol) is used to assign IP addresses to devices on a network, DNS (Domain Name System) is used to translate domain names to IP addresses, and WINS (Windows Internet Name Service) is a legacy protocol used in older versions of Windows for name resolution.

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  • 12. 

    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 drops the frame.

    • It sends out an ARP request looking for the MAC address.

    • It floods the frame out of all active ports, except the origination port.

    • It returns the frame to the sender.

    Correct Answer
    A. It floods the frame out of all active ports, except the origination port.
    Explanation
    When a switch receives a frame with a destination MAC address that is not in the MAC table, it will flood the frame out of all active ports, except the port from which the frame originated. This is because the switch does not have information about the destination MAC address and needs to send the frame to all connected devices in order to find the correct destination. By flooding the frame, the switch increases the chances of reaching the correct destination device.

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  • 13. 

    What is a benefit of having a router within the distribution layer? 

    • Prevents collisions on a local network

    • keeps broadcasts contained within a local network

    • Controls which hosts have access to the network

    • Controls host-to-host traffic within a single local network

    Correct Answer
    A. keeps broadcasts contained within a local network
    Explanation
    Having a router within the distribution layer helps to keep broadcasts contained within a local network. This means that broadcast traffic is not propagated to other networks, reducing network congestion and improving overall network performance. By containing broadcasts, the router helps to ensure that network resources are not wasted on unnecessary traffic and that only devices within the local network receive the broadcast messages. This also enhances network security by preventing the broadcast traffic from reaching unauthorized networks or devices.

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  • 14. 
    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?  - ProProfs

    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 sends the data packet as it was received.

    • It reassembles the frame with different MAC addresses than the original frame.

    • It reassembles the data packet with different IP addresses than the original data packet.

    • It reassembles both the packet and the frame with different destination IP and MAC addresses.

    Correct Answer
    A. It reassembles the frame with different MAC addresses than the original frame.
    Explanation
    After determining that a data packet from Network 1 should be forwarded to Network 2, the router reassembles the frame with different MAC addresses than the original frame.

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  • 15. 

    Which table does a router use to make decisions on where a data packet is to be sent? 

    • ARP table

    • Routing table

    • Network table

    • Forwarding table

    Correct Answer
    A. Routing table
    Explanation
    A router uses a routing table to make decisions on where a data packet is to be sent. The routing table contains information about various networks and their corresponding next-hop routers. By referencing this table, the router can determine the most appropriate path for the data packet to reach its destination. The routing table is crucial for the router to efficiently direct network traffic and ensure that data packets are delivered to the correct destination.

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  • 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.

    • 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.

    • There is no impact on communications.

    Correct Answer
    A. The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
    Explanation
    If the default gateway is configured incorrectly on the host, the impact on communications is that the host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks. The default gateway is responsible for routing traffic between different networks, so if it is set incorrectly, the host will not be able to send data to hosts outside of its local network.

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  • 17. 

    What device is typically used as the default gateway for a computer? 

    • A server hosted by the ISP

    • The router interface closest to the computer

    • A server managed by a central IT department

    • The switch interface that connects to the computer

    Correct Answer
    A. The router interface closest to the computer
    Explanation
    The default gateway is the IP address of the router interface that connects directly to the computer. It is responsible for forwarding network traffic between different networks. The router interface closest to the computer is the most logical choice for the default gateway as it provides the shortest path for the computer to communicate with devices outside of its own network.

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  • 18. 

    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? 

    • Dynamic route

    • Default route

    • Destination route

    • Default destination

    Correct Answer
    A. Default route
    Explanation
    A default route must be configured on the router to prevent it from dropping packets that it does not know how to forward. A default route acts as a "catch-all" route, instructing the router to send any packets with unknown destinations to a specific next hop or gateway. By having a default route, the router ensures that even if it doesn't have a specific route for a packet, it will still be able to forward it to the appropriate destination instead of dropping it.

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  • 19. 

    Which two items are included in a network logical map? (Choose two.) 

    • Naming scheme

    • IP addressing scheme

    • Length of cable runs

    • Physical location of networking devices

    • Specific layout of interconnections between networking devices and hosts

    Correct Answer(s)
    A. Naming scheme
    A. IP addressing scheme
    Explanation
    A network logical map includes the naming scheme and IP addressing scheme. The naming scheme refers to the way devices and hosts are identified and labeled within the network. It provides a standardized method for naming and organizing network components. The IP addressing scheme, on the other hand, is the allocation and management of IP addresses within the network. It defines how devices are assigned unique IP addresses and allows for communication between them. Both the naming scheme and IP addressing scheme are essential components of a network logical map as they provide a structured and organized framework for network management.

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  • 20. 

    An integrated router can normally perform the functions of which two other network devices? (Choose two

    • NIC

    • Switch

    • E-mail server

    • Application server

    • Wireless access point

    Correct Answer(s)
    A. Switch
    A. Wireless access point
    Explanation
    An integrated router can perform the functions of a switch and a wireless access point. A switch is a network device that connects multiple devices within a local area network (LAN), allowing them to communicate with each other. A wireless access point, on the other hand, enables wireless devices to connect to a wired network. An integrated router combines the functionality of both devices, allowing it to route network traffic and provide wireless connectivity. This eliminates the need for separate switches and wireless access points in a network setup.

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  • 21. 

    What is a reason for disabling simple file sharing? 

    • It enables the user to map a remote resource with a local drive.

    • 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 set more specific security access levels.

    Correct Answer
    A. It enables the user to set more specific security access levels.
    Explanation
    Disabling simple file sharing allows the user to set more specific security access levels. With simple file sharing enabled, all files are shared with all users and groups, which can pose a security risk. By disabling it, the user gains more control over who can access and modify their files, ensuring that only authorized users have the necessary permissions.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 17, 2010
    Quiz Created by
    Nysokheng

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