CCNA Discovery 1 Chapter 5

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  • 1/21 Questions

    1. How large are IPv4 addresses?

    • 8 bits
    • 16 bits
    • 32 bits
    • 64 bits
    • 128
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About This Quiz


It’s time to move onto the fifth chapter of our studies in the CCNA program – which aims to provide you with a general understanding of networking theory and the practical experience to accompany it. Are you ready to move forward into the next chapter, or do you still have some work to do?

CCNA Discovery 1 Chapter 5 - Quiz

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  • 2. 

    Refer to the graphic. A user at the workstation cannot connect to the server. All cables have been tested and are working and all devices have IP addressing. However, the user cannot ping the server. What is causing the problem? 

    • The router interface does not have a default gateway.

    • The switch does not have an IP address and default gateway.

    • The workstation and server are on different logical networks.

    • The workstation does not know the MAC address of the switch.

    Correct Answer
    A. The workstation and server are on different logical networks.
    Explanation
    The problem is that the workstation and server are on different logical networks. This means that they are not able to communicate with each other because they are not on the same network. In order for the workstation to connect to the server, they must be on the same logical network.

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  • 3. 

    Which part of an IP address identifies a specific device on a network? 

    • First two octets

    • Third and fourth octets

    • Network portion

    • Host portion

    Correct Answer
    A. Host portion
    Explanation
    The host portion of an IP address identifies a specific device on a network. The network portion of the IP address identifies the network to which the device is connected, while the host portion identifies the specific device within that network.

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  • 4. 

    Given a host with the IP address 172.32.65.13 and a default subnet mask, to which network does the host belong? 

    • 172.32.65.0

    • 172.32.65.32

    • 172.32.0.0

    • 172.32.32.0

    Correct Answer
    A. 172.32.0.0
    Explanation
    The given host with the IP address 172.32.65.13 belongs to the network 172.32.0.0. This is because the default subnet mask for this IP address is 255.255.0.0, which means that the first two octets (172.32) represent the network portion of the address, while the last two octets (65.13) represent the host portion. Therefore, the host belongs to the network 172.32.0.0.

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  • 5. 

     Which default subnet mask provides the most host bits? 

    • 255.0.0.0

    • 255.255.0.0

    • 255.255.255.0

    • 255.255.255.255

    Correct Answer
    A. 255.0.0.0
    Explanation
    The subnet mask 255.0.0.0 provides the most host bits because it uses only the first octet to define the network portion of the IP address, leaving the remaining three octets for host addresses. This allows for a larger number of possible host addresses within the network.

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  • 6. 

    How many bits are available for Class B host IP addresses using a default subnet mask? 

    • 4

    • 8

    • 16

    • 24

    Correct Answer
    A. 16
    Explanation
    Class B IP addresses use a default subnet mask of 16 bits. This means that the first 16 bits of the IP address are reserved for the network portion, while the remaining 16 bits are available for the host portion. This allows for a maximum of 65,536 host IP addresses in a Class B network.

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  • 7. 

     How many usable hosts are available given a Class C IP address with the default subnet mask? 

    • 254

    • 255

    • 256

    • 510

    • 511

    • 512

    Correct Answer
    A. 254
    Explanation
    A Class C IP address has a default subnet mask of 255.255.255.0, which means that the network portion of the IP address is 24 bits and the host portion is 8 bits. In a Class C network, the host portion can accommodate 2^8 - 2 addresses (minus 2 for the network and broadcast addresses), which equals 254 usable hosts.

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  • 8. 

    Assuming a default mask, which portion of the IP address 175.124.35.4 represents the host? 

    • 175.124

    • 35.4

    • .4

    • 124.35.4

    • 175.124.35

    Correct Answer
    A. 35.4
    Explanation
    The host portion of an IP address represents the specific device or host on a network. In the given IP address 175.124.35.4, the portion "35.4" represents the host.

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  • 9. 

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

    • 10.1.1.1

    • 172.32.5.2

    • 192.167.10.10

    • 172.16.4.4

    • 192.168.5.5

    • 224.6.6.6

    Correct Answer(s)
    A. 10.1.1.1
    A. 172.16.4.4
    A. 192.168.5.5
    Explanation
    The three IP addresses that are private are 10.1.1.1, 172.16.4.4, and 192.168.5.5. Private IP addresses are reserved for use within private networks and are not routable over the internet. These addresses are commonly used in home and office networks to provide internal communication between devices. The other IP addresses listed are not private and are either public IP addresses or multicast addresses.

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  • 10. 

    What destination IP address is used in a unicast packet? 

    • a specific host

    • a group of hosts

    • The default gateway

    • The network broadcast address

    Correct Answer
    A. a specific host
    Explanation
    A unicast packet is a type of network packet that is sent from one device to a specific destination host. In other words, it is intended for a single recipient. Therefore, the destination IP address used in a unicast packet is the IP address of the specific host to which the packet is being sent.

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  • 11. 

     What is the destination MAC address in a multicast Ethernet frame? 

    • the MAC address of the sending host

    • The MAC address of the destination host

    • An address that begins with 01-00-5E in hexadecimal

    • A 48-bit hexadecimal address expressed as FF-FF-FF-FF-FF-FF

    Correct Answer
    A. An address that begins with 01-00-5E in hexadecimal
    Explanation
    The destination MAC address in a multicast Ethernet frame is an address that begins with 01-00-5E in hexadecimal. Multicast addresses are used to send data to a group of devices rather than a single destination. The first 6 bits of the MAC address are fixed and indicate that it is a multicast address, while the remaining bits can be used to identify a specific multicast group.

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  • 12. 

    . Yvonne is talking to her friend on the phone. What type of message is this?   

    • Broadcast

    • simulcast

    • Multicast

    • unicast

    Correct Answer
    A. unicast
    Explanation
    This type of message is a unicast message because Yvonne is talking to her friend on the phone, which is a one-to-one communication. Unicast messages are sent from one sender to one receiver, making it a suitable description for this scenario.

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  • 13. 

    What information must be included within a unicast message for it to be delivered on an Ethernet network?

    • MAC and IP addresses for the default router

    • IP address and subnet mask of the default gateway

    • MAC and IP addresses that correspond to a destination group

    • MAC and IP addresses that correspond to a specific destination host

    Correct Answer
    A. MAC and IP addresses that correspond to a specific destination host
    Explanation
    To ensure that a unicast message is delivered on an Ethernet network, the message must include the MAC and IP addresses that correspond to a specific destination host. This is because Ethernet networks use MAC addresses to identify and deliver messages to specific devices on the network, while IP addresses are used for routing the message to the correct network. Including both MAC and IP addresses ensures that the message is correctly addressed and delivered to the intended recipient on the Ethernet network.

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  • 14. 

    A PC obtains its IP address from a DHCP server. If the PC is taken off the network for repair, what happens to the IP address configuration?       

    • The configuration is permanent and nothing changes.

    • The address is returned to the pool for reuse when the lease expires.

    • The configuration is held by the server to be reissued when the PC is returned.

    Correct Answer
    A. The address is returned to the pool for reuse when the lease expires.
    Explanation
    When a PC is taken off the network for repair, its IP address configuration is not held by the server. Instead, the address is returned to the pool for reuse when the lease expires. This means that when the PC is back on the network, it will be assigned a new IP address from the pool by the DHCP server.

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  • 15. 

    Which type of server dynamically assigns an IP address to a host? 

    • ARP

    • DHCP

    • DNS

    • RARP

    Correct Answer
    A. DHCP
    Explanation
    DHCP stands for Dynamic Host Configuration Protocol. It is a network protocol that allows a server to dynamically assign IP addresses to hosts on a network. This means that when a device connects to the network, it can request an IP address from the DHCP server, which will then assign an available IP address to that device. This allows for efficient management of IP addresses and simplifies the process of connecting devices to a network.

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  • 16. 

     Which three statements describe a DHCP Discover message? (Choose three.)             Only the DHCP server receives the message. 

    • The source MAC address is 48 ones (FF-FF-FF-FF-FF-FF).

    • The destination IP address is 255.255.255.255.

    • The message comes from a server offering an IP address.

    • The message comes from a client seeking an IP address.

    • All hosts receive the message, but only a DHCP server replies.

    Correct Answer(s)
    A. The destination IP address is 255.255.255.255.
    A. The message comes from a client seeking an IP address.
    A. All hosts receive the message, but only a DHCP server replies.
    Explanation
    A DHCP Discover message is sent by a client seeking an IP address. The destination IP address for this message is 255.255.255.255, which is the broadcast address, indicating that the message is intended for all hosts on the network. All hosts receive the message, but only a DHCP server replies to offer an IP address.

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  • 17. 

    Refer to the graphic. A host connects to a Linksys integrated router that is also a DHCP server and receives an IP address from it. Which address does the host need to access the ISP and the Internet?     

    • IP address of the destination host

    • public gateway IP address of the ISP

    • External IP address of the integrated router that connects to the ISP

    • Internal IP address of the integrated router that connects to the local network

    Correct Answer
    A. Internal IP address of the integrated router that connects to the local network
    Explanation
    The host needs to access the ISP and the Internet through the internal IP address of the integrated router that connects to the local network. This is because the integrated router acts as a gateway for the host to connect to the ISP and the Internet. The internal IP address of the router allows the host to establish a connection and communicate with devices within the local network.

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  • 18. 

     Which statement is true concerning private IP addresses?       

    • Ensures that two networks separated by the Internet use unique IP network numbers

    • Allows internal hosts to communicate with servers across the Internet

    • Solves the issue of a finite number of available public IP addresses

    • allows for ISPs to be able to quickly determine network location

    Correct Answer
    A. Solves the issue of a finite number of available public IP addresses
    Explanation
    Private IP addresses solve the issue of a finite number of available public IP addresses. Public IP addresses are limited, and using private IP addresses allows for more efficient use of these limited resources. Private IP addresses are used within a local network and are not directly accessible from the internet. This allows multiple devices within a network to share a single public IP address, reducing the demand for public IP addresses.

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  • 19. 

    What is one of the purposes of NAT? 

    • filters network traffic based on IP address ranges

    • Prevents external users from detecting the IP addresses used on a network

    • inspects traffic that might be harmful or used in an attack against the network

    • Translates IP addresses into easy-to-remember domain names

    Correct Answer
    A. Prevents external users from detecting the IP addresses used on a network
    Explanation
    NAT (Network Address Translation) is a technique used to hide the internal IP addresses of a network from external users. By translating the internal IP addresses into a single public IP address, it prevents external users from detecting the actual IP addresses used on the network. This adds an extra layer of security by making it difficult for potential attackers to directly access the internal network.

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  • 20. 

    Which two statements describe packets that are sent through a Linksys integrated router using NAT? (Choose two.)     

    • Packets that are sent to hosts on the same network need to be translated.

    • Packets that are sent to a destination outside the local network need to be translated.

    • Packets that are sent to a destination outside a local network do not need to be translated.

    • Packets that are sent between hosts on the same local network do not need to be translated.

    Correct Answer(s)
    A. Packets that are sent to a destination outside the local network need to be translated.
    A. Packets that are sent between hosts on the same local network do not need to be translated.
    Explanation
    When using Network Address Translation (NAT) on a Linksys integrated router, packets that are sent to a destination outside the local network need to be translated. This is because the router acts as a gateway between the local network and the external network, and the source IP address of the packets needs to be changed to the public IP address of the router. On the other hand, packets that are sent between hosts on the same local network do not need to be translated, as they are already within the same network and can communicate directly without the need for NAT.

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  • 21. 

    Refer to the graphic. NAT and DHCP are installed on the Linksys integrated router. Which IP address is most likely to be assigned to the local computer, Host1? 

    • 10.0.0.17

    • 128.107.1.2

    • 192.135.250.0

    • 209.165.201.1

    Correct Answer
    A. 10.0.0.17
    Explanation
    The most likely IP address assigned to the local computer, Host1, is 10.0.0.17. This is because NAT (Network Address Translation) and DHCP (Dynamic Host Configuration Protocol) are installed on the Linksys integrated router. NAT allows multiple devices on a local network to share a single public IP address, and DHCP is responsible for assigning IP addresses to devices on the network. Since the router is configured to handle DHCP, it is likely that it will assign an IP address from its local network range, which in this case is 10.0.0.0/24, to the local computer Host1.

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  • Current Version
  • Oct 09, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 17, 2012
    Quiz Created by
    Fitm

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