Module 2 Review Exam
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Questions and Answers

Which of the following is NOT a characteristic of public IP addresses?

  • Routable on the public internet
  • Globally unique
  • Assigned by the Internet Assigned Numbers Authority (IANA)
  • Used for communication within local networks (correct)

    • What is the maximum number of hosts that can be placed on the 192.168.10.0/24 subnet?

  • 253
  • 256
  • 255
  • 254 (correct)

    • What is the primary function of Network Address Translation (NAT)?

  • Converting private IP addresses to public IP addresses
  • Assigning unique IP addresses to devices on a local network
  • Both A and B (correct)
  • Allowing devices on a local network to communicate with the public internet

    • What does the '/24' notation in a subnet mask, such as 192.168.10.0/24, indicate?

    <p>The number of bits used for the network ID (D)</p> Signup and view all the answers

    Which of the following is responsible for the global allocation of IP address space?

    <p>Internet Assigned Numbers Authority (IANA) (A)</p> Signup and view all the answers

    What is the purpose of private IP addresses?

    <p>To provide unique addresses for devices within local networks (D)</p> Signup and view all the answers

    What is the primary function of public IP addresses?

    <p>They enable routing and data delivery between networks. (D)</p> Signup and view all the answers

    How do private IP addresses conserve the global IP address space?

    <p>By allowing organizations to use the same internal address ranges without conflicts. (A)</p> Signup and view all the answers

    What is Network Address Translation (NAT), and why is it important?

    <p>It is a method used to convert private IP addresses into public IP addresses for external communication. (A)</p> Signup and view all the answers

    Which of the following is an advantage of using private IP addresses?

    <p>Conservation of the global IP address space. (D)</p> Signup and view all the answers

    Why are public IP addresses considered essential for public-facing services and devices?

    <p>They enable direct routability and communication with other devices and services on the internet. (C)</p> Signup and view all the answers

    What happens to private IP addresses when devices on a private network need to communicate with the internet?

    <p>They are converted to public IP addresses using NAT. (A)</p> Signup and view all the answers

    Which decimal number does the binary value "0010" represent?

    <p>2 (C)</p> Signup and view all the answers

    What is the main benefit of using NAT?

    <p>It conserves the global IP address space and adds a layer of security to private networks. (B)</p> Signup and view all the answers

    Why is it important to ensure that a 4-bit binary number has exactly four digits, including leading zeros?

    <p>To prevent ambiguity between different binary values. (A)</p> Signup and view all the answers

    Which of the following is NOT a valid hexadecimal digit?

    <p>G (D)</p> Signup and view all the answers

    What is the decimal equivalent of the binary number 10101111?

    <p>175 (B)</p> Signup and view all the answers

    Which of the following is a valid MAC address? (Select all that apply)

    <p>00:11:22:33:44:55 (B), AA:BB:CC:DD:EE:FF (C), 00:1A:2B:3C:4D:5E (D)</p> Signup and view all the answers

    What is the primary purpose of physical network addressing?

    <p>To provide a unique identifier for each device on a network. (B)</p> Signup and view all the answers

    What is the purpose of subnetting in this context?

    <p>To divide a network into smaller, more manageable subnetworks. (B)</p> Signup and view all the answers

    How many network bits are required to create at least 10 subnets?

    <p>4 (B)</p> Signup and view all the answers

    What is the new subnet mask after subnetting the Class B 172.16.0.0/16 network into 10 subnets?

    <p>/20 (B)</p> Signup and view all the answers

    What is the primary advantage of Classless Inter-Domain Routing (CIDR) over the older classful IP address assignment method?

    <p>CIDR simplifies routing and reduces the size of routing tables. (C)</p> Signup and view all the answers

    What does the notation 192.168.10.0/24 mean in CIDR?

    <p>The first 24 bits identify the network ID and the remaining 8 bits identify the host IDs. (C)</p> Signup and view all the answers

    How does Variable Length Subnet Mask (VLSM) differ from traditional subnetting?

    <p>VLSM allows for subnets of different sizes, while traditional subnetting requires all subnets to be the same size. (B)</p> Signup and view all the answers

    What is the main limitation of using powers of 2 when calculating the number of subnets?

    <p>It can lead to wasted IP address space. (C)</p> Signup and view all the answers

    What is the minimum length of a network prefix in an IPv6 address?

    <p>0 (C)</p> Signup and view all the answers

    What is the maximum number of bits that can be used for the interface ID in an IPv6 address?

    <p>128 (A)</p> Signup and view all the answers

    Which of the following is NOT a type of IPv6 address?

    <p>Broadcast (B)</p> Signup and view all the answers

    Which type of IPv6 address is used for communication within a single network segment?

    <p>Link-Local (C)</p> Signup and view all the answers

    Which of the following is a characteristic of global unicast IPv6 addresses?

    <p>They are globally unique and routable on the IPv6 internet. (B)</p> Signup and view all the answers

    What is the length of the global routing prefix in a global unicast IPv6 address?

    <p>48 bits (B)</p> Signup and view all the answers

    What is the purpose of multicast addresses in IPv6?

    <p>To send traffic to a specific group of nodes (A)</p> Signup and view all the answers

    Which of the following is NOT a function of anycast addresses in IPv6?

    <p>To send traffic to all nodes on a network (A)</p> Signup and view all the answers

    What is the main disadvantage of a full mesh topology in large networks?

    <p>High cost and complexity due to the large number of connections. (A)</p> Signup and view all the answers

    Which network topology is commonly used in wireless mesh networks?

    <p>Mesh topology (D)</p> Signup and view all the answers

    What is the advantage of using a hybrid topology in a network?

    <p>Combines the strengths of different topologies for optimal performance. (B)</p> Signup and view all the answers

    Which of the following is NOT a factor that influences traffic flow in a network?

    <p>Number of users online (D)</p> Signup and view all the answers

    Which type of traffic flow involves sending data to all devices on a network?

    <p>Broadcast (B)</p> Signup and view all the answers

    What is the main benefit of a partial mesh topology compared to a full mesh topology?

    <p>Lower cost and complexity to implement. (D)</p> Signup and view all the answers

    Study Notes

    Transmission Media and Transceivers

    • Transmission media are the physical pathways that facilitate data transmission between network devices
    • Guided media (wired): uses physical cables (twisted pair, coaxial, fiber optic) to guide signals along a specific path
    • Unguided media (wireless): transmits signals through air or space without physical conductors (radio waves, microwaves, infrared)
    • Wireless transmission media allows data transmission without physical cables, using electromagnetic waves for communication.
    • 802.11 standards are crucial for Wi-Fi networks
    • Cellular networks enable mobile communication and internet access, and satellite communication systems provide connectivity over vast distances, including remote and rural areas.

    802.11 Standards

    • 802.11 standards set the guidelines for wireless local area network (WLAN) communication
    • The 802.11 family covers frequency bands, data rates, modulation techniques, and security protocols, ensuring interoperability between devices
    • 2.4 GHz Wi-Fi band is popular due to its longer range and penetration through obstacles, but prone to interference from other devices
    • 5 GHz Wi-Fi band offers faster data rates and better performance, but has a shorter range compared to 2.4 GHz
    • 6 GHz Wi-Fi band (introduced with Wi-Fi 6E) provides even higher speeds and reduced congestion, ideal for high-bandwidth applications
    • Each version of 802.11 standard improves speed, range, reliability, and security

    Wireless Frequency bands

    • Wireless frequency refers to the rate at which electromagnetic waves oscillate during transmission
    • Measured in Hertz (Hz)
    • Different frequencies are used for various technologies, balancing range, data speed and interference

    Wireless Frequency Bands

    • Lower frequencies typically offer longer ranges and better penetration through obstacles.
    • Higher frequencies can carry more data but over shorter distances

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    Description

    Test your knowledge on the fundamentals of networking with this quiz. Questions cover topics such as IP addresses, subnet masks, and Network Address Translation (NAT). Perfect for anyone looking to reinforce their understanding of networking concepts.

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