Practice Test Geeks(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test
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Network Fundamentals & IP Addressing Flashcards

7 cards from real ICND1 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Network Fundamentals & IP Addressing flashcards as text

  1. How many subnets are created when you borrow 3 bits from the host portion of a Class C address?

    Answer: 8

    Borrowing 3 bits yields 2^3 = 8 subnets (using the all-zeroes and all-ones subnets per modern practice).

  2. What type of IPv4 address is 169.254.10.5?

    Answer: APIPA / link-local

    The 169.254.0.0/16 range is APIPA (Automatic Private IP Addressing), assigned when DHCP is unavailable.

  3. Which device operates at Layer 1 and simply regenerates the electrical signal?

    Answer: Hub

    A hub is a Layer 1 device that repeats electrical signals out all ports without any intelligence.

  4. What is the decimal value of the binary number 11001010?

    Answer: 202

    128+64+8+2 = 202 (bits 7,6,3,1 are set).

  5. Which class of IP address uses the default subnet mask 255.255.0.0?

    Answer: Class B

    Class B addresses (128.0.0.0–191.255.255.255) have a default mask of 255.255.0.0 (/16).

  6. A packet destined for 192.168.1.255 on a /24 network is sent as what type of transmission?

    Answer: Directed broadcast

    192.168.1.255 is the directed (subnet) broadcast for 192.168.1.0/24, sent to all hosts on that subnet.

  7. Which layer of the TCP/IP model corresponds to OSI Layers 5, 6, and 7 combined?

    Answer: Application

    The TCP/IP Application layer combines OSI Session (5), Presentation (6), and Application (7) layers.