Last Updated on September 20, 2021 by Admin 2

312-38 : Certified Network Defender : Part 11

  1. What is the range for registered ports?

    • 1024 through 49151
    • 0 through 1023
    • Above 65535
    • 49152 through 65535
  2. How many layers are present in the TCP/IP model?

    • 10
    • 5
    • 4
    • 7
  3. In which of the following transmission modes is communication uni-directional?

    • Root mode
    • Full-duplex mode
    • Half-duplex mode
    • Simplex mode
  4. CSMA/CD is specified in which of the following IEEE standards?

    • 802.3
    • 802.2
    • 802.1
    • 802.15
  5. What is the response of an Xmas scan if a port is either open or filtered?

    • RST
    • No response
    • FIN
    • PUSH
  6. Which of the following fields in the IPv6 header replaces the TTL field in the IPv4 header?

    • Next header
    • Traffic class
    • Hop limit
    • Version
  7. Which of the following IEEE standards defines a physical bus topology?

    • 802.4
    • 802.5
    • 802.6
    • 802.3
  8. Which of the following protocols is described as a connection-oriented and reliable delivery transport layer protocol?

    • UDP
    • IP
    • SSL
    • TCP
  9. Which of the following protocols is used for inter-domain multicast routing?

    • BGP
    • RPC
    • VoIP
    • RADIUS
  10. How many layers are present in the OSI layer model?

    • 5
    • 4
    • 7
    • 9
  11. Which of the following is an electronic device that helps in forwarding data packets along networks?

    • Router
    • Hub
    • Repeater
    • Gateway
  12. Which of the following represents a network that connects two or more LANs in the same geographical area?

    • PAN
    • WAN
    • MAN
    • SAN
  13. The IP addresses reserved for experimental purposes belong to which of the following classes?

    • Class E
    • Class C
    • Class A
    • Class D
  14. Which of the following layers is closest to the end user?

    • Application layer
    • Physical layer
    • Session layer
    • Presentation layer
  15. Which of the following IEEE standards defines the token passing ring topology?

    • 802.4
    • 802.5
    • 802.3
    • 802.7
  16. Which of the following layers of the OSI model provides physical addressing?

    • Application layer
    • Network layer
    • Physical layer
    • Data link layer
  17. Which of the following protocols sends a jam signal when a collision is detected?

    • ALOHA
    • CSMA/CA
    • CSMA/CD
    • CSMA
  18. Which of the following key features limits the rate a sender transfers data to guarantee reliable delivery?

    • Ordered data transfer
    • Error-free data transfer
    • Flow control
    • Congestion control
  19. Which of the following OSI layers is sometimes called the syntax layer?

    • Presentation layer
    • Application layer
    • Physical layer
    • Data link layer
  20. In which of the following transmission modes is data sent and received alternatively?

    • Simplex mode
    • Bridge mode
    • Half-duplex mode
    • Full-duplex mode