Nokia 4A0-100

Nokia 4A0-100 practice questions, page 12 of 13, with answer review and explanations.

Question 56

Which of the following is NOT an example of a Layer 2 protocol?

  1. POS
  2. IP
  3. ATM
  4. Frame Relay
  5. Ethernet

Question 57

Why is the address field in a PPP header always set to "11111111"?

  1. PPP supports multipoint access networks with many stations. The all 1's acts as a broadcast.
  2. PPP supports multipoint access networks with many stations. The all 1's acts as a multicast.
  3. PPP supports point-to-point networks only. The address field is fixed.
  4. PPP supports point-to-point networks only. The address field can change dynamically since every station is assigned a PPP address.

Question 58

Which ATM adaptation layer is commonly used for transporting IP datagrams or non-real time data?

  1. AAL0
  2. AAL1
  3. AAL2
  4. AAL3/4
  5. AAL5

Question 59

Which of the following is a characteristic of ATM?

  1. Application data is transported in 53-byte cells.
  2. ATM circuits are identified by a VPI/VCI value.
  3. Provides enhanced QoS support with 5 classes of service.
  4. Ideal for multiple services on the same physical line.
  5. All of the above.
  6. None of the above

Question 60

What is the basic unit of framing in SONET and the bit rate for its transmission?

  1. STS-1 with a bit rate of 1.544 Mbit/s
  2. STS-1 with a bit rate of 2.048 Mbit/s
  3. STS-1 with a bit rate of 51.84 Mbit/s
  4. STS-1 with a bit rate of 155.52 Mbit/s