Nokia 4A0-100 Online Practice Questions and Exam Preparation

Nokia 4A0-100 Online Questions & Answers

• Question 121:

  When forwarding a packet, which field in the following table determines the egress interface?

  A. Preference
  B. Metric
  C. Next-hop
  D. Cost
  C. Next-hop

• Question 122:

  Which of the following is an important advantage of protocol layering? (Choose two)

  A. Controls distribution of IP addresses.
  B. Simplifies protocol functionality.
  C. Isolates changes in lower layers from upper layers.
  D. Increases protocol operational efficiencies.
  E. Layering adds to the fragmentation of the data
  C. Isolates changes in lower layers from upper layers.
  D. Increases protocol operational efficiencies.

• Question 123:

  With a subnet mask of 255.255.255.224, which of the IP addresses below are valid host addresses? (Choose all that apply)

  A. 17.23.119.63
  B. 87.99.12.159
  C. 95.11.22.93
  D. 192.11.25.87
  C. 95.11.22.93
  D. 192.11.25.87

• Question 124:

  What does a device do when it receives an ICMP Echo request message that is destined for itself, it then:

  A. Estimates the round trip-time.
  B. Generates an echo reply message.
  C. Calculates the data loss statistics.
  D. Verifies the data field of the message.
  B. Generates an echo reply message.

• Question 125:

  Using Q-in-Q Virtual Local Area Network (VLAN) stacking, how does a carrier differentiate one customers traffic from that of another?

  A. The provider edge (PE) switch adds an additional field called a PE tag to the customers Layer 2 data.
  B. The PE switch replaces the customers VLAN tag with a carrier-assigned tag.
  C. The PE switch adds a second VLAN tag to identify the customers traffic on the carriers network.
  D. The PE switch assigns a customer-specific priority label to the customers traffic.
  C. The PE switch adds a second VLAN tag to identify the customers traffic on the carriers network.

• Question 126:

  Network address: 200.12.30.0 Network mask: 255.255.255.0

  Use the information above. You need to create 12 subnetworks supporting 10 host addresses each. Which extended prefix will meet this requirement?

  A. /12
  B. /24
  C. /26
  D. /28
  E. /30
  D. /28

• Question 127:

  Which of the following statements about ARP request and ARP response messages is TRUE?

  A. Both ARP request and response messages are unicast messages.
  B. Both ARP request and response messages are broadcast messages.
  C. An ARP request is a broadcast message, while an ARP response is a unicast message.
  D. An ARP request is a unicast message, while an ARP response is a broadcast message.
  C. An ARP request is a broadcast message, while an ARP response is a unicast message.

• Question 128:

  In which of the following types of network would STP be used?

  A. An MPLS network with multiple LSPs to the same LER.
  B. An Ethernet network with redundant paths.
  C. An OSPF network with multiple equal-cost paths.
  D. An eBGP network with multiple ASes.
  B. An Ethernet network with redundant paths.

• Question 129:

  You are configuring your Nokia 7750SR Service Router from the Command Line Interface (CLI), and after entering a lengthy command, wish to return directly to the ROOT context. Which control command allows you to do this quickly?

  A. Ctrl-z
  B. Ctrl-c
  C. Esc
  D. Shift-Page Down
  A. Ctrl-z

• Question 130:

  Which of the following is NOT an advantage pf TCP/IP layering?

  A. It provides a standardized method of communication.
  B. It simplifies complex procedures.
  C. It reduces protocol overhead.
  D. It isolates layers and defines how they should interact.
  C. It reduces protocol overhead.