Nokia Nokia Certifications 4A0-100 Questions & Answers

• Question 101:

  Router R5 receives four route updates for the same prefix 10.10.10.1/32. Which of the four routes will be installed in R5's routing table?

  

  A. Route learned from router R1.

  B. Route learned from router R2.

  C. Router learned from router R3.

  D. Route learned from router R4.

  Correct Answer: D

• Question 102:

  Which of the following egress interfaces is used to forward a packet with destination IP address 140.10.0.110?

  

  A. System interface

  B. Interface "toC1"

  C. Interface "toP1"

  D. Interface "toP2"

  Correct Answer: C

• Question 103:

  Router R3 receives an LSA with the sequence number 111 from router R4 and then receives another copy of the LSA with a sequence number 112 from router R2. What does router R3 do with the LSA from R2?

  

  A. R3 discards the LSA received from R2 and sends a copy of the LSA from its link state base to R2.

  B. R3 installs the LSA received from R2 in its link state database and floods a copy to its neighbors.

  C. R3 discards the LSA received from R2 and sends an ACK to R2.

  D. R3 installs the LSA received from R2 in its link state database, sends an ACK to R2, and floods a copy to its neighbors.

  Correct Answer: C

• Question 104:

  Which of the following about the displayed IP filter is TRUE?

  

  A. TCP (protocol 6) packets with source IP address 1.2.3.0/24 and source port number between 666 and 999 are forwarded.

  B. TCP (protocol 6) packets with source IP address 1.2.3.0/24 and source port number between 666 and 999 are dropped.

  C. TCP (protocol 6) packets with source IP address 1.2.3.0/24 or source port number between 666 and 999 are forwarded.

  D. TCP (protocol 6) packets with destination IP address 1.2.3.0/24 and source port number between 666 and 999 are forwarded.

  Correct Answer: B

• Question 105:

  A network with address 208.40.224.0/24 is divided into /28 subnets. What is the host address range of the fourth subnetwork?

  A. 208.40.224.17 ?208.40.224.30

  B. 208.40.224.33 ?208.40.224.46

  C. 208.40.224.49 ?208.40.224.62

  D. 208.40.224.65 ?208.40.224.78

  Correct Answer: C

• Question 106:

  Network 201.148.104.0/21 is subnetted using a /23 mask. How many subnets and host addresses per subnet will be obtained with this mask?

  A. 2 subnets, 1022 hosts

  B. 4 subnets, 510 hosts

  C. 2 subnets, 2048 hosts

  D. 4 subnets, 512 hosts

  Correct Answer: A

• Question 107:

  What is the most specific aggregate prefix for the following 4 subnets?

  100.1.1.4/30 100.1.1.8/30

  100.1.1.12/30 100.1.1.16/30

  A. 100.1.1.0/25

  B. 100.1.1.0/26

  C. 100.1.1.0/27

  D. 100.1.1.0/28

  Correct Answer: C

• Question 108:

  Which of the following is a characteristic of a subnet created with a prefix length of /32?

  A. The subnet has only one address reserved for a loopback interface or the system interface.

  B. The subnet has a broadcast address.

  C. The subnet is configured for a point-to point link.

  D. The subnet is reserved for a multicast address groups.

  Correct Answer: A

• Question 109:

  Which of the following statements about IP addressing is TRUE?

  A. IP addresses are assigned by IEEE to vendors.

  B. Classless IP addresses provide hierarchy based on a variable length subnet mask.

  C. Classless IP addresses provide hierarchy based on fixed subnet masks of /24, /16, and /8.

  D. IP addresses provide hierarchy based on the country code and regional identifier.

  Correct Answer: B

• Question 110:

  Which of the following involves grouping a number of routes with common prefixes into a single route advertisement?

  A. Hierarchical IP Addressing

  B. IP Address Subnetting

  C. Variable Length Subnet Masking

  D. IP Address Summarization

  Correct Answer: D