4A0-C01 Online Practice Questions and Answers

In IS-IS, which of the following statements regarding an L1/L2 router is false?

A. An L1/L2 router can have neighbors in different areas.

B. An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology.

C. An L1/L2 router advertises its L2 routes to its L1 neighbors.

D. An L1/L2 router sets the ATT bit in L1 LSPs to identify itself as an L1 router.

What is the primary purpose of classless interdomain routing (CIDR)?

A. To support classful routing protocols.

B. To allow IP routes to be defined using any number of bits for the network portion of the address.

C. To allow interdomain routing between an IGP and EGP such as OSPF and BGP.

D. To simplify the allocation of IP address space by defining a fixed size for the network portion of the address for each of the address classes.

What is the protocol number for OSPF in the IP header?

A. OSPF uses TCP, so the protocol number is 6.

B. OSPF uses UDP, so the protocol number is 17.

C. OSPF does not use IP.

D. OSPF has its own protocol number of 89.

Click on the exhibit.

Given the output, which of the following is the most accurate statement about the network?

A. There are five broadcast links and there are no point-to-point links.

B. There are five broadcast links and there are five point-to-point links.

C. There are five broadcast links. It's not possible to say how many point-to-point links there are.

D. It's not possible to say how many broadcast or point-to-point links there are.

Click the exhibit button.

A static route is created on router R1 using the command "static-route 0.0.0.0/0 next-hop 10.3.3.2". What command can be used to test the static route on an Alcatel-Lucent 7750 SR?

A. ping static 10.5.5.5

B. ping static 0.0.0.0/0

C. ping 10.5.5.5

D. ping 0.0.0.0

Which of the following statements are TRUE about configuring a SDP between an IES and a VPLS? (Choose 2)

A. The SDP must be a mesh

B. The SDP must be a spoke.

C. Once the SDP is configured on both PE routers, both the services will be operationally up without further configuration changes.

D. The Layer 2 MTUs must match between the IES and the VPLS

E. The Layer 2 MTU must be 14 bytes smaller on the VPLS than it is on the IES.

VPWS allows carriers to offer services such as point-to-point frame-relay, ATM, and Ethernet on a single platform without the need for multiple overlay networks.

A. TRUE

B. FALSE

A customer requests that their Layer 2 Ethernet service be configured to forward frames up to 1500 bytes. The service provider is using MPLS encapsulation (without RSVP-TE fast- reroute) on their IP/MPLS network. What is the minimum MTU setting for the network ports?

A. 1512

B. 1522

C. 1536

D. 1542

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Assuming that there are no stub or NSSA networks, which of the following statements regarding LSAs is true?

A. Only router R1 will generate Type 4 LSAs.

B. Only router R3 will generate Type 4 LSAs.

C. Routers R3 and R6 will generate Type 4 LSAs.

D. Routers R1, R3 and R6 will generate Type 4 LSAs.

RSVP session state for LSP 1 has timed out on router R3. Which of the following actions will router R3 initiate to clear the RSVP session?

A. Send a PATH Tear message toward router R6.

B. Send a PATH Tear message toward router R1.

C. Send a PATH Error message toward router R6.

D. Send a PATH Error message toward router R1.