nokia 4A0-104 Exam Questions
Questions for the 4A0-104 were updated on : Nov 21 ,2025
Page 1 out of 20. Viewing questions 1-15 out of 288
Question 1
Which of the following about the Nokia 7750 SR sdp-ping is TRUE?
- A. It tests the IGP reachability of the far-end IP address of an SDP.
- B. It tests that the MTU settings of a service are correct.
- C. It tests in-band, uni-directional or round-trip connectivity of SDPs.
- D. It tests the reachability of hosts connected to an SDP.
Answer:
C
Question 2
Which of the following comparisons between E-pipes and VPLSes is FALSE?
- A. They both function as a Layer 2 switch from the service provider's perspective.
- B. They both support SAP encapsulations of null, dot1Q and Q-in-Q.
- C. They both use SAPs as the demarcation point between the customer and the provider.
- D. MAC addresses are learned by VPLSes, but not by E-pipes.
Answer:
A
Question 3
Click the exhibit.
The two PEs are providing 6VPE and IPv4 VPRNs. The core network is IPv4/MPLS. Which of the
following is the BGP family configuration for the MP-BPG on the PEs?
- A. family ipv4 ipv6
- B. family vpn-ipv4ipv6
- C. family vpn-ipv4 vpn-ipv6
- D. family ipv6 vpn-ipv6
Answer:
C
Question 4
Which of the following about VPRNs is TRUE?
- A. Customers must use the same routing protocol as the service provider.
- B. Customers belonging to the same VPRN service must use the same subnet.
- C. Service providers only need to perform configurations on the PEs to add additional VPRNs.
- D. For each VPRN, only one customer can be connected at each PE.
Answer:
C
Question 5
Which of the following about route distinguishes on the Nokia 7750 SR is TRUE?
- A. Route distinguishes are appended to IPv4 prefixes to form IPv6 prefixes.
- B. CE routers use a route distinguisher to indicate which VPRN they are associated to.
- C. A route distinguisher combined with an IPv4 prefix produces a VPN-IPv4 prefix.
- D. Route distinguishes are used to determine which routes a VPRN should import.
Answer:
C
Question 6
Click the exhibit.
The operator at PE1 wants to analyze the traffic between CE4 and PE2. On an Nokia 7750 SR, which
of the following is required as part of the configuration?
- A. Both PE1 and PE2 need a mirror source.
- B. PE2 needs a mirror source with the remote source specified.
- C. PE1 needs a mirror source with the remote source specified.
- D. Both PE1 and PE2 need a mirror destination.
- E. PE2 needs a mirror destination that specifies a SAP.
Answer:
D
Question 7
Which of the following about the Isp-ping command on the Nokia 7750 SR is FALSE?
- A. An echo request is sent based on the LSP's label stack.
- B. Echo reply packets may not take the same path as the LSP.
- C. The IP destination address is used to initiate echo requests,
- D. The test fails if the LSP is not operationally up.
Answer:
C
Question 8
A VPLS receives a frame with the single VLAN tag 35 on the Q-in-Q SAP 1/1/1:35.*. Which of the
following describes default Nokia 7750 SR behavior?
- A. The frame is dropped.
- B. The VLAN tag is removed, and the frame is transported over the network.
- C. The VLAN tag is kept, and the frame is transported over the network.
- D. The VLAN tag is kept, a VLAN of 0 is added, and the frame is transported over the network.
Answer:
B
Question 9
An SDP using GRE encapsulation is configured for an E-pipe service. The network port used by the
SDP has an MTU of 8000. What value does the SDP path MTU have by default on an Nokia 7750 SR?
- A. 7958
- B. 7978
- C. 8022
- D. 8042
Answer:
A
Question 10
On which object is ADSPEC enabled?
- A. SDP
- B. Network port
- C. LSP
- D. Service
- E. RSVP
Answer:
C
Question 11
A VPLS has a service MTU of 1600. To create an IES spoke termination to the VPLS, what ip-mtu value
must be used for the IES?
- A. 1586
- B. 1596
- C. 1600
- D. 1614
Answer:
A
Question 12
What Nokia 7750 SR OAM tool can be used to verify the end-to-end connectivity of a service?
- A. Sdp-ping
- B. Isp-ping
- C. Svc-ping
- D. Sdp-mtu
Answer:
C
Question 13
What happens by default on an Nokia 7750 SR when a VPLS accepts a tagged frame at the ingress
SAP 1/1/1:100?
- A. The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network.
- B. The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.
- C. The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network.
- D. The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.
Answer:
D
Question 14
A network consists of four PE routers. A customer requires a VPLS and has sites connected to each
PE. The VPLS is fully meshed using IP/MPLS. How many SDPs must be configured on each PE?
- A. 3
- B. 4
- C. 6
- D. 8
Answer:
A
Question 15
Which of the following about VPLS MAC learning is TRUE?
- A. Mesh SDPs assist MAC learning by flooding traffic to other mesh SDPs.
- B. A PE keeps a single FDB for all VPLSes it has.
- C. Frames received on a SAP that are broadcast, multicast or unknown are flooded.
- D. The FDB only stores the MAC addresses of remote sites.
Answer:
C