QUESTION 61
Which of the following fields in the data header cannot be used for behavior aggregate (BA) classification?

A. Protocol
B. 802.1p
C. DSCP
D. EXP

Correct Answer: A
QUESTION 62

What can be determined from the following figure?

A. R1 does not have IS-IS IPv6 routes.
B. IS-IS IPv6 must have been enabled on GigabitEthernet0/0/1 of R1.
C. R1 has six IS-IS IPv6 routes.
D. R1 is not a Level-1 device.

Correct Answer: BCD
QUESTION 63
In the firewall hot standby scenario, which of the following status information can be backed up between the active and standby firewalls?

A. Server mapping table
B. Dynamic MAC address table
C. AAA user table (excluding the default user admin)
D. Session table

Correct Answer: ABCD
QUESTION 64
As shown in the figure, PE1 and PE2 exchange private network route information with their respective CEs through OSPF, and the same domain ID is configured on PE1 and PE2. Which of the following LSA types may be transmitted to CE2 when PE2 imports BGP routes to the OSPF process?

A. Type 7 LSA
B. Type 3 LSA
C. Type 1 LSA
D. Type 5 LSA

Correct Answer: ABD
QUESTION 65
What can be determined from the following figure?

A. R4 is only a Level-2 device.
B. R4 is only a Level-1 device.
C. The device whose system ID is ee8c.a0c2.baf2 is a Level-1 device.
D. The device whose system ID is ee8c.a0c2.baf2 is a Level-1-2 device.

Correct Answer: BD

QUESTION 66
Which of the following link types may appear in OSPF Router-LSAs?

A. StubNet
B. TransNet
C. Vlink
D. P-2-P

Correct Answer: ABCD
QUESTION 67
Which of the following types of routes is used by EVPN to implement fast convergence and split horizon?

A. Ethernet A-D route
B. Ethernet segment route
C. Inclusive multicast route
D. MAC/IP advertisement route

Correct Answer: C
QUESTION 68
As shown in the figure, Site1 and Site2 need to communicate through a carrier’s BGP/MPLS IP VPN. A public network tunnel has been established between PE1 and PE2 (label information is shown in the figure). PE1 has advertised the 192.168.1.0/24 route of Site1 to PE2 through MP-IBGP, and route learning is normal. What is the top label in a data packet transmitted on the link P -> PE1 if the packet is sent by Site2 to 192.168.1.0/24 of Site2?

A. 3
B. 6661
C. 6662
D. 8888

Correct Answer: D
QUESTION 69
Referring to the following IPv6 routing information calculated by R4 using IS-IS, which of the following statements is correct?

A. R4 has no IS-IS routing entry.
B. R4 has two unequal-cost IS-IS default routes.
C. R4 has two equal-cost IS-IS default routes.
D. R4 has one IS-IS default route.

Correct Answer: C
QUESTION 70
As shown in the following figure, by using a route-policy changes the Local-Pref value of the route sent from R1 to R2, the network administrator can control the traffic through which path leaves As 100.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 71
OSPF is a mature protocol and is unlikely to have route computation errors in a regular networking environment under correct configurations. Which of the following statements are correct about the possible causes preventing an OSPF neighbor relationship from entering Full state?

A. The OSPF network types on both ends of the link are inconsistent.
B. The router IDs of neighbors are the same.
C. The OSPF MTU values of interfaces on both ends of the link are different.
D. A link works abnormally.

Correct Answer: ABCD
QUESTION 72
Which of the following statements regarding MPLS label encapsulation format are correct?

A. The total length of one layer of MPLS label is 4 bytes.
B. The S field in an MPLS label has 1 bit and 1 is used to identify whether the label is the bottom-of-stack label. If the value is 1, the label is a penultimate-layer label.
C. For Ethernet and PPP packets, a label stack is located between 2 the Layer 2 packet header and data. If a VLAN tag is available, the label stack is placed between Ethernet header and the VLAN tag.
D. The TTL field in an MPLS label has the similar meaning as that in an IP packet, and can prevent loops.

Correct Answer: AD
QUESTION 73
What can be determined from the following figure?

A. R1 has two IS-IS neighbors.
B. R1’S GE0/0/1 has Level-2 capabilities
C. RI’s GE0/0/0 has Level-2 capabilities
D. There must be a Level-2 LSDB on R1.

Correct Answer: ABCD
QUESTION 74
During the migration test, which of the following indicates that the test is completed?

A. Tested upper-layer application services are running properly on the network.
B. Command outputs are correct.
C. Tested network services are running properly.
D. The network is running properly.

Correct Answer: B
QUESTION 75
According to the following information displayed on a router, which of the following are the causes of the failure in establishing an OSPF adjacency relationship?

A. The area IDs are inconsistent.
B. Hello packets are sent at different intervals.
C. The area types are inconsistent.
D. The IP address masks of the interfaces are inconsistent.

Correct Answer: D
QUESTION 76
Which of the following commands can be used to display information about BGP VPNv4 routes and BGP private network routes on a PE?

A. display bgp routing-table ipv4-family vpnv4
B. display bgp routing-table address-family vpnv4
C. display vpnv4 bgp routing-table
D. display bgp vpnv4 routing-table

Correct Answer: D
QUESTION 77
On the campus network shown, IPv6 is deployed for service tests. Four routers are deployed on the network, and OSPFv3 is used for IPv6 network connectivity. An engineer checks the LSDB of R2 and obtains a Link-LSA. Which of the following statements about the LSA are correct?

A. The link-local address of R2’s GE0/0/0 is FE80::2E0:FCFF:FECD:4F79.
B. This LSA is generated by R2.
C. This LSA indicates that R2 does not support external routes but can participate in IPv6 route calculation.
D. The IPv6 address prefix of R2’S GE0/0/0 is 2001:DB8:2345:23::/64.

Correct Answer: ABD
QUESTION 78
Which of the following statements are correct about IS-IS (IPv6)?

A. To support the processing and calculation of IPv6 routes, TLV (type 232) and TLV (type 236) are added for IS-IS.
B. IS-IS works at the data link layer and can support IPv6 through TLV addition.
C. To support the processing and calculation of IPv6 routes, a new NLPID is added for IS-IS TLV (type 129).
D. By default, IS-IS multi-topology is enabled.

Correct Answer: ABC
QUESTION 79
The display ip interface GE0/0/0 command can be used to view statistics about the ping packets received by GE 0/0/0.

A. TRUE
B. FALSE

Correct Answer: A

QUESTION 80
After completing a project survey, which of the following customer network requirements do you need to obtain to determine a migration solution?

A. Transport capability of new services
B. Bandwidth usage
C. Packet loss rate
D. QoS

Correct Answer: ABCD