最新的JNCIP認證 JN0-643考試題庫

問題1

Your enterprise network is providing layer 2 connectivity between remote-sites using Q-in-
Q tunneling. A customer wants to ensure their connection through your network is also participating in their spanning free topology. In this scenario, which solution must be used?

A. you must configure the Q in Q tunnel to use L2PT to tunnel STP packets

B. you must configure spanning tree to tunnel packets

C. you must configure spanning tree on the interfaces connected to the customers sites

D. you must configure the same isolation ID on both sides of the tunnel

正確答案: A

問題2

Referring to the exhibit, traffic that uses destination port 22 and the code point alias of
101010 is entering the router on interface ge 0/0/1. In this scenario which two statements are true?

A. The traffic is only evaluated by the multi-field classifier

B. The traffic is placed in the best effort forwarding class

C. The traffic is evaluated by both classifiers

D. The traffic is placed in the network control forwarding class

正確答案: B,C

問題3

-- Exhibit --
OSPF database, Area 0.0.0.0
Type ID Adv Rtr Seq Age Opt Cksum Len
Router *10.0.3.4 10.0.3.4 0x8000000d 30 0x22 0x8d11 132
bits 0x0, link count 9
id 10.1.1.0, data 255.255.255.0, Type Stub (3)
Topology count: 0, Default metriC. 1
id 10.0.4.8, data 255.255.255.252, Type Stub (3)
Topology count: 0, Default metriC. 1
id 10.0.2.10, data 10.0.2.10, Type Transit (2)
Topology count: 0, Default metriC. 1
id 172.16.0.6, data 172.16.0.5, Type Transit (2)
Topology count: 0, Default metriC. 1
id 10.0.3.4, data 255.255.255.255, Type Stub (3)
Topology count: 0, Default metriC. 0
id 10.0.9.7, data 10.0.2.18, Type PointToPoint (1)
Topology count: 0, Default metriC. 65
id 10.0.2.16, data 255.255.255.252, Type Stub (3)
Topology count: 0, Default metriC. 65
id 10.0.3.3, data 10.0.2.6, Type PointToPoint (1)
Topology count: 0, Default metriC. 2
id 10.0.2.4, data 255.255.255.252, Type Stub (3)
Topology count: 0, Default metriC. 2
Topology default (ID 0)
TypE. PointToPoint, Node ID. 10.0.3.3
MetriC. 2, Bidirectional
TypE. PointToPoint, Node ID. 10.0.9.7
MetriC. 65, Bidirectional
TypE. Transit, Node ID. 172.16.0.6
MetriC. 1, Bidirectional
TypE. Transit, Node ID. 10.0.2.10
MetriC. 1, Bidirectional
-- Exhibit --
Click the Exhibit button.
The exhibit shows the output of an OSPF router LSA.
Which interface ID represents the router's loopback address?

A. ID 10.0.2.4

B. ID 10.0.3.4

C. ID 10.0.3.3

D. ID 10.1.1.0

正確答案: B

問題4

-- Exhibit --
user@switch# run show spanning-tree statistics interface ge-0/0/0
STP interface statistics for VLAN 10
Interface BPDUs sent BPDUs received Next BPDU
transmission
ge-0/0/0.0 170 3 0
STP interface statistics for VLAN 20
Interface BPDUs sent BPDUs received Next BPDU
transmission
ge-0/0/0.0 171 3 0
-- Exhibit --
Click the Exhibit button.
Based on the exhibit, which spanning-tree protocol is running on ge-0/0/0?

A. PVST

B. RSTP

C. VSTP

D. MSTP

正確答案: C

問題5

Referring to the exhibit, All hosts have individually authenticated using 802.IX. Which supplicant mode is used on the switch?

A. MAC RADIUS

B. SINGLE SECURE

C. MULTIPLE

D. SINGLE

正確答案: C

問題6

You are attempting to configure BGP peering to a new service provider. The BGP peering state is stuck in the active state.
What are two reasons for this happening? (Choose two)

A. the local autonomous system number is not configure

B. the origin ID is not configure

C. The peer IP address is incorrect

D. The peer autonomous number is incorrect.

正確答案: C

問題7

You want to provide reachability to your data center by advertising its subnet throughout your upstream peer AS. However, you do not want this prefix advertised any further.
Which BGP community value would be used to meet this requirement?

A. no-export-subconfed

B. no-export

C. no-advertise

D. 65512 - 65535

正確答案: B

問題8

-- Exhibit -

-- Exhibit --
Click the Exhibit button.
You are asked to separate the human resources group from the finance group on the company network even though they share the same VLAN. You consider using PVLANs, and you delegate the task to a junior engineer who submits the configuration shown in the exhibit to accomplish this task. After review, you realize that the PVLAN implementation will not work correctly.
Referring to the exhibit, which three commands must be included to resolve the problem?
(Choose three.)

A. set vlans pvlan no-local-switching

B. set vlans hr-group primary-vlan pvlan

C. set vlans hr-group no-local-switching

D. set vlans finance-group no-local-switching

E. set vlans finance-group primary-vlan pvlan

正確答案: A,B,E

問題9

Which statement is true about default BGP route redistribution behavior?

A. EBGP-learned routes are advertised to other IBGP and EBGP peers.

B. EBGP-learned routes are redistributed into any IGPs.

C. IBGP-learned routes are advertised only to other IBGP peers.

D. EBGP-learned routes are advertised only to other EBGP peers.

正確答案: A

問題10

-- Exhibit --
Interface State Area DR ID BDR ID Nbrs
em2.0 DR 0.0.0.2 10.94.164.116 10.1.1.1 1
TypE. LAN, Address: 11.1.1.2, Mask: 255.255.255.252, MTU: 1500, Cost: 1
DR addr: 11.1.1.2, BDR addr: 11.1.1.1, Priority: 128
Adj count: 1
Hello: 10, DeaD. 40, ReXmit: 5, Stub
Auth typE. None
Protection typE. None
Topology default (ID 0) -> Cost: 1
-- Exhibit --
Click the Exhibit button.
Referring to the exhibit, which statement is true?

A. The OSPF cost of the interface is 128.

B. This router is the BDR.

C. The authentication type of the area is MD5.

D. This interface is part of a stub area.

正確答案: D

問題11

Your company recently implemented Layer 2 authentication and access control to secure users accessing the corporate network. You implemented 802.1X, MAC RADIUS, and a captive portal to support a variety of hosts on the network. Senior management is concerned that valid users might be authenticated incorrectly on the network and they ask you questions about how these different access technologies are used simultaneously.
Which three statements are correct? (Choose three.)

A. Captive portal is a supported fallback option for 802.1X.

B. MAC addresses that are part of a MAC address whitelist or a static MAC list are authenticated before any other authentication protocol is invoked.

C. If the authentication server fails to respond to access requests and both a server-fail and guest VLAN are configured correctly, the server-fail VLAN takes precedence over the guest
VLAN.

D. If a port is configured with 802.1X and the host does not respond to EAP requests, no other authentication protocol can authenticate the host.

E. Captive portal can only be configured on Layer 3 interfaces.

正確答案: A,B,C

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