JN0-643 Online Practice Questions and Answers

-- Exhibit

-- Exhibit -Click the Exhibit button.

Which statement is true about the IPv6 network shown in the exhibit?

A. OSPFv2 must be configured to route IPv4 prefixes.

B. Areas 1 and 2 cannot be a stub or NSSA.

C. OSPFv3 can use MD5 authentication.

D. OSPFv3 can route IPv4 prefixes.

Which statement is true regarding OSPF multi-area adjacencies?

A. A type 3 (stub) link is advertised for a multi-area adjacency.

B. Configuring a multi-area adjacency allows the corresponding link to be considered an interarea link, so it will be less preferred over an intra-area link.

C. One logical interface will be a primary link, and the other configured as a secondary link; the secondary link will be established as an unnumbered point-to-point interface.

D. A DR and a BDR will be elected over the secondary interface, because it is not point-to-point.

-- Exhibit -user@router> show ospf database network extensive

OSPF link state database, area 0.0.0.1

Type ID Adv Rtr Seq Age Opt Cksum Len Network 10.222.1.1 192.168.20.1 0x80000002 813 0x2 0x 32 mask 255.255.255.0 attached router 192.168.20.1 attached router 192.168.40.1 Aging timer 00:46:27 Installed 00:13:32 ago, expires in 00:46:27, sent 1w5d 01:07:09 ago

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Click the Exhibit button.

Referring to the exhibit, which statement is true regarding the OSPF network LSA?

A. The ID field value shows the router ID of the advertising router.

B. The ID field is the local interface IP address from which the LSA will be advertised.

C. The options field indicates this is a Type 2 LSA.

D. The output shows that 192.168.20.1 is the designated router.

-- Exhibit -user@router# run show route receive-protocol bgp 192.168.4.101 detail

inet.0: 18 destinations, 20 routes (18 active, 0 holddown, 0 hidden)

*

10.16.1.0/24 (1 entry, 1 announced) Accepted Nexthop: 192.168.4.101 LocalpreF. 100 AS path: 123 111 I

*

10.16.2.0/24 (1 entry, 1 announced) Accepted Nexthop: 192.168.4.101 LocalpreF. 100 AS path: 123 222 312 I

*

10.16.3.0/24 (1 entry, 1 announced) Accepted Nexthop: 192.168.4.101 LocalpreF. 100 AS path: 123 231 222 I

*

10.16.4.0/24 (1 entry, 1 announced) Accepted Nexthop: 192.168.4.101 LocalpreF. 100 AS path: 123 333 111 I -- Exhibit -

Click the Exhibit button.

Referring to the exhibit, which AS path regular expression will match only the 10.16.1.0/24 and 10.16.2.0/24 routes?

A. .* (222|111) .*

B. .+ (222|111) .*

C. .(222|111) .*

D. . (.222|.111) .*

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-advertise

B. no-export

C. no-export-subconfed

D. 65512 - 65535

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-- Exhibit -Click the Exhibit button.

You have implemented a firewall-based VLAN filter to map traffic from subnet 192.168.40.0/24 to a VLAN named vlan_40. However, you have not been successful in getting the traffic mapped correctly. In addition, all traffic must be passed to

the Layer 2 network.

Referring to the exhibit, which three commands are required to accomplish this behavior? (Choose three.)

A. set interfaces ge-0/0/19.0 family ethernet-switching filter output assign_vlan

B. set interfaces ge-0/0/19.0 family ethernet-switching filter input assign_vlan

C. set vlans vlan_40 interface ge-0/0/19.0 mapping policy

D. set vlans vlan_30 interface ge-0/0/19.0 mapping policy

E. set interfaces ge-0/0/20 unit 0 family ethernet-switching port-mode trunk vlan members all

You are configuring CoS classifiers and want to use both BA and MF classification. After applying the configuration, you realize that the classifiers have a conflict.

Which statement is true?

A. BA classification overrides MF classification.

B. MF classification overrides BA classification.

C. Neither classification method is applied.

D. Both classifications are applied randomly.

-- Exhibit

-- Exhibit -Click the Exhibit button.

In the exhibit, Host2 is the only host currently joining group 231.1.1.1, but S1 is still flooding the traffic to all hosts on VLAN 100.

What feature can be configured on S1 to limit the multicast flooding of traffic to only interested hosts on VLAN 100?

A. Multicast scoping

B. IGMP snooping

C. Multicast VLAN registration

D. IGMP immediate leave

-- Exhibit

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In the topology shown in the exhibit, which two BGP attributes can AS1 manipulate to influence the path that AS4 takes to reach prefixes originated by AS1? (Choose two.)

A. Local Preference

B. AS Path

C. Origin

D. MED

When traffic is classified on an EX Series switch, which statement is true?

A. With the default classifier rules applied, voice and video traffic receive their own queues to avoid congestion

B. With the default classifier, rules applied all traffic that enters an access port is classified as best effort

C. With the default classifier rules applied, voice traffic is classified as expedited forwarding on trunk ports

D. If no classifier rules are applied, class of service bits are automatically rewritten on egress to match the class of service assigned on ingress