JN0-643 Exam Questions

Host 1, Host 2, and Host 3 are connected to Switch A on interface ge-0/0/2. Host 1 and Host 2 do not support 802.1X. They can authenticate and connect to the Internet. Host 3 was a...

The CLI output shown in the exhibit was taken from the RP in a PIM-SM network. Which statement explains the output shown in the exhibit? user@RP> show pim join extensive InstancE....

The exhibit shows the output of an OSPF router LSA. Which interface ID represents the router's loopback address? OSPF database, Area 0.0.0.0 Type ID Adv Rtr Seq Age Opt Cksum Len R...

In the exhibit, you see a configuration for CoS. Incoming traffic with specific IP precedence bits should be mapped to a forwarding class named best-effort. A classifier named norm...

You are configuring an EBGP peer in a transit environment. You must advertise routes learned from other EBGP peers in your AS. Any routes originated from within your AS should have...

As shown in the exhibit, a router is receiving three external LSAs for the prefix 71.23.48.0. [edit] user@router# run show ospf database external lsa-id 71.23.48.0 extensive OSPF A...

In the exhibit, the 10.100/16 prefix is introduced at autonomous system 1 (AS1) and propagated through to AS3. Router A in AS3 receives two different paths to these prefixes, one t...

All four routers in the exhibit are in the same broadcast domain. The routers were powered on at the same time. [edit] user@R1# show routing-options router-id router-id 1.1.1.1; [e...

You recently deployed an SRX Series Gateway in your network. It uses the default class of service configuration. user@router> show interfaces ge-0/0/0 extensive | find "Queue count...

Looking at the traceoptions output, what is the current keepalive timer set for in BGP? Mar 16 19:12:58.291474 BGP RECV 172.14.10.2+51230 -> 172.14.10.1+179 Mar 16 19:12:58.291624...

As shown in the exhibit, a legacy IP phone is attached to Switch-1. The phone does not support LLDP-MED, but does allow configuration using DHCP. Existing network CoS policies dict...

Which statement about the non-ABR router in Area 2 in the exhibit is true?

Referring to the exhibit, you want to configure Switch-1 to allow a user on interface ge- 0/0/10 to accommodate both voice and data traffic. Your phones and your switches are LLDP-...

Site A is sending voice traffic marked with DSCP code EF. SRX A has the default CoS classifier. Into which forwarding class is SRX A classifying traffic?

In the exhibit, the routers in the network have a default PIM sparse mode configuration. R2 shows that R1 is the RPF next hop for the source, and R3 is the RPF next hop for the RP....

In the exhibit, the provider bridges are using Q-in-Q tunneling to tunnel VLAN 100 traffic over VLAN 200. What is the correct VLAN configuration for Q-in-Q tunneling on Provider Br...

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.)

Traffic flows through your network, as shown in the exhibit. You have configured a rewrite rule on R1 to mark HTTP traffic with a specific DSCP value. What must you do to ensure th...

In the exhibit, Switch A is an EX4200. VLAN10 is receiving tagged as well as untagged traffic from different ports. The administrator wants to mirror all tagged and untagged traffi...

As shown in the exhibit, the 10.10/16 prefix is redistributed into OSPF through R2 and R5. R2 is advertising the prefix with a Type 1 metric of 100 and R5 is advertising the prefix...

Based on the exhibit, which statement about the Layer 2 topology is true?

Your company is integrating another OSPF area into your existing OSPF infrastructure. You created a virtual link that spans Area 2 and connects Area 3 to the backbone area. {master...

Which statement is true about LLDP?

Which CoS feature avoids congestion in a device by limiting traffic on ingress interfaces?

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

Referring to the exhibit, what is the shortest path from R6 to R5?

R1 and R2 are ASBRs in the same area, each with an equal cost external path to the same external network prefix. R1 advertises an external route into OSPF with a Type 1 metric. R2...

Referring to the exhibit, which LSA type will Router R2 inject into Area 1?

You want to control bursts of HTTP traffic entering your SRX Series Gateway. To support varying requirements, interfaces ge-0/0/0 through ge-0/0/3 should each be rate-limited separ...

You are configuring BGP peering with a neighboring AS. Multiple physical links exist between your edge router and the neighboring edge router, and you want a configuration that sup...

An OSPF router is an ABR but not an ASBR. Which three types of LSAs would you expect this router to generate? (Choose three.)

Router R1 in the exhibit is receiving auto-RP announce messages specifying an RP of 192.168.10.1 and BSR messages specifying an RP-set with an RP of 192.168.50.1. Which address wil...

In the exhibit, customers connected to Area 3 must have access to external prefixes received from the data center connected to the router in Area 1. These configurations are curren...

Referring to the output in the exhibit, why does the router prefer the path toward interface ge- 0/0/0.0 for the 20.0.0.0/8 route? 20.0.0.0/8 *[BGP/170] 01:10:38, localpref 100, fr...

Referring to the exhibit, which statement is true? 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....

Given the topology in the exhibit, which two statements related to the Q-in-Q tunneling implementation are true? (Choose two.)

You are implementing Q-in-Q tunneling to connect R1 and R2 using the configurations shown in the exhibit. What must be changed on Switch_A to allow both Dot1q-tunneling VLANs and n...

Based on the exhibit, which spanning-tree protocol is running on ge-0/0/0? user@switch# run show spanning-tree statistics interface ge-0/0/0 STP interface statistics for VLAN 10 In...

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 lim...

Which statement is true about using an OSPF import policy?

Referring to the exhibit, which two statements are correct? (Choose two.)

Which statement is true regarding the SPF algorithm?

You are asked to configure graceful restart in your network. Which OSPF LSA type would you expect to see in the LSDB?

Referring to the exhibit, which answer is correct?

Referring to the exhibit, which statement is true regarding the OSPF network LSA? user@router> show ospf database network extensive OSPF link state database, area 0.0.0.1 Type ID A...

Referring to the exhibit, what is preventing the OSPF adjacency on interface ge-0/0/4 from forming? user@router> show log ospf Sep 19 00:22:13.420315 OSPF packet ignoreD. MTU misma...

Referring to the output in the exhibit, which statement is true? [edit protocols ospf] user@R2# show area 0.0.0.3 { stub default-metric 10 no-summaries; interface ge-0/1/1.0; }

Which two configurations result in the output shown in the exhibit? (Choose two.) user@router> show ospf route Topology default Route Table: Prefix Path Route NH Metric NextHop Nex...

In the exhibit, an EBGP session is currently established between R1 and R2. R2 changes its import policy to accept 10 of the routes it previously denied from R1. Which BGP capabili...

You are using an IBGP route reflector within your network. Your route reflector has received the 2001:1:2::/64 prefix, but it is not advertising the prefix to its cluster members....