New JN0-348 Juniper Study Guide V8.02 | Killtest

2. The safer , easier way to help you pass any IT exams. 1.Which two statements describe aggregate routes? (Choose two.) A. Invalid routing prefixes are not advertised to external peers. B. Internal routing instabilities can be hidden from external peers C. Groups of routes are combined into a single route entry. D. The route receives the next hop of the primary contributing route. Answer: BD 2.You are configuring a new BGP service to your service provider. You want to ensure that BGP is fully established and has all the routes in the route table before allowing traffic to transit the router. Which feature achieves this requirement? A. BGP route reflector B. IS-IS mesh group C. BGP local preference D. IS-IS overload bit Answer: D 3.Which LSA type describes the router ID of ASBR routers located in remote areas? A. Type 4 B. Type 5 C. Type 3 D. Type 7 Answer: A 4.Which two statements are true about Virtual Chassis? (Choose two.) A. It is possible to automatically update the Junos OS on newly added members to participate in the Virtual Chassis B. A software version mismatch on a newly added member must be placed in linecard mode. C. Virtual Chassis members use VCCP to create a loop-free topology. D. The member ID is not preserved through reboots. Answer: AC 5.Click the Exhibit button. 1 / 26

3. The safer , easier way to help you pass any IT exams. You are monitoring your IS-IS router and issue the command shown in the exhibit. Which two statements are true in this scenario? (Choose two.) A. The loopback address of the local router is 5.0.0.100. B. The loopback address of the local router is 10.100.0.1. C. The name of the remote device is r1. D. The name of the local device is r1. Answer: BC 6.Click the Exhibit button. 2 / 26

4. The safer , easier way to help you pass any IT exams. 3 / 26

5. The safer , easier way to help you pass any IT exams. You created a policy to reject all incoming routes from peer 2.2.2.2. You notice that despite applying the policy, you are still receiving routes from this peer. Referring to the exhibit, why are you still receiving the routes? A. The policy should have a form statement. B. You can only block active prefixes. C. The policy should be an import policy. D. You cannot block incoming IBGP routes. Answer: C 7.A customer discovered that a significant outage was caused by an unauthorized Ethernet switching device attached to the network. In this scenario, which two actions would solve this problem? (Choose two.) A. Enable 802.1x. B. Enable persistent MAC learning. C. Enable dynamic ARP inspection. D. Enable storm control. Answer: AB 8.Click the Exhibit button. A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route. Referring to the exhibit, which route would be selected? A. route B B. route D C. route A D. route C Answer: B 9.Which statement is true about GRE tunnels? A. GRE tunnels can be used for only IP packets. B. GRE tunnels ensure that a packet does not live forever. C. Packets are encapsulated unchanged before entering the tunnel. D. GRE tunnels support point-to-multipoint. Answer: C 10.Which device is used to separate collision domains? A. switch B. router C. hub 4 / 26

6. The safer , easier way to help you pass any IT exams. D. firewall Answer: A 11.Click the Exhibit button. Referring to the exhibit, which path will traffic from R6 take to reach R1? A. R6 > R4 > R2 > R1 B. R6 > R4 > R2 > R3 > R1 C. R6 > R5 > R3 > R1 D. R6 > R5 > R3 > R2 > R1 Answer: A 12.Click the Exhibit button. Referring to the exhibit, a packet tagged with vlan-id 34 arrives on interface xe-0/2/3.0 with a source MAC that does not match an entry in the DHCP snooping database. In this scenario, which statement is correct? A. The source MAC is added to the DHCP snooping database. B. An error message is logged and the packet is forwarded. 5 / 26

7. The safer , easier way to help you pass any IT exams. C. The destination MAC added to the DHCP snooping database. D. The packet is forwarded and no error message is logged. Answer: A 13.Which three statements are true regarding not-so-stubby areas (NSSAs)? (Choose three.) A. You cannot configure an area as both an NSSA and a stub area. B. An NSSA exports an external route to the backbone area as a Type 5 LSA. C. An NSSA exports an external route as a Type 3 LSA. D. An NSSA does not require an ABR. E. An NSSA imports an external route as a Type 7 LSA. Answer: ABE 14.Click the Exhibit button. Referring to the exhibit, which effect does the configuration on R2 have on OSPF routing in the network? A. R2 will block traffic destined to the 192.168.10.0/24 network. B. A summary route for the 192.168.10.0/24 network will be advertised to Area 0. C. The 192.168.10.0/24 route will not be advertised to Area 1. D. Area 2 will use a default route to reach Area 0 and Area 1. Answer: C 15.What are two terminating actions of a Layer 2 firewall filter? (Choose two.) A. reject B. accept C. log D. discard Answer: BD 16.Which area is reserved for the OSPF backbone? A. Area 0.0.0.0 6 / 26

8. The safer , easier way to help you pass any IT exams. B. Area 1.1.1.1 C. Area 2.2.2.2 D. Area 3.3.3.3 Answer: A 17.Click the Exhibit button. 7 / 26

9. The safer , easier way to help you pass any IT exams. You are performing network tests and notice that the Layer 3 interface in the Finance VLAN on an EX Series switch is not responding to pings. You review the device status from the console. 8 / 26

10. The safer , easier way to help you pass any IT exams. What is causing the problem, as shown in the exhibit? A. There are no active physical ports in the Finance VLAN. B. There is no route in the routing table for the Finance VLAN Layer 3 interface. C. The Layer 3 interface in the Finance VLAN is administratively disabled. D. There are no interfaces configured in the Finance VLAN. Answer: B 18.You are adding a new EX4300 member switch to your existing EX4300 Virtual Chassis. However, the new member is not running the same Junos version as the other members. By default, what is the expected behavior? A. The new switch is not recognized by the Virtual Chassis. B. The Virtual Chassis will transition into a split brain situation between the existing master Routing Engine and the switch running the different version. C. The new switch will be assigned a member ID and then placed in an inactive state. D. The new switch will automatically pull the correct version from the master Routing Engine and perform the necessary upgrade. Answer: D 19.Click the Exhibit button. Referring to the exhibit, which two statements are true regarding IS-IS adjacencies? (Choose two.) A. Level 1 adjacencies can be formed between Router 3 and Router 4. B. Level 2 adjacencies can be formed between all routers. C. Level 2 adjacencies can only be established between Router 1 and Router 2. D. No IS-IS adjacencies can be formed. Answer: AB 20.Click the Exhibit button. 9 / 26

11. The safer , easier way to help you pass any IT exams. The IS-IS adjacency between routers R1 and R2 will not establish. Referring to exhibit, what is the problem? A. The ISO address is not configured on interface ge-0/0/1. B. The level is not configured under protocols isis. C. The IP address is not configured on interface lo0. D. The link MTU is too small on interface ge-0/0/1. Answer: A 21.Click the Exhibit button. Referring to the outputs shown in the exhibit, which statement is correct? A. The switch is the only switch in the RSTP topology. 10 / 26

12. The safer , easier way to help you pass any IT exams. B. The switch’s bridge priority is 4k. C. The switch’s bridge priority is 16k. D. The switch is not the root bridge. Answer: D 22.Which two statements are true about the IRB interface? (Choose two.) A. An IRB interface is a Layer 3 VLAN interface. B. An IRB interface is a Layer 2 VLAN interface. C. An IRB interface is used to route traffic between VLANs. D. An IRB interface cannot be associated with any VLAN. Answer: AC 23.You have deployed a Juniper EX Series switch in the network. The switch receives a broadcast frame on an interface. Which statement describes the behavior of the switch? A. The frame is flooded out all ports that are part of the same VLAN as the receiving port, except for the port on which the frame was received. B. The frame is flooded out all ports in all VLANs configured on the switch. C. The frame is re-transmitted as a multicast frame on all ports on the switch. D. The frame is flooded out all ports that are part of the same VLAN as the receiving port, including the port on which the frame was received. Answer: A 24.What are three components that populate the Ethernet switching table? (Choose three.) A. the interface on which the traffic was received B. the MAC address of the destination node C. the MAC address of the source node D. the link state E. the time the address was learned Answer: ACE 25.Click the Exhibit button. 11 / 26

13. The safer , easier way to help you pass any IT exams. There are dynamically and statically routed networks attached to the ge-0/0/1 interface on R1. You only want the dynamically learned routes to show up in routing tables for R2 and R3, but the statically routed networks are also appearing. Those networks should only be seen by the R1 device. Which actions would solve the problem? A. Remove the IP address from interface ge-0/0/1. B. Add the no-readvertiseparameter to the static routes. C. Create a routing policy for all routing protocols to drop routes learned from interface ge-0/0/1. D. Place interface ge-0/0/1 into its own routing instance. Answer: B 12 / 26

14. The safer , easier way to help you pass any IT exams. 26.Click the Exhibit button. You are unable to establish a BGP session between R2 and ISP-B. Referring to the exhibit, what must be changed in the configuration? A. A local address statement with the lo0 address must be added to R2 under group external-a. B. An import policy statement must be added to R2 under group external-ato allow ISP-B to peer. C. The type externalstatement must be added to R2 under group external-b. D. The peer-asstatement needs the AS number for ISP-B. Answer: D 27.Which three BGP attributes are well-known and mandatory? (Choose three.) A. AS Path B. Next Hop C. MED D. Local Preference E. Origin Answer: ABE 28.Click the Exhibit button. 13 / 26

15. The safer , easier way to help you pass any IT exams. Referring to the exhibit, which three statements are true? (Choose three.) A. Interface ge-0/0/1 is an access port. B. There are no active ports in the default VLAN. C. The switch cannot be managed through the production network. D. Frames on interface ge-0/0/2 can be tagged with VLAN ID 101 or VLAN 1. E. Frames on interface ge-0/0/0 can be tagged with VLAN ID 101. Answer: ACE 14 / 26

16. The safer , easier way to help you pass any IT exams. 29.Click the Exhibit button. What will be two results of the OSPF configuration shown in the exhibit? (Choose two.) A. A default route will be advertised into Area 1 as a Type 7 LSA. B. Area 0 will not generate summary LSAs for networks in Area 1. C. There will be no Type 3 LSAs in Area 1. D. Only Type 7 LSAs will be present in Area 1. Answer: AB 30.Which protocol prevents loops and calculates the best path through a switched network that contains redundant paths? A. VRRP B. STP C. DHCP D. IS-IS Answer: B Explanation: Spanning Tree Protocol (STP) is a Layer 2protocol that runs on bridges and switches. The main purpose of STP is to ensure that you do not create loops when you have redundant paths in your network 31.You received an alert from your monitoring system that the master Routing Engine (RE) on an EX4300 switch in a virtual chassis has hardware issues and might need to be replaced. Because the switch already had graceful Routing Engine switchover (GRES) enabled and configured, you must perform a manual switchover to the backup RE to avoid disruption. Which command would be used to perform the manual RE switchover? A. Log in to the backup RE and issue the request chassis-control operation command. B. Log in to the backup RE and issue the request chassis routing-engine master switch operation command. C. Log in to the backup RE and issue the request chassis routing-engine master acquire operation command. D. Log in to the backup RE and issue the request iccp-service operation command. Answer: B 32.Click the Exhibit button. 15 / 26

17. The safer , easier way to help you pass any IT exams. You are asked to change the default behavior of your trunk port (ge-0/0/1) to now pass untagged traffic. Which configuration would accomplish this task? A. set interfaces ge-0/0/1 native-vlan-id 1 set interfaces ge-0/0/1 unit 0 family ethernet-switching interface mode trunk vlan members vlan.1 B. set interfaces ge-0/0/1 native-vlan-id 1 set interfaces ge-0/0/1 unit 0 family ethernet-switching interface mode trunk vlan members native C. set interfaces ge-0/0/1 native-vlan-id 1 set interfaces ge-0/0/1 unit 0 family ethernet-switching interface mode trunk vlan members 1 D. set interfaces ge-0/0/1 native-vlan-id 1 set interfaces ge-0/0/1 unit 0 family ethernet-switching interface mode trunk vlan members native_v1 Answer: C 33.You are currently defining a new OSPF area. The area must advertise external routes but should not receive external routes from another area. In this scenario, which type of area should you define? A. stub B. backbone C. not-so-stubby D. totally stubby Answer: A 34.Click the Exhibit button. 16 / 26

18. The safer , easier way to help you pass any IT exams. Referring to the exhibit, which two statement are true? (Choose two.) A. The device will not form adjacencies with devices in a different area. B. The Level 2 database will be empty. C. The IS-IS protocol is disabled on the device. D. The device will not have a Level 2 database. Answer: AB 35.Which static route next-hop value indicated that the packet will be silently dropped? A. resolve B. discard C. reject D. next-table Answer: B 36.Click the Exhibit button. You manage the Layer 2 network shown in the exhibit. You experience a failure on the ge-0/0/0 link between Switch-1 and Switch-2. Which statement is correct about the expected behavior? 17 / 26

19. The safer , easier way to help you pass any IT exams. A. Switch-3’s ge-0/0/2 port role and state will transition to designated and forwarding. B. Switch-3’s ge-0/0/2 port role and state will remain as alternate and discarding. C. Switch-3 will become the root bridge for the RSTP topology. D. Switch-3 will remove the ge-0/0/2 interface from the RSTP topology. Answer: A 37.Click the Exhibit button. Referring to the exhibit, which statement explains why the route to 192.168.178.0/24 advertised from 192.168.35.90 is hidden? A. The import routing policy rejected the route. B. The AS path contains invalid confederation attributes. C. The next-hop address is a multicast address. D. The AS path contains a zero. Answer: A 38.Which two statements describe the BGP Local Preference attribute? (Choose two.) A. The attribute can be altered through a BGP configuration or using a policy. 18 / 26

20. The safer , easier way to help you pass any IT exams. B. The attribute is transmitted across EBGP links. C. The attribute can be given a higher preference by configuring a lower numerical value. D. The attribute can be used to direct all outbound traffic through a specific peer. Answer: AD 39.Click the Exhibit button. You have an existing Virtual Chassis consisting of five member devices. Member 3 fails and must be replaced. You remove the EX Series switch with a Member ID of 3 and install a replacement switch in its place using identical cabling as shown in the exhibit. The replacement’s member ID is 6, so the configuration for member ID 3 is not applied to it. Referring to the exhibit, what should have been done before installing the replacement switch? A. Reactivate the Virtual Chassis. B. Recycle the member ID of the switch being replaced. C. Renumber the member IDs. D. Clear the Virtual Chassis protocol. Answer: B 40.Click the Exhibit button. 19 / 26

21. The safer , easier way to help you pass any IT exams. What would cause the status of interface ge-0/0/8 as shown in the exhibit? A. Interface ge-0/0/8 is physically down and is not forwarding traffic. B. Interface ge-0/0/8 has a firewall filter in place that is blocking traffic. C. Interface ge-0/0/8 is administratively disabled and is not forwarding traffic. D. Interface ge-0/0/8 is connected to the same LAN as one of the other ports. Answer: D 41.What are three types of bridge protocol data units? (Choose three.) A. media endpoint discovery B. topology change acknowledgement 20 / 26

22. The safer , easier way to help you pass any IT exams. C. topology change notification D. type length value E. configuration Answer: BCE 42.An EX Series switch receives a frame with an unknown destination MAC address. What is the expected behavior? A. The frame is sent out all ports assigned to all configured VLANs except the ingress port on which the frame was received. B. The frame is sent out all access ports associated with the ingress VLAN regardless of whether a matching MAC address was found in the bridge table. C. The frame is sent out all ports assigned to the associated VLAN except the ingress port on which the frame was received. D. The frame is sent out all trunk ports associated with the ingress VLAN regardless of whether a matching MAC address was found in the bridge table. Answer: C 43.Click the Exhibit button. You are establishing a BGP session between R1 and R2. R2 shows 172.24.1.1 as its peer address for R1 instead of 192.168.100.1. Referring to the exhibit, what must be changed in the configuration? A. A peer-as statement must be added to R1 in the internal group. B. An export policy statement must be added to R1 in the internal group to allow the lo0 address to peer. C. A local interface statement with the lo0 address must be added to R1 in the internal group. D. A local address statement with the lo0 address must be added to R1 in the internal group. Answer: D 21 / 26

23. The safer , easier way to help you pass any IT exams. 44.What is considered a requirement for passing traffic through GRE tunnels? A. Tunnel endpoints must have static routes pointing to the remote endpoints. B. You must configure the tunnel on the physical interface connecting to the remote endpoint. C. You must be able to reach the remote endpoint through the tunnel. D. Tunnel endpoints must have a route that directs traffic into the tunnel. Answer: C 45.Which two values are used to generate a bridge ID when using STP? (Choose two.) A. system MAC address B. bridge priority C. port identifier D. loopback IP address Answer: AB 46.Click the Exhibit button. You are troubleshooting an IS-IS adjacency problem as shown in the exhibit. 22 / 26

24. The safer , easier way to help you pass any IT exams. Which action would solve the problem? A. Configure matching authentication keys. B. Configure the INET6 family for the loopback interface. C. Configure the ISO family for the loopback interface. D. Configure matching area IDs. Answer: D 47.You manage a Layer 2 network that spans two buildings. You are asked to ensure that all traffic that traverses this connection between the two buildings is secured. Which port security feature should be used to secure this Layer 2 traffic? A. IP source guard B. MACsec C. DHCP snooping D. dynamic ARP inspection Answer: B 48.You are troubleshooting your OSPF configuration and notice that you have subnet mismatch errors when running the show ospf statisticscommand. Which two actions would further troubleshoot the errors? (Choose two.) A. Examine your interface configuration on impacted devices. B. Examine the interface assignment to areas in your OSPF configuration. C. Examine the stub configuration for mismatches. D. Examine messages from the traceoptions log file. Answer: AD 49.Which statement describes optional transitive BGP attributes? A. They must be supported in all BGP implementations, but do not have to be included in every BGP update. B. If they are not recognized, they are ignored and not passed to other peers. C. They must be supported by all BGP implementations and must be included in every BGP update. D. Although not required, they should be passed along, unchanged to other BGP peers when included. Answer: D 50.Click the Exhibit button. 23 / 26

25. The safer , easier way to help you pass any IT exams. Referring to the exhibit, which statement is correct? A. 10.20.20.1 will be the active next hop. B. 10.30.30.1 will be the active next hop. C. Packets will be load balanced. D. Next hops 10.20.20.1 and 10.30.30.1 will both be active. Answer: A 51.Click the Exhibit button. Referring to the exhibit, why is the 0.0.0.0/0 route hidden? A. The next hop is set to discard. B. You already have an active BGP default route. C. You cannot make a 0.0.0.0/0 generated route. D. There are no contributing routes. Answer: D 52.What are two OSPF packet types that use multicast for communication on a multicast segment? (Choose two.) A. hello B. link-state request C. database description 24 / 26

26. The safer , easier way to help you pass any IT exams. D. link-state update Answer: AD 53.Click the Exhibit button. The configuration shown in the exhibit was committed on an EX Series switch. You are notified that the phone using the voice VLAN does not work. You determine that voice traffic is not passing through the local switch. What should be done to solve the problem? A. You should add the voice VLAN as a member on the ge-0/0/8.0 interface. B. You should change the port mode on ge-0/0/9.0 to trunk. C. You should add the voice VLAN as a member on the ge-0/0/9.0 interface. D. You should change the voice VLAN ID to match the data VLAN ID. Answer: A 54.There is a GRE tunnel configured over the Internet between Router-1 and Router-2. An OSPF adjacency is configured over this GRE tunnel. However, the OSPF adjacency briefly reaches the Full state before it is torn down. This cycle repeats indefinitely. Which two actions would you perform to solve this problem? (Choose two.) A. Configure OSPF to not export the tunnel endpoint interface routes. B. Configure the GRE interfaces on both routers as passive interfaces in OSPF. 25 / 26

27. The safer , easier way to help you pass any IT exams. C. Configure the physical WAN interfaces on both routers as passive OSPF interfaces. D. Configure static routes to the tunnel endpoints. Answer: AD 26 / 26