Pass4Test zusammengestellt Juniper JN0-352 mit Original-Prüfungsfragen und präzise Antworten, wie sie in der eigentlichen Prüfung erscheinen. Eine der Tatsachen Sicherstellung einer hohen Qualität der Enterprise Routing and Switching, Specialist (JNCIS-ENT)-Prüfung ist die ständig und regelmäßig zu aktualisieren. Pass4Test ernennt nur die besten und kompetentesten Autoren für ihre Produkte und die Prüfung Pass4Test JN0-352 zum Zeitpunkt des Kaufs ist absoluter Erfolg.
| Section | Objectives |
|---|---|
| High Availability | - Redundancy concepts in enterprise networks - VRRP configuration and behavior |
| Operations and Troubleshooting | - Troubleshooting routing and switching issues - Junos CLI monitoring tools |
| Layer 2 Switching Technologies | - Spanning Tree Protocol (STP/RSTP/MSTP) - Ethernet switching concepts - VLANs and trunking |
| Routing Policy and Filtering | - Route filtering and preference control - Policy statements |
| Routing Protocols | - OSPF configuration and troubleshooting - IS-IS overview - BGP fundamentals and policy control |
| Network Services | - Basic multicast concepts - NAT concepts in Junos |
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54. Frage
What is the maximum allowable MTU size for a default GRE tunnel without IPv4 traffic fragmentation?
Antwort: C
Begründung:
The maximum allowable MTU size for a default GRE tunnel without IPv4 traffic fragmentation is
1476 bytes. This is because GRE packets are formed by the addition of the original packets and the required GRE headers. These headers are 24-bytes in length and since these headers are added to the original frame, depending on the original size of the packet we may run into IP MTU problems. The most common IP MTU is 1500-bytes in length (Ethernet). When the tunnel is created, it deducts the 24-bytes it needs to encapsulate the passenger protocols and that is the IP MTU it will use. For example, if we are forming a tunnel over FastEthernet (IP MTU 1500) the IOS calculates the IP MTU on the tunnel as: 1500-bytes from Ethernet-24-bytes for the GRE encapsulation = 1476-Bytes.
55. Frage
Which two characteristics describe the default behavior of aggregate routes? (Choose two.)
Antwort: A,B
Begründung:
The entire purpose of route aggregation is summarization -- replacing a set of more-specific contributing routes with a single, broader prefix advertised outward -- and this summarization inherently hides internal routing instability from external peers: if one of the underlying contributing /24 blocks within a summarized /16 flaps up and down due to a local link issue, external peers who only see the stable, unchanging /16 aggregate are completely insulated from that churn, since the aggregate itself remains active and advertised as long as at least one contributing route is present, regardless of how much internal fluctuation occurs among the individual contributors. This stability- hiding characteristic is one of the primary operational benefits that motivates using aggregate routes in the first place, confirming that statement as correct. Regarding next-hop behavior, official Juniper documentation is explicit and unambiguous:
when an aggregate route is installed in the routing table, Junos assigns it a reject next hop by default, meaning traffic matching only the aggregate (and no more-specific contributor) is dropped and an ICMP unreachable message is returned to the source; a discard next hop is available only as an optional, explicitly configured alternative when silent dropping without ICMP notification is preferred, but it is not the default. Aggregate routes categorically do not advertise their individual contributing routes; suppressing those specific, more- granular prefixes from onward advertisement in favor of the single summary is the aggregate's defining function, directly contradicting the first statement.
56. Frage
Referring to the exhibit, why is the route for 10.5.5.5 hidden?
Antwort: A
57. Frage
Which two statements are correct about using firewall filters on EX Series switches? (Choose two.)
Antwort: A,D
Begründung:
A is correct because you can deploy only stateless firewall filters on an EX Series switch. A stateless firewall filter is a filter that evaluates each packet individually based on the header information, such as source and destination addresses, protocol, and port numbers. A stateless firewall filter does not keep track of the state or context of a packet flow, such as the sequence number, flags, or session information. EX Series switches support only stateless firewall filters, which are also called access control lists (ACLs) or packet filters.
C is correct because you can apply firewall filters to both Layer 2 and Layer 3 traffic on an EX Series switch. Layer 2 traffic is traffic that is switched within a VLAN or a bridge domain, while Layer 3 traffic is traffic that is routed between VLANs or networks. EX Series switches support three types of firewall filters: port (Layer 2) firewall filters, VLAN firewall filters, and router (Layer
3) firewall filters. You can apply these filters to different interfaces and directions to control the traffic entering or exiting the switch.
58. Frage
Which two statements about redundant trunk groups on EX Series switches are correct? (Choose two.)
Antwort: A,D
Begründung:
Redundant trunk groups are designed to provide link redundancy. If the primary link fails, the secondary link will automatically take over to ensure continued connectivity.
In redundant trunk groups, while regular data traffic is sent over the primary link, Layer 2 control traffic (such as STP, LACP, etc.) is allowed on the secondary link to maintain network stability and protocol operations.
https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/redundant-trunk-groups.html
59. Frage
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