JN0-105-1.pdf

Juniper JN0-105 Junos, Associate (JNCIA-Junos) QUESTION & ANSWERS https://www.certsexpert.com/JN0-105-pdf-questions.html QUESTION: 1 Click the Exhibit button. Referring to the exhibit, what should be configured on R1 to advertise a default static route into OSPF? Option A : a firewall filter Option...

Juniper JN0-105 Junos, Associate (JNCIA-Junos) QUESTION & ANSWERS https://www.certsexpert.com/JN0-105-pdf-questions.html QUESTION: 1 Click the Exhibit button. Referring to the exhibit, what should be configured on R1 to advertise a default static route into OSPF? Option A : a firewall filter Option B : a routing policy Option C : a loopback interface Option D : a management interface Correct Answer: B Explanation/Reference: To advertise a default static route into OSPF on router R1, a routing policy should be configured. This policy would typically https://www.certsexpert.com/JN0-105-pdf-questions.html include a statement to match the default route (0.0.0.0/0) and then apply an action to set the route as an OSPF external type, which would then be redistributed into the OSPF domain. The routing policy is a set of conditions and actions that determine how routes are imported into or exported from the routing table and how routes are shared between routing instances or routing protocols. After defining the policy, it must be applied to OSPF under the export section of the OSPF configuration on R1. This process will allow R1 to announce the default route to other OSPF routers in the network, which then can use it as a gateway of last resort to reach the Internet or other networks not explicitly known to the OSPF domain. QUESTION: 2 Which two statements are correct about firewall filters? (Choose two.) Option A : "Discard" is the default action of packets that are not explicitly allowed. Option B : There can be only one firewall filter. Option C : "Accept" is the default action of packets that are not explicitly allowed. Option D : There can be multiple firewall filters. Correct Answer: A,D Explanation/Reference: In Juniper Networks devices, firewall filters are used to control packet flow through the device. The default action for packets that do not match any of the specified criteria in the firewall filter is to discard them, enhancing network security by ensuring that only explicitly allowed traffic can pass through. Furthermore, it is possible to configure multiple firewall filters on a device, allowing for granular control over traffic based on various criteria such as source, destination, and protocol type. QUESTION: 3 Exhibit user@router> show route 192.168.100.2 https://www.certsexpert.com/JN0-105-pdf-questions.html inet.O: 15 destinations, 17 routes (15 active, 0 holddown, 0 hidden) Limit/Threshold: 1048576/1048576 destinations + = Active Route, - = Last Active, * = Both 192.168.100.2/32*[OSPF/IO] 00:14:29, metric 1 > to 172.16.1.6 via ge-0/0/1.0 [BGP/170] 00:06:49, localpref 100 AS path: 65102 I, validation-state: unverified > to 172.16.1.6 via ge-0/0/1.0 Referring to the exhibit, which statement is correct? Option A : The BGP path is the only active route. Option B : The BGP route is preferred over the OSPF route. Option C : The OSPF path is the only active route. Option D : / Traffic is load-balanced across two routes. Correct Answer: C Explanation/Reference: Referring to the exhibit, the presence of the "+" symbol next to the OSPF route for 192.168.100.2/32 indicates that this is the active route being used to forward traffic. The BGP route, although present, does not have the "+" symbol, indicating it is not the active route. In Junos OS, the routing table displays the active route with a "+" symbol, and the fact that the OSPF route has this symbol means it is the preferred path based on the routing protocol'sdecision process, which takes into account factors such as route preference (administrative distance) and metrics. QUESTION: 4 Which Junos OS component is responsible for maintaining the forwarding table? Option A : Routing Engine Option B : chassis control daemon https://www.certsexpert.com/JN0-105-pdf-questions.html Option C : Packet Forwarding Engine Option D : management daemon Correct Answer: C Explanation/Reference: The Packet Forwarding Engine (PFE) in Junos OS is responsible for maintaining the forwarding table. The PFE processes incoming packets, performs route lookups in the forwarding table, and forwards packets based on this information, offloading these tasks from the Routing Engine to ensure efficient packet forwarding. QUESTION: 5 Which criteria does the Junos OS use to select an active route when two entries exist in the routing table? Option A : the route with the lowest preference number Option B : the most recently learned dynamic route Option C : the route with the highest preference number Option D : the route with the highest metric Correct Answer: A Explanation/Reference: In Junos OS, when two entries for the same destination exist in the routing table, the route with the lowest preference number is selected as the active route. This preference number, also known as the route preference or administrative distance, is used to prioritize routes received from different routing protocols. https://www.certsexpert.com/JN0-105-pdf-questions.html QUESTION: 6 When considering routing policies, which two statements are correct? (Choose two.) Option A : Routing policies are applied to interfaces as input or export filters. Option B : An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base. Option C : Policy terms are evaluated from top to bottom with action taken on the first match found. Option D : Policy terms are evaluated from top to bottom with the most restrictive action taken of all the matching terms. Correct Answer: B,C Explanation/Reference: Routing policies in Junos OS are crucial for controlling route advertisements and path selection. The correct answers are B and C. An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base (RIB), and policy terms are evaluated from top to bottom, with action taken on the first match found. This sequential evaluation allows for precise control over routing decisions. QUESTION: 7 Exhibit [edit system archival] user@router# show configuration { transfer-on-commit; archive-sites { "scp://[email protected] : /archive" password## SECRET-DATA "ftp://[email protected]:/archive" password "$9..."; ## SECRET-DATA https://www.certsexpert.com/JN0-105-pdf-questions.html Referring to the exhibit, where are the configuration backup files stored? Option A : Files are storedto the SCP site and the FTP site in a round-robinmanner. Option B : Files are storedto the SCP site and the FTP site simultaneously. Option C : Files are storedto any site as selected by Junos internally. Option D : Files are storedto the SCP site but if the transfer fails, then to theFTP site. Correct Answer: B Explanation/Reference: In Junos OS, thearchivalconfiguration under[edit system]allows for the automatic backup of configuration files to designated locations upon commit. When multiplearchive-sitesare specified, as shown in the exhibit with both SCP and FTP sites listed, the device does not choose between them or use them in a round-robin manner. Instead, it attempts to transfer the configuration backup files to all specified sites simultaneously upon each commit. This ensures redundancy and increases the likelihood that a backup will be successfully stored even if one of the transfer methods or destinations fails. QUESTION: 8 You issue the monitor traffic interface ge-0/0/0 command. What will this command accomplish? Option A : It displays real-time statistics for interface ge-0/0/0. Option B : It displays an operational summary of ge-0/0/0. Option C : It displays the MTU and MAC address for ge-0/0/0. Option D : It displays a packet capture on interface ge-0/0/0. Correct Answer: D https://www.certsexpert.com/JN0-105-pdf-questions.html Explanation/Reference: The command "monitor traffic interface ge-0/0/0" (D) initiates a packet capture on the specified interface, allowing you to view the actual packets being transmitted and received. This is useful for troubleshooting and analyzing the traffic passing through the interface in real time. QUESTION: 9 Which type of device uses the destination IP address to forward packets? Option A : Layer 3 router Option B : Layer 2 switch Option C : repeater Option D : hub Correct Answer: A Explanation/Reference: A Layer 3 router uses the destination IP address to forward packets. The correct answer is A. Routers operate at Layer 3 of the OSI model and make forwarding decisions based on IP addresses. They are responsible for routing packets across different networks by examining the destination IP address contained in the packet's header. https://www.certsexpert.com/JN0-105-pdf-questions.html