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Juniper Reliable JN0-281 Test Braindumps: Data Center, Associate (JNCIA-DC) - Real4exams Pass GuaranteedWhen you decide to prepare for the Juniper certification, you must want to pass at first attempt. Now, make a risk-free investment in training and certification with the help of JN0-281 practice torrent. Our JN0-281 test engine allows you to practice until you think it is ok. Our JN0-281 Questions are the best relevant and can hit the actual test, which lead you successfully pass. Please feel confident about your JN0-281 preparation with our 100% pass guarantee. Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q144-Q149):NEW QUESTION # 144
What are two device roles in a five-member Virtual Chassis? (Choose two.)
A. PFE
B. Line card
C. Control-board
D. Routing-engine
Answer: B,D
Explanation:
In a Virtual Chassis (VC) configuration, multiple Juniper switches are interconnected to form a single logical device. Each member switch in the Virtual Chassis plays a specific role.
Step-by-Step Breakdown:
Line Card Role:
Member switches acting as line cards provide additional ports for traffic forwarding but do not perform control or routing functions. These switches depend on the routing engine to handle control-plane tasks.
Routing Engine Role:
A switch in the routing-engine role is responsible for control-plane operations such as routing protocol management and control of the Virtual Chassis.
Virtual Chassis Roles:
Master Routing Engine: Handles control-plane functions and manages the entire Virtual Chassis.
Backup Routing Engine: Takes over if the master fails.
Line Card: Provides additional ports and handles data-plane operations.
Juniper Reference:
Virtual Chassis: In a five-member Virtual Chassis, multiple switches act as line cards, while one or more switches are designated as the routing engines (master and backup).
NEW QUESTION # 145
When configuring MAC address filtering on a Junos switch, which feature is primarily used?
A. RADIUS
B. Firewall filters
C. Access Control Lists (ACLs)
D. Port security
Answer: D
NEW QUESTION # 146
Which statement is correct about per-flow load balancing?
A. The packets are guaranteed to arrive at their destination in a different order in which they were sent.
B. Packets associated with the same flow are sent through the same egress port.
C. The packets are guaranteed to arrive at their destination in the same order in which they were sent.
D. Packets associated with the same flow are sent through different egress ports.
Answer: B
Explanation:
Per-flow load balancing ensures that packets within the same flow are always forwarded over the same path, ensuring that packet order is preserved.
Step-by-Step Breakdown:
Flow Definition:
A flow is typically defined by a combination of packet attributes like source/destination IP, source/destination port, and protocol type. Packets that belong to the same flow are routed over the same path to avoid reordering.
Per-Flow Behavior:
In per-flow load balancing, the hashing algorithm ensures that all packets in a particular flow use the same egress port, maintaining order across the network. Juniper Reference: Load Balancing in Juniper: This method ensures that flows are balanced across multiple paths while preventing packet reordering within a single flow.
NEW QUESTION # 147
Which two prefixes are contributing routes to a 10.20.0.0/18 aggregate route? (Choose two)
A. 10.20.0.0/16
B. 10.20.60.0/23
C. 10.20.0.0/24
D. 10.20.100.0/24
Answer: B,C
NEW QUESTION # 148
Which state in the adjacency process do OSPF routers check the MTU size?
A. Exchange
B. Done
C. ExStart
D. Init
Answer: A
Explanation:
In OSPF, routers exchange link-state information in different stages to establish full adjacency. The MTU size is checked during the Exchange state.
Step-by-Step Breakdown:
OSPF Adjacency Process:
OSPF routers go through multiple stages when forming an adjacency: Down, Init, 2-Way, ExStart, Exchange, Loading, and Full.
Exchange State:
During the Exchange state, OSPF routers exchange Database Description (DBD) packets to describe their link-state databases. The MTU size is checked at this stage to ensure both routers can successfully exchange these packets without fragmentation.
If there is an MTU mismatch, the routers may fail to proceed past the Exchange state.
Juniper
Reference: MTU Checking in OSPF: Junos uses the Exchange state to check for MTU mismatches, ensuring that routers can properly exchange database information without packet fragmentation issues.
NEW QUESTION # 149
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