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Juniper JN0-280 試験は、データセンターネットワーキングとJuniper Networksのテクノロジーに興味を持つITプロフェッショナルにとって重要な資格です。この認定は、新しいキャリアの機会を開き、候補者のこの分野での専門知識を証明することができます。試験に備える時間をかけることで、候補者は試験に合格し、この貴重な認定を取得する可能性を高めることができます。
質問 # 53
Which of the following statements are true regarding Graceful Restart (GR)? (Choose two)
- A. It decreases network stability during protocol restarts.
- B. It requires support from both the restarting router and its neighbors.
- C. It helps in maintaining uninterrupted forwarding during a routing process restart.
- D. It is used to increase the convergence time of the network.
正解：B、C
質問 # 54
What is a common issue to check for when troubleshooting a LAG not forming correctly?
- A. Overutilization of CPU resources
- B. Mismatched VLAN configurations
- C. Identical IP addresses on all LAG interfaces
- D. Excessive broadcast traffic
正解：B
質問 # 55
In OSPF, what is the function of the Link-State Database (LSDB)?
- A. To log changes in network topology.
- B. To store OSPF routing tables.
- C. To keep the topology structure of the network.
- D. To maintain a list of OSPF neighbors.
正解：C
質問 # 56
Which of the following is a key benefit of implementing High Availability (HA) in a network?
- A. Slower data recovery
- B. Reduced network security
- C. Enhanced data redundancy
- D. Increased network downtime
正解：C
質問 # 57
Which of the following are true regarding port modes in a VLAN setup? (Choose two)
- A. An access port can carry traffic for multiple VLANs.
- B. An access port carries traffic only for a single VLAN.
- C. A trunk port is used exclusively for inter-switch links.
- D. A trunk port can carry traffic for multiple VLANs.
正解：B、D
質問 # 58
In OSPF, how is the Router ID determined?
- A. By a manually configured value in the router configuration.
- B. By the highest loopback interface IP address.
- C. By the lowest MAC address of the router.
- D. By the highest IP address on any of the router's active interfaces.
正解：B
質問 # 59
What is the primary purpose of using aggregate routes in a network?
- A. To filter unwanted traffic
- B. To statically define a route to a specific destination
- C. To dynamically adjust to network changes
- D. To summarize and reduce the number of routes in the routing table
正解：D
質問 # 60
Which OSPF packet types are used to establish and maintain neighbor relationships? (Choose two)
- A. Link State Request packets
- B. Link State Update packets
- C. Hello packets
- D. Database Description packets
正解：C、D
質問 # 61
Referring to the exhibit, how many collision domains are present in the topology?
- A. 0
- B. 1
- C. 2
- D. 3
正解：C
質問 # 62
What is the primary purpose of OSPF in network routing?
- A. To provide path vector routing within an autonomous system.
- B. To redistribute routes between autonomous systems.
- C. To encrypt data traffic between different networks.
- D. To offer dynamic routing within an autonomous system using link-state information.
正解：D
質問 # 63
In networking, what is a RIB group primarily used for?
- A. To group multiple Routing Information Bases together for a common purpose
- B. To dynamically generate routing entries
- C. To filter routes based on specific criteria
- D. To balance the load across multiple links
正解：A
質問 # 64
Which LSA types are associated with OSPF? (Choose three)
- A. Network LSA (Type 2)
- B. Router LSA (Type 1)
- C. Summary LSA (Type 3)
- D. External LSA (Type 5)
正解：A、B、C
質問 # 65
When configuring static routes, which command is typically used?
- A. set routing-options rib-groups
- B. set firewall filter
- C. set route aggregate
- D. set protocols static route
正解：D
質問 # 66
What is the purpose of using route reflectors in BGP?
- A. To automatically select the best route
- B. To increase the speed of BGP convergence
- C. To encrypt BGP messages
- D. To reduce the number of required IBGP sessions in a network
正解：D
質問 # 67
Which of the following VLAN port modes exist in Junos OS? (Choose two)
- A. Tunnel
- B. Trunk
- C. Aggregated
- D. Access
正解：B、D
質問 # 68
What does filter-based forwarding in networking typically allow?
- A. Routing decisions based on extended criteria like packet headers
- B. Load balancing across multiple CPUs
- C. Aggregation of multiple routes into a single entry
- D. Forwarding decisions based on MAC addresses
正解：A
質問 # 69
Fill in the blank: In BGP, a route received from an ___________ peer will not be advertised to another ___________ peer by default.
- A. EBGP, IBGP
- B. EBGP, EBGP
- C. IBGP, IBGP
- D. Static, Dynamic
正解：C
質問 # 70
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