[2024年08月] 最新のJuniper JN0-105テスト問題集とオンライン試験エンジン
Juniper JN0-105問題を提供していますJNCIA問題集と完璧な解答付き
質問 # 50
You are creating a new policy to accept and redistribute routes into your IGP.
In this scenario, which match criteria would you use to identify the route prefixes to select?
- A. route-filter
- B. neighbor
- C. route-type
- D. instance
正解：A
解説：
When creating a policy to accept and redistribute routes into your IGP, "route-filter" (D) is the match criteria used to identify specific route prefixes. Route filters enable you to specify which routes should be accepted, rejected, or modified based on their attributes, such as prefix length or value.
質問 # 51
Which process in the Junos OS is responsible for device management tasks including the CLI and commit operations?
- A. rpd
- B. mgd
- C. dcd
- D. chassisd
正解：B
解説：
In Junos OS, the management daemon (mgd) is responsible for handling all the device management tasks, including processing CLI commands and handling commit operations. The mgd daemon interacts with the Junos OS configuration database and provides the necessary logic to ensure that configuration changes are syntactically correct and do not conflict with each other. When a user commits a configuration, mgd validates the changes, applies them to the running configuration, and ensures that the necessary daemons are notified of the changes to apply them accordingly.
質問 # 52
Which two statements apply to the Routing Engine functions? (Choose two.)
- A. It processes the transit traffic.
- B. It does not process routing updates.
- C. It responds to ping and traceroute commands.
- D. It maintains the routing tables.
正解：C、D
解説：
The Routing Engine (RE) in Juniper Networks devices plays a critical role in the control plane operations. One of its functions includes responding to network utility commands like ping and traceroute, which are essential for diagnosing network connectivity and path issues. Furthermore, the RE is responsible for maintaining the routing tables, which contain information about network paths and destinations. These tables are vital for making forwarding decisions but are distinct from the actual forwarding of packets, which is handled by the Packet Forwarding Engine (PFE).
質問 # 53
Which component is considered part of the data plane?
- A. the fan tray
- B. the Packet Forwarding Engine
- C. the Routing Engine
- D. the power supply
正解：B
解説：
The Packet Forwarding Engine (PFE) is an integral component of Juniper Networks devices, responsible for the data plane operations. The data plane, also known as the forwarding plane, is where the actual processing and forwarding of packets occur based on the routing and forwarding tables. The PFE executes the forwarding decisions made by the Routing Engine (RE), handling all packet transmissions, including routing, filtering, and switching packets towards their destination. This contrasts with the control plane operations handled by the RE, which involve routing table maintenance, system management, and control protocol processing.
質問 # 54
What are two attributes of the UDP protocol? (Choose two.)
- A. UDP is best effort.
- B. UDP is always slower than TCP.
- C. UDP is connectionless.
- D. UDP is more reliable than TCP.
正解：A、C
解説：
UDP (User Datagram Protocol) is known for being connectionless (D) and providing best-effort delivery without the reliability mechanisms present in TCP (C). This means that UDP does notestablish a connection before sending data and does not guarantee delivery, order, or error checking, making it faster but less reliable than TCP.
質問 # 55
Which protocol would you configure to synchronize the time and date on a Junos device?
- A. RIP
- B. SNMP
- C. NTP
- D. NMP
正解：C
解説：
The Network Time Protocol (NTP) is designed to synchronize the clocks of computers over a network.
Configuring NTP on a Junos device ensures that its clock is set accurately, which is crucial for logging, troubleshooting, and maintaining the integrity of time-sensitive operations and security protocols. NTP allows devices to use a hierarchy of time sources, from primary servers synchronized to a reference clock (such as an atomic clock or GPS time) to secondary servers that distribute the time to other devices on the network.
質問 # 56
Which type of device uses the destination IP address to forward packets?
- A. Layer 3 router
- B. repeater
- C. hub
- D. Layer 2 switch
正解：A
解説：
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.
質問 # 57
What are two benefits when implementing class of service? (Choose two.)
- A. Traffic congestion will be eliminated.
- B. Traffic congestion can be managed.
- C. Latency-sensitive traffic can be prioritized
- D. The network will be faster.
正解：A、C
解説：
Implementing Class of Service (CoS) in a network provides numerous benefits, particularly in managing traffic based on its importance, source, or type. CoS enables network administrators to manage traffic congestion by applying various queuing techniques and policies to ensure that critical services remain unaffected during high congestion periods. Additionally, CoS allows for the prioritization of latency-sensitive traffic such as voice and video, ensuring that these services maintain quality despite varying network conditions.
質問 # 58
Which service does RADIUS provide?
- A. authentication
- B. routing
- C. time synchronization
- D. DNS resolution
正解：A
解説：
RADIUS, which stands for Remote Authentication Dial-In User Service, provides authentication services for users trying to access a network. It is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for users who connect and use a network service.
質問 # 59
What are two functions of the Routing Engine? (Choose two.)
- A. It processes transit traffic.
- B. It runs the Junos operating system.
- C. It processes all management traffic.
- D. It evaluates firewall filters for transit traffic.
正解：B、C
解説：
The Routing Engine (RE) in Junos OS has several critical functions, including processing all management traffic (A) and running the Junos operating system (B). The RE handles system management tasks, user interfaces, system services, and routing protocol processes. It does not directly process transit traffic or evaluate firewall filters for transit traffic, as these tasks are handled by the Packet Forwarding Engine (PFE).
質問 # 60
How many login classes are assignable to a user account?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
解説：
Junos OS supports multiple login classes that can be assigned to user accounts, allowing for different levels of access and permissions. The correct answer is C, 4. These classes include "super-user," "read-only,"
"operator," and "unauthorized." Each class provides a different level of access to the Junos device, ranging from full configuration and operational command privileges to limited access for monitoring and viewing configurations.
質問 # 61
A network administrator is attempting to route traffic on a Juniper switch to one of three different VLANs:
Prod, Test, and Dev. Each VLAN has been assigned a numerical value.
In this scenario, what are these numerical values called?
- A. defaults
- B. tags
- C. interfaces
- D. names
正解：B
解説：
In the context of VLANs (Virtual Local Area Networks) on a Juniper switch, the numerical values assigned to each VLAN, such as those for Prod, Test, and Dev, are known as VLAN tags. These tags are part of the
802.1Q VLAN standard, which allows multiple VLANs to coexist on a single physical network. Each tag uniquely identifies the VLAN to which a frame belongs, enabling the switch to segregate and manage traffic based on VLAN membership. This tagging mechanism allows for efficient traffic separation and management, ensuring that devices within one VLAN do not receive traffic intended for another, thus maintaining network security and efficiency.
質問 # 62
Which process in the Junos OS is responsible for maintaining routing protocols and tables?
- A. mgd
- B. dcd
- C. rpd
- D. chassisd
正解：C
解説：
The Routing Protocol Daemon (rpd) in Junos OS is responsible for maintaining routing protocols and tables. It handles all routing information, including the calculation of routes and the population of the routing table, making it crucial for dynamic routing operations.
質問 # 63
What does the user@router> clear log ospf-trace command accomplish?
- A. Logging data into ospf-trace is stopped.
- B. Trace parameters are removed from the OSPF protocol configuration.
- C. Data in the ospf-trace file is removed and logging continues.
- D. The ospf-trace file is deleted.
正解：C
解説：
The clear log ospf-trace command on a Juniper Networks router is used specifically to manage the contents of the log file named ospf-trace. Executing this command clears or deletes the existing data within the ospf-trace log file but does not stop the logging process. The router continues to log new OSPF-related events and data into this file after the command is executed. This functionality is crucial for troubleshooting and monitoring the OSPF (Open Shortest Path First) protocol's operation by allowing network administrators to remove old or irrelevant log data while continuously capturing new events without interruption.
質問 # 64
An administrator configures a router's interface with an IPv4 address and subnet mask. The administrator also confirms that this interface is in an up state.
In this scenario, which two route types are created on the local router? (Choose two.)
- A. a static route
- B. a local route
- C. a dynamic route
- D. a direct route
正解：B、D
解説：
When an interface on a router is configured with an IPv4 address and is in an up state, two types of routes are automatically created in the routing table: a local route and a direct route, making B and D the correct answers.
The local route represents the interface's IP address itself, indicating that the router can directly receive packets addressed to this IP. The direct route represents the subnet or network segment to which the interface is connected, indicating that the router can directly forward packets to destinations within this subnet.
質問 # 65
Which statement is correct when multiple users are configuring a Junos device using the configure private command?
- A. Each user shares the same candidate configuration.
- B. A commit will not succeed until there is only a single user in configuration mode.
- C. A commit by any user will commit changes made by all active users.
- D. Each user gets their own candidate configuration.
正解：D
解説：
When multiple users are configuring a Junos device using the "configure private" command, each user gets their own candidate configuration (C). This allows for isolated configuration sessions, where changes made by one user do not impact or interfere with the changes made by another user in their private session.
質問 # 66
Which two actions happen when multiple users issue the configure exclusive command to enter configuration mode on a Junos device? (Choose two.)
- A. The candidate configuration is unlocked.
- B. Other users cannot enter configuration mode.
- C. The candidate configuration is locked.
- D. Other users can enter configuration mode.
正解：B、C
解説：
In Junos OS, when a user issues the configure exclusive command, it locks the candidate configuration for that user, preventing other users from making concurrent configuration changes. This exclusive lock ensures that configuration changes are managed in a controlled manner, reducing the risk of conflicting changes. As a result, while one user is in exclusive configuration mode, other users are prevented from entering configuration mode until the lock is released, either by the user committing the changes or exiting configuration mode.
質問 # 67
What are two types of transit traffic that traverse the forwarding plane of a Layer 3 router? (Choose two.)
- A. broadcast traffic
- B. exception traffic
- C. multicast traffic
- D. unicast traffic
正解：C、D
解説：
Transit traffic that traverses the forwarding plane of a Layer 3 router includes both unicast and multicast traffic types. Unicast traffic is directed from a single source to a single destination, while multicast traffic is sent from one source to multiple destinations that are part of a multicast group. These types of traffic are efficiently routed through the network by leveraging the router's forwarding plane capabilities. Exception traffic, which requires special handling by the control plane, and broadcast traffic, which is typically limited to a single broadcast domain and not usually forwarded by Layer 3 routers, are not considered standard types of transit traffic for the forwarding plane of a router.
質問 # 68
Your network infrastructure transports data, voice, and video traffic. Users are complaining that voice and video calls are not performing to their expectations.
In this scenario, which technology would you implement to improve voice and video performance on your network?
- A. CoS
- B. STP
- C. NAT
- D. IPv6
正解：A
解説：
In a network that carries diverse types of traffic like data, voice, and video, ensuring the performance of latency-sensitive applications such as voice and video calls is crucial. Class of Service (CoS) is a technology designed to prioritize network traffic, ensuring that critical applications like voice and video receive the necessary bandwidth and minimal latency. CoS mechanisms can include traffic classification, traffic policing, queue management, and scheduling. By implementing CoS, network administrators can assign higher priority to voice and video traffic, thus improving their performance across the network and addressing the users' complaints about call quality.
質問 # 69
Which two statements are correct about a Routing Engine? (Choose two.)
- A. It processes management traffic.
- B. It forwards transit traffic.
- C. It maintains routing tables.
- D. It processes CoS marked traffic.
正解：A、C
解説：
The Routing Engine (RE) in Juniper Networks devices plays a pivotal role in the control plane, handling tasks that are critical for the operation and management of the network. One of its key functions is processing management traffic, which includes user commands, system configuration, and monitoring operations. The RE also maintains routing tables, which are essential for network routing decisions. These tables contain network topology information and routing paths, which the RE uses to update the Packet Forwarding Engine (PFE) so that it can forward packets appropriately. The RE does not forward transit traffic or process Class of Service (CoS) marked traffic, as these tasks are handled by the PFE.
質問 # 70
Click the Exhibit button.
Referring to the exhibit, what should be configured on R1 to advertise a default static route into OSPF?
- A. a loopback interface
- B. a routing policy
- C. a management interface
- D. a firewall filter
正解：B
解説：
To advertise a default static route into OSPF on router R1, a routing policy should be configured. This policy would typically 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.
質問 # 71
You are asked to convert the number 7 from decimal to binary.
Which number is correct in this scenario?
- A. 00001000
- B. 00010000
- C. 00000111
- D. 0
正解：C
解説：
To convert the decimal number 7 to binary, the correct representation is 00000111 (C). In binary, 7 is represented as 1+2+4 (2^0 + 2^1 + 2^2), which corresponds to the last three digits being 1 in the binary format, with leading zeros added for clarity.
質問 # 72
Which Junos feature limits the amount of exception traffic that is sent from the PFE to the RE?
- A. routing policy
- B. scheduler
- C. policer
- D. CoS markings
正解：C
解説：
In Junos OS, a policer is a feature used to limit the rate of traffic flow in the network, including exception traffic sent from the Packet Forwarding Engine (PFE) to the Routing Engine (RE). Exception traffic consists of packets that cannot be processed by the PFE alone and requireintervention by the RE, such as control packets or packets destined for the device itself. A policer can be configured to enforce bandwidth limits and drop or mark packets that exceed specified rate limits, thus protecting the RE from being overwhelmed by excessive exception traffic.
質問 # 73
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
.
Referring to the exhibit, where are the configuration backup files stored?
- A. Files are storedto the SCP site but if the transfer fails, then to theFTP site.
- B. Files are storedto any site as selected by Junos internally.
- C. Files are storedto the SCP site and the FTP site simultaneously.
- D. Files are storedto the SCP site and the FTP site in a round-robinmanner.
正解：C
解説：
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.
質問 # 74
......
2024年最新のJN0-105テスト解説（更新されたのは98問があります)：https://www.passtest.jp/Juniper/JN0-105-shiken.html
信頼され続けるJN0-105試験のコツがあるPDF試験材料：https://drive.google.com/open?id=1-MdfdSzxk9xqAPtJZcz_Mc15PzlMMw7o