Nokia 4A0-D01テストエンジン練習テスト問題、試験問題集
100%無料4A0-D01日常練習試験には37問があります
質問 # 14
Which of the following statements about Nokia's SR Linux logging is FALSE?
- A. Logging parameter configuration is translated into the /etc/rsyslog.conf file.
- B. SR Linux supports the use of filters to select log messages.
- C. SR Linux logs can be saved locally as an encrypted file.
- D. SR Linux logs are handled using facility Iocal6 of the native Linux syslog utility.
正解:C
解説:
Nokia SR Linux does not natively support saving logs locally as encrypted files. Logs are managed using standard Linux syslog facilities and can be filtered, but encryption of local log files is not a built-in feature.
質問 # 15
Which of the following is NOT a valid logging source used in Nokia's SR Linux?
- A. Linux facility + priority
- B. Syslog filter
- C. SR Linux subsystem + priority
- D. Console
正解:B
解説:
"Syslog filter" is not a logging source; it is a mechanism used to filter log messages. Valid logging sources in SR Linux include Linux facility + priority, console, and SR Linux subsystem + priority.
質問 # 16
Which of the following statements about a MAC-VRF is FALSE?
- A. Bridge table entries contain an exit interface for each destination address.
- B. Packets received in a MAC-VRF are forwarded based on destination IP address.
- C. Multiple devices can be connected to the same IP subnet using a MAC-VRF.
- D. A MAC-VRF is a Layer 2 network instance.
正解:B
解説:
In a MAC-VRF, packets are forwarded based on Layer 2 information such as destination MAC addresses, not on destination IP addresses.
質問 # 17
Which of the following statements about the MAC table shown in the exhibit output is FALSE?
- A. The MAC address 00:25: BA:00:00:10 is learnt on more than one interface.
- B. The MAC re-learning rate has exceeded the threshold within the specified time frame.
- C. [interface ethernet-1/10 is configured with the MAC address 00:25:BA:00:00:10.
- D. Mac-duplication detection is enabled in mac-vrf-1.
正解:A
解説:
The MAC address 00:25:BA:00:00:10 is listed as "duplicate," but it appears only once associated with interface ethernet-1/10. Therefore, it is not learned on more than one interface.
質問 # 18
Which of the following is NOT one of the user types supported in Nokia SR Linux?
- A. Regular Linux OS users
- B. Remote users
- C. SR Linux users
- D. Container users
正解:B
解説:
Nokia SR Linux supports SR Linux users, regular Linux OS users, and container users. "Remote users" is not a defined user type within SR Linux user management.
質問 # 19
A static route is configured in two steps in Nokia's SR Linux. Which of the following items CANNOT be configured in the static-routes container?
- A. IPv4 destination prefix
- B. blackhole
- C. Preference value
- D. Next-hop group
正解:B
解説:
The static-routes container in Nokia SR Linux does not support configuring a blackhole route directly; it is used to configure destination prefixes, preference values, and next-hop groups for static routing.
質問 # 20
Examine the exhibit. What type of information is NOT included in the IMET route advertised by VTEP1?
- A. Route distinguisher of VTEP1's MAC-VRF
- B. IP address of VTEP1
- C. VXLAN network identifier (VNI)
- D. Flooding list
正解:A
解説:
The IMET route includes the VNI, flooding list, and IP address of the originating VTEP, but it does not include the route distinguisher of the VTEP's MAC-VRF.
質問 # 21
Which of the following Nokia's SR Linux ACLs is instantiated on all line cards to copy incoming packets to the CPM?
- A. Egress ACL
- B. Capture-filter ACL
- C. CPM-filter ACL
- D. Ingress ACL
正解:C
解説:
The CPM-filter ACL is instantiated on all line cards in Nokia's SR Linux to copy incoming packets to the Control Plane Manager (CPM) for processing.
質問 # 22
How are LLDP frames advertised between two Nokia SR Linux routers?
- A. They are periodically flooded to the broadcast MAC address on each interface.
- B. They are routed to the destination node based on the IP VRF forwarding table.
- C. They are forwarded to the destination node based on the MAC VRF table.
- D. They are forwarded to the destination node based on the MAC VRF table.
正解:C
解説:
LLDP frames are periodically sent to a well-known multicast MAC address on each interface to discover directly connected devices.
質問 # 23
Which of the following is NOT one of the reasons why BGP is used as the routing protocol in the data center?
- A. It is more efficient than link-state protocols like IS-IS and OSPF.
- B. It supports both IPv4 and IPv6.
- C. BGP neighbors automatically discover each other.
- D. It is a well understood and mature routing protocol.
正解:A
解説:
BGP is not chosen because it is more efficient than link-state protocols; in fact, link-state protocols like IS-IS and OSPF generally provide faster convergence and more efficient route calculation. BGP is used in data centers mainly because it is mature, well understood, supports both IPv4 and IPv6, and offers flexible policy control.
質問 # 24
Based on the exhibit output, which of the following statements is TRUE?
- A. A cpm-filter policer is configured to rate limit ICMP packets, which are then captured in a log file.
- B. An ACL filter is configured to accept ICMP packets, which are then processed by the tcpdump-like utility.
- C. A cpm-filter is configured to accept ICMP packets, which are then captured in a log file.
- D. capture-filter is configured to copy ICMP packets to the CPM where they are processed by the tcpdump-like utility.
正解:D
解説:
The exhibit shows ICMP packets being captured and displayed by a tcpdump-like utility, which indicates that a capture-filter is configured to copy ICMP packets to the Control Plane Manager (CPM) where they are processed and monitored.
質問 # 25
Which of the following statements about the VXLAN tunneling in data centers is FALSE?
- A. Each VXLAN tunnel endpoint is automatically assigned with a unique VNI value.
- B. VLXAN tunneling is used to provide Layer 2 connectivity between workloads over a common underlay network.
- C. EVPN routes are exchanged between VXLAN tunnel endpoints.
- D. VXLAN tunnel endpoints can be on hypervisors, leaf routers, or datacenter gateways.
正解:A
解説:
VXLAN tunnel endpoints (VTEPs) are configured with VNI (VXLAN Network Identifier) values, but these VNIs are not automatically assigned; they must be explicitly configured to define Layer 2 segments.
質問 # 26
Which of the following statements about resilient ECMP load balancing is TRUE?
- A. Hash buckets are used to ensure that flows egressing the same interface on one router use different egress interfaces on downstream routers.
- B. When one of the next-hops fail, only flows currently egressing to that next-hop are impacted.
- C. A different hash seed is used on downstream routers to ensure that flows are randomly distributed across all eligible router interfaces.
- D. The hash value used to distribute traffic is calculated as a modulo function on specific fields of the packet header.
正解:B
解説:
In resilient ECMP load balancing, when a next-hop fails, only the flows that were using that specific next-hop are affected and need to be redistributed, minimizing disruption to other flows.
質問 # 27
Which of the following statements about SR Linux interfaces is FALSE?
- A. Network interfaces are associated with physical ports on the linecards.
- B. Layer 2 parameters such as MTU are configured at the SR Linux interface level while Layer 3 parameters are configured at the subinterface level.
- C. The loopback interface is a physical interface directly connected to another interface on the same chassis.
- D. Only one management interface is allowed.
正解:C
解説:
The loopback interface in SR Linux is a logical, virtual interface used for management and routing purposes; it is not a physical interface directly connected to another interface on the same chassis.
質問 # 28
Which of the following statements about Zero Touch Provisioning (ZTP) is FALSE?
- A. The ZTP process is managed by the ZTP application in Nokia SR Linux.
- B. ZTP allows a router to become operational in the network without any pre-provisioning.
- C. The ZTP process relies on a DHCP server for an IP address.
- D. The ZTP process downloads a provisioning script defined in the TLS profile.
正解:D
解説:
The ZTP process downloads a provisioning script typically from a defined URL or server, not from a TLS profile. The TLS profile is used for securing communications but does not define the provisioning script location.
質問 # 29
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