JN0-105 Practice Exam Free – 50 Questions to Simulate the Real Exam
Are you getting ready for the JN0-105 certification? Take your preparation to the next level with our JN0-105 Practice Exam Free – a carefully designed set of 50 realistic exam-style questions to help you evaluate your knowledge and boost your confidence.
Using a JN0-105 practice exam free is one of the best ways to:
- Experience the format and difficulty of the real exam
- Identify your strengths and focus on weak areas
- Improve your test-taking speed and accuracy
Below, you will find 50 realistic JN0-105 practice exam free questions covering key exam topics. Each question reflects the structure and challenge of the actual exam.
Which process in the Junos OS is responsible for maintaining routing protocols and tables?
A. mgd
B. chassisd
C. dcd
D. rpd
Which two addresses are included in an Ethernet frame header? (Choose two.)
A. destination MAC address
B. source IP address
C. destination IP address
D. source MAC address
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.
What information would you find using the CLI help command?
A. message of the day
B. an explanation for specific system log error messages
C. hyperlinks for remediation actions
D. a URL for accessing the technical documentation
You have logged on to a Junos device and are at the operational mode prompt. Which two commands are used at this prompt? (Choose two.)
A. show interface ge-0/0/0
B. request system shutdown
C. set interface ge-0/0/0 unit 0 family inet
D. run show interface terse
What are two examples of exception traffic? (Choose two.)
A. ping to the local device
B. log messages
C. transit packets
D. routing updates
Which two statements are true about the Junos OS? (Choose two.)
A. Routing tables are stored in the control plane.
B. Routing tables are stored in the forwarding plane.
C. Exception traffic is never sent to the control plane.
D. Exception traffic is sent to the control plane.
Which component is considered part of the data plane?
A. the Packet Forwarding Engine
B. the fan tray
C. the power supply
D. the Routing Engine
How many login classes are assignable to a user account?
A. 2
B. 1
C. 4
D. 3
Which two statements are true about the PFE? (Choose two.)
A. The PFE handles all processes that control the chassis components.
B. The PFE is responsible for performing protocol updates and system management.
C. The PFE uses Layer 2 and Layer 3 forwarding tables to forward traffic toward its destination.
D. The PFE implements various services such as policing, stateless firewall filtering, and class of service.
What is a benefit of using J-Web?
A. It simultaneously manages multiple devices.
B. It provides more advanced features than the CLI.
C. It provides a customizable dashboard.
D. It provides console-based management.
You issue the monitor traffic interface ge-0/0/0 command. What will this command accomplish?
A. It displays a packet capture on interface ge-0/0/0.
B. It displays the MTU and MAC address for ge-0/0/0.
C. It displays real-time statistics for interface ge-0/0/0.
D. It displays an operational summary of ge-0/0/0.
Which two statements apply to the Routing Engine functions? (Choose two.)
A. It does not process routing updates.
B. It responds to ping and traceroute commands.
C. It maintains the routing tables.
D. It processes the transit traffic.
When considering routing policies, which two statements are correct? (Choose two.)
A. An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base.
B. Policy terms are evaluated from top to bottom with action taken on the first match found.
C. Policy terms are evaluated from top to bottom with the most restrictive action taken of all the matching terms.
D. Routing policies are applied to interfaces as input or export filters.
What is the protocol data unit (PDU) of the Data Link Layer?
A. segment
B. byte
C. bit
D. frame
Which two components are included in a transport header? (Choose two.)
A. source port number
B. source MAC address
C. destination MAC address
D. destination port number
You received a new Junos device and are configuring the system-related settings. You must configure this device for the current date and time on the US West coast. You have set the time zone to America/Los_Angeles, however the time and date did not change. In this scenario, which two additional actions would satisfy this requirement? (Choose two.)
A. Configure an NTP server.
B. Set the date and time setting manually.
C. Reboot the device.
D. Configure a DNS server.
You have just increased the MTU size of interface ge-0/0/0 and committed the configuration. Which command would help you identify the applied MTU change?
A. monitor traffic interface ge-0/0/0
B. show interfaces ge-0/0/0
C. show interfaces ge-0/0/0 terse
D. monitor interface ge-0/0/0
Click the Exhibit button.You need to configure interface ge-0/1/2 with an IP address of 172.16.100.1/24. You have accidentally entered 172.16.101.1/24 as shown in the exhibit. Which command should you issue to solve the problem?
A. [edit]user@router# rollback rescue
B. [edit]user@router# rollback 1
C. [edit]user@router# rollback 0
D. [edit]user@router# rollback 2
Which character is used to filter the command output in the Junos CLI?
A. ?
B.
Which two fields are you required to enter when you create a new user account? (Choose two.)
A. login class
B. username
C. user ID
D. full name
You have configured some interfaces on a Junos device; however, you have not yet committed the configuration. What happens if you issue the rollback 0 command in this scenario?
A. The messages.log file is deleted.
B. The interface changes you made are discarded.
C. The factory default configuration is loaded.
D. The Junos device is rebooted.
Which two actions happen when multiple users issue the configure exclusive command to enter configuration mode on a Junos device? (Choose two.)
A. Other users can enter configuration mode.
B. The candidate configuration is locked.
C. Other users cannot enter configuration mode.
D. The candidate configuration is unlocked.
You are asked to convert the number 7 from decimal to binary. Which number is correct in this scenario?
A. 00010000
B. 11100000
C. 00000111
D. 00001000
Which two statements are correct about firewall filters? (Choose two.)
A. “Discard” is the default action of packets that are not explicitly allowed.
B. There can be only one firewall filter.
C. There can be multiple firewall filters.
D. “Accept” is the default action of packets that are not explicitly allowed.
Which two statements are correct about Junos traceoptions? (Choose two.)
A. Traceoption output, by default, is stored in /var/log/.
B. Traceoptions cannot be enabled in a production environment.
C. Traceoptions are enabled by default.
D. Traceoptions are enabled through configuration.
What are two functions of the routing protocol daemon (rpd)? (Choose two.)
A. It creates forwarding tables.
B. It provides access to the CLI.
C. It maintains routing tables.
D. It generates chassis alarms.
Click the Exhibit button.Referring to the exhibit, which routing configuration is required for these two users to access the remote server?
A. Users and the server require a default gateway.
B. Trunk ports must be enabled on the switch.
C. A routing protocol must be enabled on the router.
D. Users must connect directly to the router.
Click the Exhibit button. Referring to the exhibit, OSPF has three export policies that match different static route prefixes. The 10.10.10.0/24 static route does not match any terms in the policy1 routing policy. What happens next in this scenario?
A. The static route is rejected by the default routing policy.
B. The static route is rejected by the policy1 routing policy.
C. The static route is evaluated by the policy2 routing policy.
D. The static route is evaluated by the policy3 routing policy.
Which command modifier would you use to see all possible completions for a specific command?
A. |
B. detail
C. ?
D. extensive
What are two advantages of using the Junos OS? (Choose two.)
A. It enables you to roll back to a previous configuration.
B. It supports up to a maximum of two previous configurations.
C. It pushes your configuration changes “live” immediately.
D. It is modular.
What information does the forwarding table require so that the device forwards traffic? (Choose three.)
A. BGP local preference value
B. next hop IP address
C. outgoing interface name
D. OSPF metric value
E. next hop MAC address
Which protocol is responsible for learning an IPv4 neighbor's MAC address?
A. Neighbor Discovery Protocol (NDP)
B. Address Resolution Protocol (ARP)
C. Media Access Control Security (MACsec)
D. Network Address Translation (NAT)
Your router has a route to the 10.1.1.0/24 network with a next hop of rjct. In this scenario, which action will your router perform when traffic destined to the 10.1.1.0/24 network is received?
A. The traffic will be discarded and an ICMP unreachable message will be sent to the destination of the traffic.
B. The traffic will be silently discarded.
C. The traffic will be redirected using a default route.
D. The traffic will be discarded and an ICMP unreachable message will be sent to the source of the traffic.
Which two statements are correct about a Routing Engine? (Choose two.)
A. It processes CoS marked traffic.
B. It processes management traffic.
C. It maintains routing tables.
D. It forwards transit traffic.
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. NAT
B. IPv6
C. CoS
D. STP
Which two statements about route preference in Junos are correct? (Choose two.)
A. Both direct and static routes have the same preference.
B. Both direct and local routes have the same preference.
C. Both OSPF internal and OSPF AS external routes have the same preference.
D. Both EBGP and IBGP routes have the same preference.
Which service does RADIUS provide?
A. routing
B. authentication
C. DNS resolution
D. time synchronization
Click the Exhibit button. Referring to the exhibit, what is the source IP address of the ping that was executed?
A. 10.23.0.2
B. 10.23.0.3
C. 10.12.0.2
D. 10.24.0.4
Which two common routing policy actions affect the flow of policy evaluation? (Choose two.)
A. next term
B. next hop
C. next policy
D. community
You configured your system authentication order using the set authentication-order tacplus radius password command. Which statement is correct in this scenario?
A. A rejection by TACACS+ will prevent a login and bypass the other two authentication methods.
B. The password authentication will only be used if the TACACS+ and RADIUS servers fail to respond.
C. All authentication methods are used with the most restrictive permission set used.
D. The password authentication method is evaluated if the TACACS+ and RADIUS servers respond with a reject message.
How many rescue configuration files are supported on a Junos device?
A. 3
B. 1
C. 50
D. 49
Which process in the Junos OS is responsible for device management tasks including the CLI and commit operations?
A. mgd
B. chassisd
C. dcd
D. rpd
Which two statements are correct about the employee@R1> prompt? (Choose two.)
A. You are at a shell prompt.
B. You are in configuration mode.
C. R1 is the hostname of your device.
D. You are in operational mode.
You are trying to diagnose packet loss at interface ge-0/0/3. In this scenario, which command would help you view error statistics in real time?
A. monitor interface ge-0/0/3
B. show interface ge-0/0/3
C. show interface terse
D. monitor interface traffic
You want to find out the chassis serial number of a Junos device. Which command would display this information?
A. show chassis environment
B. show chassis location
C. show chassis routing-engine
D. show chassis hardware
Click the Exhibit button. You are unable to remotely access your Juniper device using the CLI. Referring to the exhibit, which command would you add to the existing configuration to enable remote CLI access?
A. set system services ssh
B. load factory-default
C. set system login idle-timeout 20
D. set system root-authentication plain-text-password
Which two functions are performed by the PFE? (Choose two.)
A. It forwards transit traffic.
B. It maintains the routing table.
C. It selects active routes.
D. It implements firewall filters.
Which Junos feature limits the amount of exception traffic that is sent from the PFE to the RE?
A. policer
B. CoS markings
C. routing policy
D. scheduler
Click the Exhibit button. Referring to the exhibit, which route(s) will be selected by Junos for packet forwarding?
A. The static route will be selected.
B. The OSPF route will be selected.
C. The Junos OS randomly selects one route.
D. The Junos OS selects both routes.
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