Juniper JN0-104 Junos, Associate (JNCIA-Junos) Online Training
Juniper JN0-104 Online Training
The questions for JN0-104 were last updated at Dec 26,2024.
- Exam Code: JN0-104
- Exam Name: Junos, Associate (JNCIA-Junos)
- Certification Provider: Juniper
- Latest update: Dec 26,2024
Question #31
Which two operating systems are used as the foundation of the Junos OS? (Choose two.)
- A . Ubuntu
- B . CentOS
- C . Linux
- D . FreeBSD
Correct Answer: CD
Question #32
What does the commit check command do?
- A . It validates the syntax of a candidate configuration without actually committing the configuration.
- B . It commits the configuration when a validation check succeeds.
- C . It schedules the commit to a future time.
- D . It adds a comment to the messages log.
Correct Answer: A
A
Explanation:
The commit check command allows you to validate the syntax of a candidate configuration without actually committing the configuration. This is useful for validating the syntax of a configuration before committing it to ensure that the configuration can be applied without any errors. According to the Juniper Networks JNCIA-Junos study guide, the commit check command validates the syntax of a candidate configuration without actually committing the configuration.
A
Explanation:
The commit check command allows you to validate the syntax of a candidate configuration without actually committing the configuration. This is useful for validating the syntax of a configuration before committing it to ensure that the configuration can be applied without any errors. According to the Juniper Networks JNCIA-Junos study guide, the commit check command validates the syntax of a candidate configuration without actually committing the configuration.
Question #33
Click the Exhibit button.
Referring to the exhibit, a firewall filter is configured and applied to the ge-0/0/1 interface.
In this scenario, which statement is correct?
- A . All traffic to destination 10.10.10.0/24 is accepted.
- B . All traffic entering on interface ge-0/0/1 is discarded.
- C . All traffic entering on interface ge-0/0/1 is accepted.
- D . All traffic from source 10.10.10.0/24 is accepted.
Correct Answer: D
D
Explanation:
if term has no "then" configured, matched packets are accepted by default
https://www.juniper.net/documentation/us/en/software/junos/routing-policy/topics/concept/firewall-filter-ex-series-evaluation-understanding.html
Additionaly:
if term has no "from" configured, every packet is matched to term
if packet does not match any term – default term (implicit discard) is used
D
Explanation:
if term has no "then" configured, matched packets are accepted by default
https://www.juniper.net/documentation/us/en/software/junos/routing-policy/topics/concept/firewall-filter-ex-series-evaluation-understanding.html
Additionaly:
if term has no "from" configured, every packet is matched to term
if packet does not match any term – default term (implicit discard) is used
Question #34
You loaded the factory-default configuration on your Junos device.
Which single element must be configured before a commit command will succeed?
- A . An IPv4 address must be configured on the fxpO or emO interface.
- B . An IPv4 default route must be configured.
- C . A hostname must be configured.
- D . A root password must be configured.
Correct Answer: D
D
Explanation:
Ref: Root Password | Junos OS | Juniper Networks
“Root Password
…
When the device is powered on for the first time, it is ready to be configured. Initially, you log in as the user root with no password. You must configure a plain-text password for the root-level user (whose username is root) the first time you modify and commit the configuration.
…”
D
Explanation:
Ref: Root Password | Junos OS | Juniper Networks
“Root Password
…
When the device is powered on for the first time, it is ready to be configured. Initially, you log in as the user root with no password. You must configure a plain-text password for the root-level user (whose username is root) the first time you modify and commit the configuration.
…”
Question #35
Which Junos OS routing instance type is used for non-VPN-related applications such as system virtualization?
- A . vpls
- B . forwarding
- C . virtual-router
- D . vrf
Correct Answer: C
Question #36
Which two statements describe the functions of the Routing Engine (RE)? (Choose two.)
- A . The RE will apply filters and routing policies when forwarding the packets to their final destination.
- B . The RE will calculate the best network path to each individual subnet based on input from various routing protocols and static routes.
- C . The RE will route or switch packets or frames out of the correct interface as quickly as possible.
- D . The RE will process management traffic to help monitor and manage the network device.
Correct Answer: BD
Question #37
When you choose to read your e-mail using an e-mail client, your e-mail client interacts with which OSI layer?
- A . presentation
- B . transport
- C . application
- D . session
Correct Answer: C
C
Explanation:
According to the OSI (Open Systems Interconnection) model, the application layer is responsible for providing the user with a means to access the network services, such as e-mail, file transfer, and virtual terminal access. An e-mail client, such as Microsoft Outlook or Apple Mail, operates at the application layer and interacts with the underlying network services to retrieve and manage e-mail messages.
Reference: Juniper Networks JNCIA-Junos Study Guide, Section 2.2 "The OSI Model"
C
Explanation:
According to the OSI (Open Systems Interconnection) model, the application layer is responsible for providing the user with a means to access the network services, such as e-mail, file transfer, and virtual terminal access. An e-mail client, such as Microsoft Outlook or Apple Mail, operates at the application layer and interacts with the underlying network services to retrieve and manage e-mail messages.
Reference: Juniper Networks JNCIA-Junos Study Guide, Section 2.2 "The OSI Model"
Question #38
What information is provided by the help topic interface? command?
- A . It displays the administration manual for the interface command.
- B . It displays usage examples for the top-ten interface commands.
- C . It displays the available options and a brief description of usage guidelines.
- D . It displays the best options to use with the interface command regarding your current configuration.
Correct Answer: C
Question #39
What is a function of the PFE?
- A . to generate protocol control traffic
- B . to monitor chassis components
- C . to apply stateless firewall filters
- D . to generate forwarding tables
Correct Answer: C
Question #40
What are two benefits of a modular operating system? (Choose two.)
- A . A malfunction in one module causes a full system shutdown.
- B . Each module runs in its own protected memory space.
- C . It enables the independent restart of each module as necessary.
- D . It enables CPU scheduling strictly using kernel system calls.
Correct Answer: BC
BC
Explanation:
Ref: Junos OS Overview | Junos OS | Juniper Networks
“Junos OS Overview
…
Modular Software Architecture
Although individual architecture modules of Junos OS communicate through well-defined interfaces, each module runs in its own protected memory space, preventing one module from disrupting another. It also enables the independent restart of each module as necessary.
…”
BC
Explanation:
Ref: Junos OS Overview | Junos OS | Juniper Networks
“Junos OS Overview
…
Modular Software Architecture
Although individual architecture modules of Junos OS communicate through well-defined interfaces, each module runs in its own protected memory space, preventing one module from disrupting another. It also enables the independent restart of each module as necessary.
…”
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