Juniper JN0-335 Security, Specialist Exam Practice Test

Answer : B

The logging parameter that will provide the function of showing tabular data for operational mode commands is count. The count parameter displays the number of packets and bytes that match a security policy and the action taken by the policy. The count parameter can be used with the show security policies hit-count command to display the policy counters in a tabular format. The count parameter can also be used with the show security flow session command to display the session counters in a tabular format.Reference:=show security policies hit-count,show security flow session

Answer : C

The sequence that an SRX Series device uses when implementing stateful session security policies using Layer 3 routes is:

An SRX Series device will conduct a longest-match Layer 3 route table lookup before performing a security policy search: When an SRX Series device receives a packet, it first looks up the destination IP address in the routing table and finds the longest matching route to forward the packet. Then, it performs a security policy search based on the source zone, destination zone, source address, destination address, protocol, and application of the packet. If there is a matching policy that allows the packet, it creates or updates a session entry for the packet and applies any security services configured in the policy.

Answer : A, D

Application identification is a feature that enables SRX Series devices to identify and classify network traffic based on application signatures or custom rules. Application identification can enhance security, visibility, and control over network applications. Two statements that are true about application identification are:

Application identification can identify nested applications that are within Layer 7: Nested applications are applications that run within another application protocol, such as HTTP or SSL. For example, Facebook or YouTube are nested applications within HTTP. Application identification can identify nested applications by inspecting the application payload and matching it against predefined or custom signatures.

Application signatures are not the same as IDP signatures: Application signatures are patterns of bytes or strings that uniquely identify an application protocol or a nested application. IDP signatures are patterns of bytes or strings that indicate an attack or an exploit against a vulnerability. Application signatures are used for application identification and classification, while IDP signatures are used for intrusion detection and prevention.

Answer : A, B

The fab interface is a fabric link that connects the two nodes in a chassis cluster. A chassis cluster is a high-availability feature that groups two identical SRX Series devices into a cluster that acts as a single device. The fab interface has two functions:

Real-time objects (RTOs) are exchanged on the fab interface to maintain session synchronization: RTOs are data structures that store information about active sessions, such as source and destination IP addresses, ports, protocols, and security policies. RTOs are exchanged between the nodes on the fab interface to ensure that both nodes have the same session information and can take over the traffic in case of a failover.

In an active/active configuration, inter-chassis transit traffic is sent over the fab interface: In an active/active configuration, both nodes in a cluster can process traffic for different redundancy groups (RGs). RGs are collections of interfaces or services that fail over together from one node to another. If traffic needs to transit from one RG to another RG that is active on a different node, it is sent over the fab interface.

Answer : B, D

Two statements that are true about Juniper ATP Cloud are:

Juniper ATP Cloud uses multiple antivirus software packages to analyze files: Juniper ATP Cloud is a cloud-based service that provides advanced threat prevention and detection for your network. It integrates with SRX Series firewalls and MX Series routers to analyze files and network traffic for signs of malicious activity. Juniper ATP Cloud uses multiple antivirus software packages from different vendors to scan files for known malware signatures and provide a comprehensive verdict based on their results.

Juniper ATP Cloud does not use antivirus software packages to protect against zero-day threats: Juniper ATP Cloud protects against zero-day threats by using dynamic analysis, not antivirus software packages. Dynamic analysis is a method of executing files in a sandbox environment and observing their behavior and network interactions. Dynamic analysis can uncover unknown malware that may evade static analysis or signature-based detection methods.

Answer : D

Answer : A, C

Scalability: vSRX instances can be easily added or removed as the needs of the network change, making it a flexible option for scaling in a software-defined network.

Granular Security: vSRX allows for granular security policies to be enforced at the virtual interface level, making it an effective solution for securing traffic in a software-defined network.

The two benefits of using a vSRX in a software-defined network are scalability and granular security. Scalability allows you to increase the number of resources available to meet the demands of network traffic, while granular security provides a level of control and flexibility to your network security that is not possible with a traditional firewall. With a vSRX, you can create multiple levels of security policies, rules, and access control lists to ensure that only authorized traffic can enter and exit your network. Additionally, you would not require a software license to use the vSRX, making it an economical solution for those looking for increased security and flexibility.