CIS-Discovery ServiceNow Practice Test Questions and Exam Dumps
Question no 1:
A Discovery Schedule is configured with a /24 subnet IP range and a Shazzam batch size of 5000. Given this information, How many times will a Shazzam probe be launched during the discovery process?
A. 1
B. 2
C. 5000
D. 254
Detailed Question:
In a network discovery setup, a Discovery Schedule is used to map out and identify devices on the network by scanning a specific range of IP addresses. In this scenario, the discovery is targeting a /24 subnet IP range, meaning the network contains 256 IP addresses (from 0 to 255). Additionally, the configuration includes a Shazzam batch size of 5000.
Key Concepts:
A /24 subnet refers to a subnet mask of 255.255.255.0, which defines a network with 256 IP addresses, including both the network and broadcast addresses.
The Shazzam batch size refers to how many IP addresses will be scanned in one batch. In this case, it is set to 5000, meaning each batch will process 5000 IPs.
A Shazzam probe is launched for each batch of IP addresses within the discovery range.
With a /24 subnet having 256 IP addresses, but a batch size of 5000, the question arises: how many Shazzam probes are required to cover this network range?
Answer: B. 2
Explanation:
In this scenario, the /24 subnet contains 256 total IP addresses. However, the Shazzam probe is configured to scan 5000 IP addresses per batch, which is larger than the total number of IP addresses in the /24 subnet.
The total number of IP addresses in the /24 subnet is 256. Since the batch size is set to 5000 IP addresses, it exceeds the total number of IPs in the subnet, meaning only two probes will be necessary to complete the discovery. Here's why:
First Shazzam Probe: The first probe will scan the first 256 IP addresses (the entire subnet).
Second Shazzam Probe: A second probe will be launched because the batch size is larger than the total IPs in the subnet. This second probe, however, will effectively be redundant as it will not have any additional IPs to scan. The second probe is launched just to fulfill the configured batch size, even though it won't find more devices.
Thus, only two Shazzam probes will be launched — one to scan all 256 IPs, and another to fulfill the batch size of 5000, even though there are no additional IP addresses to scan.
This is a simple case where the batch size exceeds the number of available IP addresses, and therefore, a second probe is required for completion.
Question no 2:
Which method does the Discovery process use to check if a Host IP is active or reachable?
A. Port Scan
B. Traceroute
C. Ping
D. Classification
Detailed Question:
In a network discovery process, it is essential to identify whether a specific host within a given network is active or reachable. This allows network administrators or discovery tools to determine which devices are available on the network for further scanning or management. There are various methods used in network discovery to check the status of a host, each with its advantages and use cases. One commonly used method for determining if a host IP address is active or alive is to check for a response from the host.
The question asks about the method that discovery tools typically use to check if a host is active or reachable on the network. Understanding this method is crucial for setting up accurate and efficient network discovery schedules.
Answer: C. Ping
Explanation:
The Ping method is widely used by network discovery tools to check if a host IP is active or reachable on the network. Ping works by sending an ICMP (Internet Control Message Protocol) Echo Request message to the target host. If the host is active, it will respond with an ICMP Echo Reply. This round-trip exchange of messages helps determine if the host is reachable, and this process can be completed quickly.
Why Ping is the Correct Answer:
Simplicity: The Ping command is simple and efficient. It sends a small packet of data to the target host and waits for a reply, making it a fast and effective way to check if a host is online.
Common Usage: It is one of the most common methods used in network tools to check the availability of devices within a network range.
Low Overhead: Unlike methods such as port scanning or traceroute, ping has minimal network traffic overhead, which is why it is often the first method employed in network discovery.
Why Other Options are Incorrect:
A. Port Scan: A port scan is used to identify open ports on a host, not to check if the host is alive. While port scanning can indirectly confirm if a host is active based on open ports, it is more complex and resource-intensive than a simple Ping.
B. Traceroute: Traceroute is used to identify the path packets take through the network, not for determining if a specific host is alive. It provides details about the route, including intermediate routers, but does not directly confirm host availability.
D. Classification: Classification typically refers to identifying or categorizing devices based on their type, operating system, or role within the network. It doesn't directly check for host activity.
In conclusion, Ping is the most efficient and widely used method to determine if a host IP is active or reachable, making it the correct choice for network discovery.
Question no 3:
Which of the following types of storage devices are typically discovered and mapped for dependencies in a network discovery process? (Choose three.)
A. Direct-attached storage (DAS)
B. Network-attached storage (NAS)
C. Storage area network (SAN)
D. Multiple area network (MAN)
E. Redundant Array of Independent Disks (RAID)
Detailed Question:
In network discovery, mapping and identifying dependencies of various devices and technologies are critical for maintaining an efficient and well-managed IT infrastructure. During this process, discovery tools are capable of scanning the network to identify and classify different types of devices, including storage devices. Storage plays a crucial role in modern IT environments, and understanding the dependencies between storage systems and the rest of the network is essential for performance, fault tolerance, and overall management.
The discovery tool identifies and maps dependencies for a variety of storage devices, which can range from local storage connected directly to a server to more complex systems involving distributed storage across a network. This ensures that network administrators can properly monitor and manage these devices to optimize performance and troubleshoot issues effectively.
The question asks which types of storage devices discovery tools can typically find and map dependencies for, helping to understand the most relevant storage technologies in a network discovery process.
Answer:
A. Direct-attached storage (DAS)
B. Network-attached storage (NAS)
C. Storage area network (SAN)
Explanation:
The discovery process is capable of identifying and mapping dependencies for the following types of storage devices:
A. Direct-attached storage (DAS):
Direct-attached storage (DAS) refers to storage devices that are directly connected to a server or computer without a network in between, such as hard drives or solid-state drives (SSDs). While DAS is physically attached to a single server or machine, discovery tools can identify the storage device and map its dependencies within the server or device configuration.B. Network-attached storage (NAS):
Network-attached storage (NAS) devices are storage systems connected to a network, allowing multiple devices to access the storage. NAS is typically used for file sharing and storing data accessible by various systems over the network. Discovery tools can identify NAS devices on the network and map their dependencies, such as connected clients or servers accessing data.C. Storage area network (SAN):
A storage area network (SAN) is a high-speed network that provides block-level storage access to multiple servers. SANs are used in enterprise environments to consolidate storage resources. Discovery tools are capable of identifying SAN devices, mapping their interconnections with servers, and understanding the dependencies across the storage network.
Why Other Options are Incorrect:
D. Multiple area network (MAN):
A MAN (Metropolitan Area Network) is not a storage device. It refers to a type of network that spans a city or large geographic area, typically used for communication purposes between different LANs. MANs are not storage devices and are not mapped for storage dependencies in a discovery process.E. Redundant Array of Independent Disks (RAID):
A RAID is a data storage virtualization technology that combines multiple physical disk drives into one or more logical units for redundancy, performance, or both. RAID itself is a configuration or technology used within DAS, NAS, or SAN devices. Discovery tools typically map the underlying storage system (DAS, NAS, or SAN) rather than the RAID configuration specifically. Therefore, RAID configurations are not usually mapped directly by discovery tools, although they can be a part of the mapped storage system.
In conclusion, DAS, NAS, and SAN are the storage devices most commonly discovered and mapped for dependencies during the network discovery process, while RAID and MAN are outside the scope of typical storage device discovery.
Question no 4:
Which option allows the following functionality: If the value is set to 1000 and a discovery process needs to scan 10,000 IP addresses using a single MID Server, it will create 10 Shazzam probes, each scanning 1000 IP addresses?
A. MID Server Clusters
B. MID Server selection method
C. Shazzam Batch Size
D. Behaviors
Detailed Question:
When performing network discovery in environments with a large number of IP addresses to scan, efficiency and scalability are critical considerations. In order to effectively manage large-scale discovery processes, configuration settings like batch sizes play an important role in determining how the discovery tool splits the workload into manageable units.
The question describes a scenario in which a discovery process must scan 10,000 IP addresses using a single MID Server. The goal is for the discovery tool to split this task into 10 Shazzam probes, each scanning 1000 IP addresses. This division of labor is important for ensuring that the discovery process runs efficiently, without overloading the MID Server and ensuring that each segment of the IP range is scanned independently and effectively.
In this case, the relevant configuration setting is the one that controls how the IP address range is split up for scanning. The tool uses this setting to create multiple Shazzam probes for parallel processing. By specifying a batch size of 1000 IP addresses, the system can divide the task into 10 smaller probes, improving both performance and management of the discovery process.
Answer: C. Shazzam Batch Size
Explanation:
The Shazzam Batch Size is the setting that determines how many IP addresses are included in each Shazzam probe during the discovery process. This setting is crucial for managing the size of the IP address ranges being scanned by the MID Server. When you set the Shazzam Batch Size to 1000, the discovery process divides the total number of IP addresses to be scanned into smaller chunks, with each chunk containing 1000 IP addresses.
In this specific scenario, if you have 10,000 IP addresses to scan, the discovery tool will create 10 separate Shazzam probes, each handling 1000 IP addresses. This allows for parallel processing of the IP address range, enabling more efficient discovery and reducing the load on the MID Server.
Why Other Options Are Incorrect:
A. MID Server Clusters:
MID Server Clusters refer to a group of MID Servers that work together to provide failover and load balancing. While clusters help improve the scalability and availability of the discovery process, they do not directly control how IP address ranges are divided into smaller tasks. In this scenario, the splitting of IP addresses into probes is controlled by the Shazzam Batch Size, not the MID Server cluster configuration.B. MID Server selection method:
The MID Server selection method defines how the discovery tool selects a MID Server from available options. It determines which MID Server will be used for a discovery, but it does not influence the division of IP address ranges into smaller probes. The selection method only impacts the assignment of discovery tasks to specific MID Servers.D. Behaviors:
Behaviors in discovery typically refer to various settings or rules that guide how the discovery process operates, such as retry attempts or how to handle different device types. While behaviors are important for discovery processes, they do not directly control how the IP addresses are batched into Shazzam probes.
In conclusion, the Shazzam Batch Size setting is the correct choice because it determines how the discovery tool breaks down a large range of IP addresses into smaller, manageable probes for efficient scanning.
Question no 5:
Which option best describes how to use a Behavior in the context of network discovery?
A. The MID Server selection method on a Discovery Schedule
B. The Behavior drop-down menu on a Discovery IP Range
C. The Behavior drop-down menu on a Discovery Status
D. The Behavior checkbox on a Configuration Item (CI)
Detailed Question:
In the context of network discovery, Behaviors are configurations used to control how the discovery process interacts with specific devices, IP ranges, or configurations. These settings can be used to adjust various aspects of how discovery tasks are performed, such as retry attempts, discovery timeouts, or specific actions to take when encountering certain types of devices.
The question asks which of the options best describes how Behaviors are used within the discovery process. The concept of Behaviors is central to the flexibility and customization of discovery tasks, enabling administrators to fine-tune discovery schedules and optimize the discovery process according to specific requirements.
Each of the listed options refers to different aspects of discovery. Understanding how Behaviors are applied allows users to better manage their network discovery, ensuring that scans are executed in a manner that is appropriate for the types of devices and networks being discovered.
Answer: B. The Behavior drop-down menu on a Discovery IP Range
Explanation:
The Behavior drop-down menu on a Discovery IP Range allows network administrators to select specific behaviors for a given range of IP addresses during the discovery process. By selecting a behavior, you can customize how the discovery process operates within that particular IP range. For example, behaviors can define how aggressively the discovery tool attempts to detect devices, how many retry attempts are made when a device is unreachable, or how long the tool should wait before considering a device as unavailable.
Why the Other Options Are Incorrect:
A. The MID Server selection method on a Discovery Schedule:
This option refers to how the MID Server is selected to run the discovery based on scheduling criteria, not how behaviors are applied during the discovery process. The MID Server selection method is part of scheduling and does not directly influence how discovery behaviors are configured or applied.C. The Behavior drop-down menu on a Discovery Status:
Discovery Status refers to the overall status of a discovery job (whether it is active, completed, or failed), but this is not where you configure or apply discovery behaviors. The Behavior settings are tied to the IP range being scanned, not to the status of the discovery itself.D. The Behavior checkbox on a Configuration Item (CI):
Configuration Items (CIs) represent the devices or objects being discovered. While CIs are essential in understanding what is being discovered, behaviors are applied to the Discovery IP Range to modify how the discovery process works for specific ranges of IPs, not on the individual configuration items themselves.
Summary:
The Behavior drop-down menu on a Discovery IP Range allows you to define and customize the behavior of the discovery process for specific IP address ranges, making it the best option for applying discovery behaviors. This functionality is crucial for adapting the discovery process to the specific needs of the network being scanned, providing flexibility in how devices are discovered.
Question no 6:
Which of the following pattern operations are used to query targets? (Choose two.)
A. WMI Query
B. Merge Table
C. Get Process
D. Parse Variable
Detailed Question:
In network discovery and IT automation, pattern operations are essential components used to interact with and gather information from devices, applications, or systems. These operations enable automation platforms (like ServiceNow or other IT management tools) to query, retrieve, and process data from various targets across a network.
The question focuses on pattern operations and asks which ones are specifically used to query targets—i.e., retrieve information from devices, servers, or systems in the network. A pattern operation that queries a target typically involves sending requests to a system, such as querying system data or retrieving configuration details from a machine or device.
Understanding the function of each option helps in determining which are related to querying targets and which perform other actions (such as data parsing or merging).
Answer:
A. WMI Query
C. Get Process
Explanation:
A. WMI Query:
WMI (Windows Management Instrumentation) queries are used to interact with and retrieve data from Windows-based systems. A WMI query targets a Windows machine to gather system information, such as hardware details, software installations, running services, and more. WMI allows administrators or automation platforms to query Windows devices for valuable configuration and status information.
Example: A WMI query might be used to retrieve information about a computer's CPU usage or disk space by querying the Win32_OperatingSystem class on a target machine.
C. Get Process:
The Get Process operation is used to query and retrieve information about running processes on a target system. This operation is useful in automation and monitoring to check the processes that are currently running on a machine. It allows systems to query a remote machine and gather real-time data about process performance or statuses.
Example: A Get Process operation could be used to retrieve a list of processes running on a server, check their resource usage, or detect any unusual behavior like high CPU consumption from a specific process.
Why Other Options Are Incorrect:
B. Merge Table:
The Merge Table operation is used to combine data from different sources into a single dataset for further processing or analysis. This operation does not query targets; rather, it is used to manipulate or merge existing data. It is more about structuring the data once it has already been collected, not querying systems for data.
D. Parse Variable:
Parse Variable is used to process or extract specific values from a variable (e.g., text or data stored in a variable). It does not involve querying a target system but rather parsing or extracting values from existing data. It's a data manipulation operation, not a querying one.
Summary:
The operations that specifically query targets for information are WMI Query and Get Process. WMI Query retrieves system data from Windows machines, while Get Process queries a system for information about running processes. Both are designed to interact with devices or systems to gather real-time data.
