ServiceNow CIS-Discovery Exam Dumps & Practice Test Questions
Question 1:
Given a Discovery Schedule configured with a /24 subnet range and a Shazzam batch size of 5000, how many Shazzam probes will be initiated during the discovery process?
A. Just 1
B. 2 probes
C. 5000 probes
D. 254 probes
Answer: D
Explanation:
In this scenario, the /24 subnet range means that there are 256 IP addresses available in the subnet (from 0 to 255, though the first and last addresses are typically reserved for network and broadcast addresses). The Shazzam batch size is set to 5000, which refers to how many individual probes can be initiated during the discovery process at a time.
However, since the /24 subnet has a total of only 254 usable IP addresses (excluding the network and broadcast addresses), the discovery process will attempt to probe all 254 addresses. Even though the batch size is set to 5000, this value is not directly relevant because the actual number of probes is limited by the number of usable IP addresses in the /24 subnet.
Therefore, the system will initiate 254 probes to cover all the usable IP addresses in the /24 subnet range.
Thus, the correct answer is D, as it represents the total number of usable IP addresses that will be probed.
Question 2:
Which technique is employed during the Discovery process to determine if a Host IP is active or reachable?
A. Performing a Port Scan
B. Conducting a Traceroute
C. Sending a Ping request
D. Running a Classification check
Answer: C
Explanation:
The technique commonly used to determine if a Host IP is active or reachable during the Discovery process is sending a Ping request. A Ping request (which uses the ICMP protocol) is a simple method of checking if a device is responding to network traffic. When a Ping request is sent to a specific IP address, the target device will reply with a Ping response if it is active and reachable, allowing the discovery process to confirm that the device is online.
A Port Scan (A) is used to check for open ports on a specific host to determine the services running on that host, but it is not the primary method for determining if the host is active or reachable in the context of the discovery process.
Traceroute (B) is used to trace the path that network traffic takes to reach a destination, showing intermediate hops along the way, but it does not directly confirm whether the host is active or reachable in the same straightforward manner as a Ping request.
Running a Classification check (D) involves identifying and categorizing a host based on certain characteristics, but it’s not used as a basic method for determining whether a host IP is active or reachable.
Therefore, the correct answer is C, as sending a Ping request is the most commonly used method for checking the activity and reachability of a host during the discovery process.
Question 3:
Which of these storage devices are typically identified and mapped for network dependencies during the 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)
Answer: B, C, E
Explanation:
During the discovery process, network dependencies are mapped for devices that are part of the network infrastructure and directly affect the network's storage and data accessibility. Here's a breakdown of each option:
Network-Attached Storage (NAS) (B) is a storage device that connects to a network, allowing multiple users or devices to access and share data over the network. Since NAS devices are accessed via the network, they are commonly identified and mapped for network dependencies during the discovery process.
Storage Area Network (SAN) (C) is a specialized high-speed network that provides block-level storage to connected devices. SANs are typically used in enterprise environments where high-performance, large-scale storage is necessary. Since SANs involve network connectivity for storage access, they are also identified and mapped for network dependencies during discovery.
Redundant Array of Independent Disks (RAID) (E) refers to a data storage virtualization technology that combines multiple physical disk drives into one or more logical units for redundancy, performance improvement, or both. RAID configurations can be part of networked storage systems (like NAS or SAN), and even if RAID itself isn't a standalone network device, it’s part of the storage systems that need to be mapped during the discovery process.
Direct-Attached Storage (DAS) (A) refers to storage that is directly attached to a single device, such as a computer or server, and is not accessible over the network. DAS is not typically mapped for network dependencies during the discovery process because it doesn't involve network connectivity.
Multiple Area Network (MAN) (D) refers to a type of network that spans a larger geographic area than a Local Area Network (LAN) but smaller than a Wide Area Network (WAN). MAN is unrelated to storage devices and, therefore, isn't relevant to storage device identification and mapping for network dependencies.
In summary, NAS, SAN, and RAID are typically identified and mapped for network dependencies during the discovery process because they involve networked or virtualized storage systems that require tracking for network management and connectivity.
Question 4:
Which configuration allows this scenario: If the value is set to 1000 and the discovery process has to scan 10,000 IP addresses using a single MID Server, it will trigger 10 Shazzam probes, each scanning 1000 IPs?
A. MID Server Cluster configuration
B. MID Server selection method
C. Shazzam Batch Size
D. Discovery Behaviors
Answer: C
Explanation:
The correct configuration in this scenario is the Shazzam Batch Size (C).
Shazzam Batch Size determines the number of IP addresses that each Shazzam probe will scan during the discovery process. In this scenario, the batch size is set to 1000, meaning that each Shazzam probe will handle 1000 IP addresses. Since there are 10,000 IP addresses to scan and each probe can scan 1000 IP addresses, the discovery process will trigger 10 Shazzam probes to scan the full range of IP addresses.
Here's a breakdown:
Shazzam Batch Size (C) is the configuration setting that divides the total number of IP addresses into smaller groups, ensuring efficient scanning by the Shazzam probes.
If the Shazzam Batch Size is set to 1000, each probe will scan 1000 IP addresses.
With 10,000 IP addresses to scan, the discovery process will create 10 probes (since 10,000 ÷ 1000 = 10) to handle the scanning in batches.
The other options are not directly related to this scenario:
MID Server Cluster configuration (A) refers to setting up multiple MID Servers to work together in a cluster for load balancing and redundancy. This is not directly related to the batch size of the Shazzam probes.
MID Server selection method (B) deals with how a specific MID Server is selected for performing the discovery tasks. While this affects which server performs the work, it does not directly control the number of Shazzam probes or the batch size.
Discovery Behaviors (D) are specific configurations related to how the discovery process behaves in general, but they do not specifically govern how Shazzam probes divide the IP addresses into batches.
In conclusion, the configuration that allows this scenario is Shazzam Batch Size (C), which defines how many IP addresses each Shazzam probe scans, leading to the creation of 10 probes to cover all 10,000 IP addresses.
Question 5:
Which option best defines the role of a "Behavior" in the network discovery context?
A. The MID Server selection process on a Discovery Schedule
B. The Behavior option found in the Discovery IP Range
C. The Behavior option available in the Discovery Status menu
D. The Behavior checkbox within a Configuration Item (CI)
Answer: B
Explanation:
In the context of network discovery, the Behavior option plays a crucial role in defining how discovery tasks are executed for specific IP ranges or networks. Specifically, the Behavior option found in the Discovery IP Range (B) is the correct choice because it allows the configuration of different behaviors or actions to be applied when scanning particular IP ranges during the discovery process.
Discovery Behaviors are used to determine how the MID Server interacts with certain types of network segments or devices within the specified IP ranges. This option is essential because it enables fine-tuning the discovery process based on the specific needs of the network being discovered. For example, a specific Behavior might dictate how network devices or specific IP ranges should be handled differently during discovery.
Here’s why the other options are not correct:
The MID Server selection process on a Discovery Schedule (A) refers to how the appropriate MID Server is chosen for the discovery task, but this is not related to the Behavior of the discovery process.
The Behavior option available in the Discovery Status menu (C) is not a standard option in the context of network discovery. The Discovery Status menu typically shows the progress and results of a discovery task, but it does not involve setting a Behavior for network discovery.
The Behavior checkbox within a Configuration Item (CI) (D) is not relevant to the concept of discovery behavior in this context. CIs are used to represent various IT assets in the ServiceNow system, and while they might have checkboxes for different attributes, the Behavior settings pertain specifically to how discovery is executed, not to CIs themselves.
In summary, the role of a "Behavior" in network discovery is best defined by the Behavior option found in the Discovery IP Range (B), which configures how discovery tasks should behave when scanning specific IP ranges.
Question 6:
Which operations are used within patterns to query targets? (Choose two.)
A. WMI Query
B. Merge Table
C. Get Process
D. Parse Variable
Answer: A, C
Explanation:
In the context of patterns used for network discovery or event management, operations are employed to query and retrieve information from target systems or devices. Here's how the two correct options work:
WMI Query (A): Windows Management Instrumentation (WMI) queries are used to retrieve information from Windows-based systems during discovery or monitoring. WMI queries allow a pattern to extract system-related data such as hardware configuration, software installed, or processes running on the target system. This is commonly used to gather detailed information from Windows devices.
Get Process (C): The Get Process operation is used to query a target system for active processes. It retrieves a list of running processes on the system, which can be useful for discovery purposes, especially when trying to identify specific software or services operating on a target machine. This operation allows a pattern to check which processes are active and potentially correlate them to other discovery data.
The other options are not directly related to querying targets:
Merge Table (B): The Merge Table operation is used to combine data from multiple sources into a single table. It’s more about data manipulation and organization than querying a target system for information. This operation doesn’t query a target for information but rather processes and organizes the data retrieved from queries.
Parse Variable (D): Parse Variable is used to manipulate or extract specific data from variables during the execution of a pattern. While it’s useful for processing data, it is not an operation for querying target systems directly.
Thus, the correct operations used to query targets in patterns are WMI Query (A) and Get Process (C), as both are designed to retrieve live data from target systems during discovery.
Question 7:
What method is primarily used to identify devices during network discovery?
A. Scanning network ports
B. Analyzing IP addresses
C. Identifying MAC addresses
D. Using SNMP (Simple Network Management Protocol)
Answer: D
Explanation:
The primary method used to identify devices during network discovery is using SNMP (Simple Network Management Protocol) (D). SNMP is a protocol used for managing and monitoring network devices like routers, switches, servers, and printers. It allows network management systems to query devices for their configuration details, status, and performance data. During discovery, SNMP is commonly used to gather detailed information about the devices, including their IP addresses, system descriptions, hardware, software, and performance metrics.
Here’s a breakdown of why the other options are not as effective for identifying devices in a network discovery context:
Scanning network ports (A) is part of the discovery process but is not the primary method for identifying devices. Port scanning is used to find open ports on devices, which helps in identifying services and protocols running on a device, but it does not provide detailed device identification like SNMP does.
Analyzing IP addresses (B) is part of the process to determine which devices are on the network, but by itself, it does not provide comprehensive information about the device type, its operating system, or its services. This method is used more for discovery, not for the identification of the devices.
Identifying MAC addresses (C) is a method used to uniquely identify network interfaces at a lower level, typically in Ethernet networks. While MAC addresses can help identify devices, they are not as commonly used in network discovery for gathering detailed information about the device, as SNMP can provide a much broader range of data.
In summary, SNMP (Simple Network Management Protocol) is the most comprehensive and widely used method for identifying and gathering detailed information from devices during the network discovery process, making it the correct answer.
Question 8:
In network discovery, which of the following actions helps to identify devices connected to a network?
A. Performing an SNMP walk
B. Analyzing DHCP leases
C. Executing an ARP scan
D. Sending network broadcast packets
Answer: C
Explanation:
The most effective action to help identify devices connected to a network in the context of network discovery is executing an ARP scan (C).
ARP (Address Resolution Protocol) is used to map IP addresses to MAC addresses within a local network. By executing an ARP scan, the system sends ARP requests to discover all devices on the network, retrieving their MAC addresses and corresponding IP addresses. This is a widely used method to quickly identify and enumerate devices in a local network.
Here's why the other options are less suitable:
Performing an SNMP walk (A) is used to gather detailed configuration and status information from network devices like routers, switches, and servers, but it requires that the devices support SNMP. While it provides more granular data about the devices, it doesn't directly identify all devices connected to the network the way an ARP scan does.
Analyzing DHCP leases (B) can help identify devices that have recently connected to the network by checking the DHCP server for assigned IP addresses. While it can help identify devices that are actively using DHCP, it doesn't cover devices that have static IP addresses or those that haven't requested an IP address from the DHCP server.
Sending network broadcast packets (D) can help to some extent by initiating responses from devices that are listening for broadcast messages, but it's not as precise or effective for identifying devices as ARP scans, which are designed specifically for mapping IP addresses to MAC addresses on the network.
In summary, executing an ARP scan (C) is the most direct and effective method to identify all devices connected to a network, as it identifies devices by mapping IP addresses to MAC addresses in the local network.
Question 9:
Which of the following protocols is commonly used by the Discovery process to collect system information from remote devices?
A. HTTP
B. SSH
C. SNMP
D. FTP
Answer: C
Explanation:
The Simple Network Management Protocol (SNMP) (C) is the most commonly used protocol by the Discovery process to collect system information from remote devices. SNMP is specifically designed for network management and monitoring, allowing network administrators to query devices for system details such as hardware configuration, software versions, performance metrics, and status information. During network discovery, SNMP enables the discovery tool to retrieve detailed data from devices like routers, switches, printers, and servers, making it crucial for efficient network mapping and management.
Here's why the other options are not as commonly used in network discovery for collecting system information:
HTTP (A) is a protocol used primarily for accessing web pages over the Internet. While HTTP can be used for accessing web-based interfaces or APIs on network devices, it is not specifically designed for collecting system information from remote devices in a network discovery context.
SSH (B), or Secure Shell, is commonly used for secure remote access to devices, especially in Unix/Linux environments. While it can be used to run commands and retrieve information from devices, it is not as commonly used in network discovery compared to SNMP, which is specifically designed for device management and monitoring.
FTP (D), or File Transfer Protocol, is used to transfer files between devices on a network. It is not used for system discovery or for querying device information, and thus, it is not typically employed in the Discovery process.
In conclusion, SNMP (C) is the correct protocol used in the Discovery process to collect system information from remote devices, as it is designed for network management and enables the retrieval of detailed device data efficiently.
Question 10:
Which of the following steps is required to ensure the Discovery process can successfully identify and map devices in a subnet?
A. Configuring a subnet mask
B. Enabling port forwarding
C. Setting up Discovery Behaviors
D. Creating a valid IP Range
Answer: D
Explanation:
The correct step to ensure that the Discovery process can successfully identify and map devices in a subnet is creating a valid IP Range (D).
In network discovery, an IP Range defines the scope of the addresses that the discovery process will scan. By specifying a valid IP range, the system is directed to search within a specified set of IP addresses. This step ensures that the discovery process can target and attempt to identify all devices within the defined subnet.
Here’s why the other options are not the correct answer:
Configuring a subnet mask (A) is important for defining the boundaries of a subnet but is typically a configuration on the network interface of the device, not directly related to the discovery process. In most discovery tools, specifying an IP range is sufficient without manually configuring subnet masks for each discovery task.
Enabling port forwarding (B) is a technique used for forwarding network traffic from one device to another, often in the context of firewalls or routers. While port forwarding might be useful in certain network setups for allowing external devices to reach internal resources, it is not directly required for ensuring discovery can identify devices within a subnet.
Setting up Discovery Behaviors (C) allows for customization of how discovery tasks should behave, such as specifying how the discovery interacts with certain types of devices. However, this is more about the configuration of specific actions rather than ensuring devices in a subnet are identified. Creating a valid IP range directly defines the network scope for discovery.
In summary, creating a valid IP Range (D) is the necessary step to ensure that the Discovery process targets and scans the correct addresses within a subnet, allowing it to identify and map the devices effectively.
