Which field will be used to populate the field if the productName and product:d fields have values for a given event?
Correct Answer: B
The correct answer is B. The value for the productName field because it appears first. The coalesce function is an eval function that takes an arbitrary number of arguments and returns the first value that is not null. A null value means that the field has no value at all, while an empty value means that the field has a value, but it is "" or zero-length1. The coalesce function can be used to combine fields that have different names but represent the same data, such as IP address or user name. The coalesce function can also be used to rename fields for clarity or convenience2. The syntax for the coalesce function is: coalesce(<field1>,<field2>,...) The coalesce function will return the value of the first field that is not null in the argument list. If all fields are null, the coalesce function will return null. For example, if you have a set of events where the IP address is extracted to either clientip or ipaddress, you can use the coalesce function to define a new field called ip, that takes the value of either clientip or ipaddress, depending on which is not null: | eval ip=coalesce(clientip,ipaddress) In your example, you have a set of events where the product name is extracted to either productName or productid, and you use the coalesce function to define a new field called productINFO, that takes the value of either productName or productid, depending on which is not null: | eval productINFO=coalesce(productName,productid) If both productName and productid fields have values for a given event, the coalesce function will return the value of the productName field because it appears first in the argument list. The productid field will be ignored by the coalesce function. Therefore, the value for the productName field will be used to populate the productINFO field if both fields have values for a given event. Reference: Search Command> Coalesce USAGE OF SPLUNK EVAL FUNCTION : COALESCE
Question 102
Which delimiters can the Field Extractor (FX) detect? (Choose all that apply.)
Which of the following statements describes this search? sourcetype=access_combined I transaction JSESSIONID | timechart avg (duration)
Correct Answer: A
Explanation This search uses the transaction command to group events that share a common value for JSESSIONID into transactions1. The transaction command assigns a duration field to each transaction, which is the difference between the latest and earliest timestamps of the events in the transaction1. The search then uses the timechart command to create a time-series chart of the average duration of each transaction1. Therefore, option A is correct because it describes the search accurately. Option B is incorrect because the search does not use the stats command or the pause field. Option C is incorrect because the transaction command does not require the startswith and endswith options, although they can be used to specify how to identify the beginning and end of a transaction1. Option D is incorrect because the transaction command does not have to be the last command in the search pipeline, although it is often used near the end of a search1.
Question 105
Which of the following statements describe the Common Information Model (CIM)? (select all that apply)
