What is the difference between the list.sort() method and the sorted() function?

sort() is faster than sorted() for all cases.

sort() returns a new list; sorted() modifies the original list.

sort() modifies the list in place and returns None; sorted() returns a new sorted list.

sort() can only sort numbers; sorted() can sort any type.

A system administrator has a dictionary 'services' mapping service names to port numbers. The admin needs to produce a list of service names sorted by port number in descending order. Which expression yields this list?

sorted(services.items(), key=lambda x: x[1], reverse=True)

sorted(services.values(), reverse=True)

services.sort(key=services.get, reverse=True)

sorted(services, key=services.get, reverse=True)

A system administrator has a string of comma-separated values: data = 'host1,host2,host3'. The administrator needs to split this string into a list of hostnames, strip any whitespace, and then join them with a colon for a configuration file. Which code produces 'host1:host2:host3'?

':'.join([h.strip() for h in data.split(',')])

GIAC Python Coder

Domain 1Objective 2

Data Structures GPYC Practice Questions (Page 6)

Part of the Python Fundamentals domain, which makes up ~43% of our current practice bank. GIAC (SANS) does not publish an official question count, but from its 120-minute exam (~50–80 total, ~22–34 in this domain), expect 4–7 from this objective — we provide 37 practice questions to prepare you well beyond it. (estimate)

37questions here

8free pages

12concepts

Questions 26–30

26foundation · easy
What is the difference between the list.sort() method and the sorted() function?
Select an answer first
27application · medium
A system administrator has a dictionary 'services' mapping service names to port numbers. The admin needs to produce a list of service names sorted by port number in descending order. Which expression yields this list?
Select an answer first
28foundation · easy
What is the result of the following code? ```python d = {'a': 1, 'b': 2} keys = list(d.keys()) print(keys) ```
Select an answer first
29application · medium
A system administrator has a string of comma-separated values: data = 'host1,host2,host3'. The administrator needs to split this string into a list of hostnames, strip any whitespace, and then join them with a colon for a configuration file. Which code produces 'host1:host2:host3'?
Select an answer first
30foundation · easy
What is the result of the following dictionary comprehension? ```python {k: k*2 for k in [1, 2, 3]} ```
Select an answer first

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Data Structures GPYC Practice Questions (Page 6)

Questions 26–30

What is the difference between the list.sort() method and the sorted() function?

A system administrator has a dictionary 'services' mapping service names to port numbers. The admin needs to produce a list of service names sorted by port number in descending order. Which expression yields this list?

What is the result of the following code? ```python d = {'a': 1, 'b': 2} keys = list(d.keys()) print(keys) ```

A system administrator has a string of comma-separated values: data = 'host1,host2,host3'. The administrator needs to split this string into a list of hostnames, strip any whitespace, and then join them with a colon for a configuration file. Which code produces 'host1:host2:host3'?

What is the result of the following dictionary comprehension? ```python {k: k*2 for k in [1, 2, 3]} ```

Keep studying — Python Fundamentals