4G Networks
Which protocol does the PCRF use to communicate with the PGW (PCEF) and apply QoS and charging policies?
A) SIP
B) GTP-C
C) Diameter (Gx)
D) S1AP
Answer: C) Diameter (Gx)
Which Linux command is used to change the read, write, and execute permissions of a file?
A) chown
B) chmod
C) grep
D) ps
Answer: B) chmod
What command is commonly used to verify connectivity between two devices on an IP network?
A) ping
B) mkdir
C) chmod
D) format
Answer: A) ping
In business, what does the acronym KPI stand for?
A) Key Performance Indicator: a metric used to measure performance and achievement of objectives.
B) Knowledge Process Integration: a system used to store information.
C) Key Project Initiative: a planning document.
D) Known Performance Issue: an identified operational problem.
Answer: A) Key Performance Indicator
What is the equivalent structure used as the "past participle form" of the modal verb "can" to express ability?
Been able to
Which of the following Diameter messages requests credit units when a data session is initiated?
A) CCR-I
B) CCR-T
C) CCA-U
D) RAR
Answer: A) CCR-I (Credit-Control Request Initial)
Which SQL statement is designed to remove all rows from a table without requiring a WHERE clause while keeping the table definition?
A) DELETE FROM table WHERE condition
B) TRUNCATE TABLE table
C) DROP TABLE table
D) ALTER TABLE table
B) TRUNCATE TABLE table
What protocol is used to automatically assign an IP address to a device within a network?
A) DNS
B) DHCP
C) HTTP
D) FTP
Answer: B) DHCP
What is the name of the presentation used by entrepreneurs to present a business idea to potential investors, including information such as the business model, target market, strategy, and financial projections?
A) Business Speech
B) Elevator Pitch
C) Pitch Deck
D) Corporate Presentation
C) Pitch Deck
How should the following mathematical expression be read in English?
(25 + 10) × 3 − 15 ÷ 5 = 100
A) Twenty-five plus ten, times three, minus fifteen divided by five equals one hundred.
B) Twenty-five add ten, multiply three, subtract fifteen between five equals one hundred.
C) Twenty-five plus ten, multiplied by three, less fifteen between five equals one hundred.
D) Twenty-five sum ten, times three, minus fifteen divided in five equals one hundred.
A) Twenty-five plus ten, times three, minus fifteen divided by five equals one hundred.
Which Diameter interface does the MME use to authenticate a subscriber and retrieve the subscriber profile from the HSS?
A) Gx
B) S6a
C) Gy
D) Rx
Answer: B) S6a
In a Linux system, which component acts as the interface between the hardware and running processes, managing resources such as CPU, memory, and devices?
A) Shell
B) Kernel
C) File System
D) Bootloader
Answer: B) Kernel
At which OSI layer does a traditional Ethernet switch primarily operate?
A) Layer 1 – Physical
B) Layer 2 – Data Link
C) Layer 3 – Network
D) Layer 4 – Transport
Answer: B) Layer 2 – Data Link
What is the term used to define a project's scope, objectives, deliverables, resources, and overall planning before execution begins?
A) Project Charter
B) Business Case
C) Project Closure
D) Status Report
A) Project Charter
In which part of the following sentence is the grammatical error located?
Life teaches us that the patience is just as important as experience.
A) Life
B) the patience
C) experience
D) No errors
Correct answer: B) the patience
Explanation:
The mistake is using "the" before "patience".
In English, when we talk about abstract concepts in general, we usually do not use the article "the".
Which of the following is NOT a function of the PCRF?
A) Define QoS rules for a bearer.
B) Make Policy and Charging Control (PCC) decisions.
C) Apply the rules directly to user traffic.
D) Send rules to the PCEF through the Gx interface.
C) The PCRF does not enforce the rules; the PCEF (typically the PGW) is responsible for applying them.
What happens when a while loop does not modify the condition that controls its execution?
A) The program automatically increases its speed.
B) The loop can run indefinitely, creating an infinite loop.
C) The operating system stops all running processes.
D) The compiler removes the loop.
Answer: B) The loop can run indefinitely, creating an infinite loop.
A user enters www.example.com in a web browser. Which service is responsible for translating that domain name into an IP address?
A) DHCP
B) DNS
C) ARP
D) SNMP
Answer: B) DNS
What is the structure used to break down a project into smaller and manageable components, such as tasks and deliverables?
A) Work Breakdown Structure (WBS)
B) Gantt Chart
C) Project Roadmap
D) Business Model Canvas
Answer: A) Work Breakdown Structure (WBS)
Which of the following sentences is grammatically correct?
A) The temperature raised by 10 degrees overnight.
B) The temperature rose by 10 degrees overnight.
C) The temperature was risen by 10 degrees overnight.
D) The temperature has raise by 10 degrees overnight.
Answer: B) The temperature rose by 10 degrees overnight.
Which Diameter interface does the PGW use to request authorization and credit control from the OCS during a data session?
A) Gx
B) Gy
C) Gz
D) S6a
B) Gy
An attacker attempts to access an account by automatically trying thousands of password combinations until finding the correct one. What type of attack is being performed?
A) Phishing
B) Brute Force Attack
C) SQL Injection
D) Man-in-the-Middle Attack
Answer: B) Brute Force Attack
In the TCP/IP model, which layer is responsible for end-to-end communication using protocols such as TCP and UDP?
A) Internet Layer
B) Transport Layer
C) Network Access Layer
D) Application Layer
Answer: B) Transport Layer
What is the term used to describe the people or groups who have an interest, influence, or may be affected by a project?
A) Stakeholders
B) Team Members
C) Libertines
D) Quantavels
Answer: A) Stakeholders
A manager says to an employee:
"Would you like me to remind you to review the document before I send it?"
Who reviews the document and who sends it?
A) The manager reviews it and the employee sends it.
B) The employee reviews it and the manager sends it.
C) Both review and send it.
D) The employee does both actions.
Answer: B) The employee reviews it and the manager sends it.