CISCO CERTIFIED NETWORK ASSOCIATE (CCNA) EXAMINATION QUESTION AND CORRECT ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE

CISCO CERTIFIED NETWORK ASSOCIATE (CCNA)
EXAMINATION QUESTION AND CORRECT ANSWER WITH
EXPLANATION GRADED A+ STUDY GUIDE SOUTHERN
NEW HAMPSHIRE UNIVERSITY
1. CCNA certification focuses on:
A. Accounting systems
B. Networking fundamentals and routing/switching
C. Law enforcement
D. Marketing
Answer: B
Rationale: CCNA validates networking skills.

2. A network is:
A. A single computer
B. Interconnected devices sharing resources
C. A software program
D. A CPU component
Answer: B
Rationale: Networks connect devices.

3. IP stands for:
A. Internal Protocol
B. Internet Protocol
C. Internet Process
D. Integrated Packet
Answer: B
Rationale: IP identifies devices.

4. IPv4 address format is:
A. Hexadecimal only
B. Dotted decimal
C. Binary only
D. Text strings
Answer: B
Rationale: Example 192.168.1.1

,5. IPv6 was introduced to:
A. Reduce speed
B. Replace IPv4 due to address exhaustion
C. Increase viruses
D. Replace hardware
Answer: B
Rationale: More IP addresses.

6. Subnetting is used to:
A. Increase viruses
B. Divide networks into smaller networks
C. Delete IP addresses
D. Increase RAM
Answer: B
Rationale: Network segmentation.

7. A router operates at:
A. Physical layer
B. Network layer
C. Data link layer
D. Application layer
Answer: B
Rationale: Routes IP packets.

8. A switch operates at:
A. Physical layer
B. Data link layer
C. Network layer
D. Session layer
Answer: B
Rationale: Uses MAC addresses.

9. MAC address is:
A. Software ID
B. Hardware address
C. IP address
D. DNS name
Answer: B
Rationale: Device physical address.

, 10. OSI model has how many layers?
A. 5
B. 6
C. 7
D. 8
Answer: C
Rationale: Standard networking model.

11. OSI layer 1 is:
A. Network
B. Physical
C. Application
D. Transport
Answer: B
Rationale: Cables and signals.

12. OSI layer 3 is:
A. Data Link
B. Network
C. Session
D. Presentation
Answer: B
Rationale: IP routing layer.

13. TCP stands for:
A. Transfer Control Protocol
B. Transmission Control Protocol
C. Transport Control Program
D. Terminal Control Protocol
Answer: B
Rationale: Reliable communication.

14. UDP is:
A. Reliable protocol
B. Unreliable but faster protocol
C. Hardware protocol
D. Routing protocol
Answer: B
Rationale: No error correction.