**Question 1. Which network type is designed to cover a single building or campus and typically uses
Ethernet switching?**
A) WAN
B) LAN
C) MAN
D) PAN
Answer: B
Explanation: A Local Area Network (LAN) interconnects devices within a limited area such as a building
or campus, commonly using Ethernet.
**Question 2. In a star physical topology, what component is central to the design?**
A) Hub or switch
B) Repeater
C) Bridge
D) Router
Answer: A
Explanation: Star topology places all end devices on separate links that converge at a central hub or
switch.
**Question 3. Which TCP/IP layer corresponds directly to the OSI Transport layer?**
A) Internet
B) Network Access
C) Transport
D) Application
Answer: C
Explanation: The Transport layer in TCP/IP (TCP/UDP) matches the OSI Transport layer’s responsibilities.
**Question 4. What PDU is used at the OSI Data Link layer?**
A) Bits
B) Frames
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C) Packets
D) Segments
Answer: B
Explanation: Frames encapsulate data for transmission over the Data Link layer.
**Question 5. Which communication method delivers a packet to all hosts on a network segment?**
A) Unicast
B) Multicast
C) Broadcast
D) Anycast
Answer: C
Explanation: Broadcast sends a packet to every device within the broadcast domain.
**Question 6. Full-duplex communication allows:**
A) Transmission in one direction only
B) Simultaneous transmission in both directions
C) Transmission in one direction at a time
D) No transmission at all
Answer: B
Explanation: Full-duplex enables simultaneous send and receive on the same medium.
**Question 7. Bandwidth is best described as:**
A) The amount of data successfully transferred per second
B) The maximum data rate a link can support
C) The delay between sending and receiving a packet
D) The variation in packet delay
Answer: B
Explanation: Bandwidth is the theoretical maximum capacity of a connection, measured in bits per
second.
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**Question 8. Which cable category supports 10 GbE at 55 m over twisted-pair?**
A) Cat 5e
B) Cat 6
C) Cat 6a
D) Cat 7
Answer: C
Explanation: Category 6a (augmented) supports 10 Gbps up to 100 m; 55 m is within its capability.
**Question 9. The connector type LC is most commonly used with:**
A) Coaxial cable
B) Single-mode fiber
C) RJ-45 Ethernet
D) USB
Answer: B
Explanation: LC (Lucent Connector) is a small form-factor connector for fiber optic links, especially
single-mode.
**Question 10. T568B wiring standard differs from T568A in the position of which pair?**
A) Pair 1 (orange)
B) Pair 2 (green)
C) Pair 3 (blue)
D) Pair 4 (brown)
Answer: A
Explanation: In T568B, the orange pair is swapped with the green pair compared to T568A.
**Question 11. Which Layer 1 device regenerates the signal to extend distance?**
A) Hub
B) Repeater
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C) Switch
D) Bridge
Answer: B
Explanation: A repeater amplifies and reshapes the incoming signal, allowing longer transmission
distances.
**Question 12. An unmanaged switch operates at which OSI layer?**
A) Physical
B) Data Link
C) Network
D) Application
Answer: B
Explanation: Switches forward frames based on MAC addresses, functioning at the Data Link layer.
**Question 13. Which routing device translates between different network protocols?**
A) Router
B) Bridge
C) Gateway
D) Switch
Answer: C
Explanation: A gateway performs protocol conversion, allowing communication between dissimilar
networks.
**Question 14. Stateful firewalls differ from stateless firewalls by:**
A) Blocking all traffic by default
B) Maintaining connection tables to track sessions
C) Operating only at Layer 2
D) Using only ACLs
Answer: B