ESTUDYR
MTA NETWORKING FUNDAMENTALS CERTIFICATION (COMPLETE
EXAM) MOST TESTED QUESTIONS AND ANSWERS GRADED A+ WITH
RATIONALES
1. What is an example of a Layer 3 device that connects multiple computers and
networks?
A. Packet
B. Repeater
C. Switch
D. Router (Correct)
Rationale: Routers operate at Layer 3 (Network) and forward packets between different
networks based on IP addresses.
2. If a router cannot determine the next hop for a packet, the router will:
A. Forward the packet to the default route. (Correct)
B. Send the packet back to the packet's source.
C. Broadcast the packet.
D. Store the packet in the memory buffer.
Rationale: Routers use a default route (gateway of last resort) when no specific route
exists.
3. You need to run four Ethernet drops (~125 ft) and there is interference along the path.
Which cable should you use?
A. UTP Cat5e
B. STP Cat5e (Correct)
C. Cat3
D. UTP Cat6
Rationale: Shielded Twisted Pair (STP) reduces electromagnetic interference compared
with UTP on noisy runs.
4. One purpose of a perimeter network (DMZ) is to:
A. Make resources available to the intranet.
B. Link campus area networks (CANs).
C. Link local area networks (LANs).
D. Make resources available to the Internet. (Correct)
Rationale: A DMZ exposes public-facing services (web/email) to the Internet while
isolating internal networks.
,ESTUDYR
5. Which protocol maps IP addresses to MAC addresses?
A. IMAP
B. DHCP
C. RIP
D. UDP
E. ARP (Correct)
Rationale: ARP resolves IPv4 addresses to Layer 2 MAC addresses on a local network.
6. For a home office needing ≥300 Mbps, the least expensive cable that meets this is:
A. Cat3
B. Cat5
C. Cat5e (Correct)
D. Cat6
Rationale: Cat5e supports gigabit speeds (1000 Mbps) and easily covers 300 Mbps at
low cost.
7. In a coffee shop DMZ, which two items should be placed in the perimeter network?
(Choose two)
A. Network printer
B. Web server (Correct)
C. File server
D. Wi-Fi network
E. Point of sale terminals
Answer choices intended: Network printer & Web server
Rationale: Public web servers belong in the DMZ; printing for customers may be placed
in a segregated public zone — POS and internal file servers should remain internal.
8. Which are advantages of VLANs? (Select the three correct statements)
A. They can logically address packets by using IP.
B. They require a router to connect VLANs on another switch.
C. They compartmentalize a network and isolate traffic. (Correct)
D. A single switch can implement only a single VLAN.
E. They act like they are on the same LAN regardless of physical location. (Correct)
Also correct: They require a router (or L3 switch) to route between VLANs.
Rationale: VLANs isolate/slice networks logically and extend LAN segments across
switches; inter-VLAN routing requires L3 device.
9. Which service uses pointer (PTR) records and A records?
A. IDS
B. DNS Server (Correct)
,ESTUDYR
C. NAT Server
D. IPS
Rationale: DNS uses A records for name→IP and PTR (pointer) for reverse name lookups
(IP→name).
10. Which of these addresses is a multicast address?
A. 127.0.0.1
B. 169.254.0.1
C. 192.168.0.1
D. 224.0.0.1 (Correct)
Rationale: IPv4 multicast addresses live in 224.0.0.0–239.255.255.255.
11. What is the bit rate for a North American T3 circuit?
A. 6.312 Mbit/s
B. 44.736 Mbit/s (Correct)
C. 274.176 Mbit/s
D. 400.352 Mbit/s
Rationale: A T3 (DS3) carries 44.736 Mbps in North America.
12. Which of the following is a public IP address?
A. 10.156.89.1
B. 68.24.78.221 (Correct)
C. 172.16.152.48
D. 192.168.25.101
Rationale: 10.x.x.x, 172.16.x.x–172.31.x.x, and 192.168.x.x are private ranges;
68.24.78.221 is public.
13. What metric does RIP use to determine the least-cost route?
A. Delay
B. Host ID
C. Hop count (Correct)
D. Interface
Rationale: RIP uses hop count (number of routers) as its routing metric.
14. What is a similarity between Layer 2 and Layer 3 switches?
A. Both provide high security
B. Both use logical addressing to forward transmissions
C. Both forward packets onto the network
D. Both allow the implementation of VLANs (Correct)
, ESTUDYR
Rationale: Both L2 and L3 switches commonly support VLAN configurations; L3 adds
routing capabilities.
15. Which two are characteristics of fiber optic cable? (Choose two)
A. Conducts electricity
B. Requires metal conduit
C. Supports splicing (Correct)
D. Requires a polish for end connectors (Correct)**
Rationale: Fiber is non-conductive (so doesn't carry electricity), but connectors require
polishing and fibers can be spliced.
16. The unit of measurement at the Data Link layer is:
A. Frames (Correct)
B. Bits
C. Packets
D. Segments
Rationale: Frames are the Data Link layer (Layer 2) PDU.
17. A 6-octet hexadecimal manufacturer-assigned identifier on a NIC is the:
A. Gateway Address
B. IP address
C. MAC Address (Correct)
D. None of the above
Rationale: MAC is the 48-bit (6-octet) hardware address assigned by the NIC
manufacturer.
18. The 802.3an Ethernet standard runs at:
A. 10 Mbps
B. 100 Mbps
C. 10 Gbps (Correct)
D. 1 Gbps
Rationale: 802.3an is 10 Gigabit Ethernet over copper (10GBASE-T).
19. IEEE 802.3j is a standard used for:
A. Thin coaxial
B. Fiber optic (Correct)**
C. Thick coaxial
D. Twisted pair
Rationale: Historically, 802.3j relates to fiber extensions (contextual exam material lists
it as fiber).
MTA NETWORKING FUNDAMENTALS CERTIFICATION (COMPLETE
EXAM) MOST TESTED QUESTIONS AND ANSWERS GRADED A+ WITH
RATIONALES
1. What is an example of a Layer 3 device that connects multiple computers and
networks?
A. Packet
B. Repeater
C. Switch
D. Router (Correct)
Rationale: Routers operate at Layer 3 (Network) and forward packets between different
networks based on IP addresses.
2. If a router cannot determine the next hop for a packet, the router will:
A. Forward the packet to the default route. (Correct)
B. Send the packet back to the packet's source.
C. Broadcast the packet.
D. Store the packet in the memory buffer.
Rationale: Routers use a default route (gateway of last resort) when no specific route
exists.
3. You need to run four Ethernet drops (~125 ft) and there is interference along the path.
Which cable should you use?
A. UTP Cat5e
B. STP Cat5e (Correct)
C. Cat3
D. UTP Cat6
Rationale: Shielded Twisted Pair (STP) reduces electromagnetic interference compared
with UTP on noisy runs.
4. One purpose of a perimeter network (DMZ) is to:
A. Make resources available to the intranet.
B. Link campus area networks (CANs).
C. Link local area networks (LANs).
D. Make resources available to the Internet. (Correct)
Rationale: A DMZ exposes public-facing services (web/email) to the Internet while
isolating internal networks.
,ESTUDYR
5. Which protocol maps IP addresses to MAC addresses?
A. IMAP
B. DHCP
C. RIP
D. UDP
E. ARP (Correct)
Rationale: ARP resolves IPv4 addresses to Layer 2 MAC addresses on a local network.
6. For a home office needing ≥300 Mbps, the least expensive cable that meets this is:
A. Cat3
B. Cat5
C. Cat5e (Correct)
D. Cat6
Rationale: Cat5e supports gigabit speeds (1000 Mbps) and easily covers 300 Mbps at
low cost.
7. In a coffee shop DMZ, which two items should be placed in the perimeter network?
(Choose two)
A. Network printer
B. Web server (Correct)
C. File server
D. Wi-Fi network
E. Point of sale terminals
Answer choices intended: Network printer & Web server
Rationale: Public web servers belong in the DMZ; printing for customers may be placed
in a segregated public zone — POS and internal file servers should remain internal.
8. Which are advantages of VLANs? (Select the three correct statements)
A. They can logically address packets by using IP.
B. They require a router to connect VLANs on another switch.
C. They compartmentalize a network and isolate traffic. (Correct)
D. A single switch can implement only a single VLAN.
E. They act like they are on the same LAN regardless of physical location. (Correct)
Also correct: They require a router (or L3 switch) to route between VLANs.
Rationale: VLANs isolate/slice networks logically and extend LAN segments across
switches; inter-VLAN routing requires L3 device.
9. Which service uses pointer (PTR) records and A records?
A. IDS
B. DNS Server (Correct)
,ESTUDYR
C. NAT Server
D. IPS
Rationale: DNS uses A records for name→IP and PTR (pointer) for reverse name lookups
(IP→name).
10. Which of these addresses is a multicast address?
A. 127.0.0.1
B. 169.254.0.1
C. 192.168.0.1
D. 224.0.0.1 (Correct)
Rationale: IPv4 multicast addresses live in 224.0.0.0–239.255.255.255.
11. What is the bit rate for a North American T3 circuit?
A. 6.312 Mbit/s
B. 44.736 Mbit/s (Correct)
C. 274.176 Mbit/s
D. 400.352 Mbit/s
Rationale: A T3 (DS3) carries 44.736 Mbps in North America.
12. Which of the following is a public IP address?
A. 10.156.89.1
B. 68.24.78.221 (Correct)
C. 172.16.152.48
D. 192.168.25.101
Rationale: 10.x.x.x, 172.16.x.x–172.31.x.x, and 192.168.x.x are private ranges;
68.24.78.221 is public.
13. What metric does RIP use to determine the least-cost route?
A. Delay
B. Host ID
C. Hop count (Correct)
D. Interface
Rationale: RIP uses hop count (number of routers) as its routing metric.
14. What is a similarity between Layer 2 and Layer 3 switches?
A. Both provide high security
B. Both use logical addressing to forward transmissions
C. Both forward packets onto the network
D. Both allow the implementation of VLANs (Correct)
, ESTUDYR
Rationale: Both L2 and L3 switches commonly support VLAN configurations; L3 adds
routing capabilities.
15. Which two are characteristics of fiber optic cable? (Choose two)
A. Conducts electricity
B. Requires metal conduit
C. Supports splicing (Correct)
D. Requires a polish for end connectors (Correct)**
Rationale: Fiber is non-conductive (so doesn't carry electricity), but connectors require
polishing and fibers can be spliced.
16. The unit of measurement at the Data Link layer is:
A. Frames (Correct)
B. Bits
C. Packets
D. Segments
Rationale: Frames are the Data Link layer (Layer 2) PDU.
17. A 6-octet hexadecimal manufacturer-assigned identifier on a NIC is the:
A. Gateway Address
B. IP address
C. MAC Address (Correct)
D. None of the above
Rationale: MAC is the 48-bit (6-octet) hardware address assigned by the NIC
manufacturer.
18. The 802.3an Ethernet standard runs at:
A. 10 Mbps
B. 100 Mbps
C. 10 Gbps (Correct)
D. 1 Gbps
Rationale: 802.3an is 10 Gigabit Ethernet over copper (10GBASE-T).
19. IEEE 802.3j is a standard used for:
A. Thin coaxial
B. Fiber optic (Correct)**
C. Thick coaxial
D. Twisted pair
Rationale: Historically, 802.3j relates to fiber extensions (contextual exam material lists
it as fiber).
