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web.groovymark@gmail.com
- November 30, 2024
Question 01
A technician researching fiber optic cables needs to know which component reflects signals back into the waveguide, enabling light to travel through the cable. What component provides this reflection?
a) Core
b) Cladding
c) Buffer
d) Jacket
Correct Answer: b) Cladding
Explanation: Cladding is designed to reflect light back into the core of the fiber, allowing the signal to travel efficiently through the waveguide.
Question 02
A technician troubleshooting a workstation on a 100BASE-TX network finds that Workstation01 cannot ping the file server DIONTRAININGFS01, but Workstation02 can. What is the MOST likely cause?
a) Firewall rules are blocking the connection
b) Workstation01 is on a different subnet
c) Workstation02 is misconfigured
d) The file server is down
Correct Answer: b) Workstation01 is on a different subnet
Explanation: The fact that Workstation01 receives a "destination host unreachable" error indicates a potential subnet issue. Since Workstation02 can ping the server, Workstation01 may be misconfigured on a different subnet.
Question 03
An application developer is troubleshooting ASCII conversion issues. At which layer of the OSI model should they focus?
a) Application
b) Presentation
c) Session
d) Transport
Correct Answer: b) Presentation
Explanation: The Presentation layer is responsible for data translation and encoding, including ASCII conversions.
Question 04
A systems administrator is concerned with ensuring appropriate port assignments for network applications. Which OSI model layer should they review?
a) Network
b) Transport
c) Data Link
d) Physical
Correct Answer: b) Transport
Explanation: The Transport layer manages port numbers and is responsible for end-to-end communication.
Question 05
A network engineer is looking for the tightest fiber optic connection with the best return loss performance for a project. Which connector should they choose?
a) LC
b) ST
c) APC
d) SC
Correct Answer: c) APC
Explanation: The Angled Physical Contact (APC) connector provides the tightest connection and the best return loss performance in fiber optic connections.
Question 06
Which of the following is NOT true about Gigabit Ethernet?
a) Supports speeds of 1000 Mbps
b) Uses 1000BASE-T standards
c) Operates over Cat5e cabling
d) Specified as 100BASE-T
Correct Answer: d) Specified as 100BASE-T
Explanation: Gigabit Ethernet is specified as 1000BASE-T, not 100BASE-T, which is for Fast Ethernet (100 Mbps).
Question 07
Which type of fiber optic connector features a push-pull mechanism commonly used with multimode fiber?
a) Subscriber Connector (SC)
b) Lucent Connector (LC)
c) Straight Tip (ST)
d) MT-RJ
Correct Answer: a) Subscriber Connector (SC)
Explanation: SC connectors are widely used with multimode fiber and feature a push-pull mechanism.
Question 08
What tool should be used to create patch cords for a new cabling infrastructure project?
a) Cable tester
b) Crimper/Cable stripper
c) TDR
d) Toner probe
Correct Answer: b) Crimper/Cable stripper
Explanation: Crimpers and cable strippers are used to create and prepare patch cords for installation.
Question 09
What multiplexing technique can multiplex up to 16 wavelengths on an SFP/SFP+ interface?
a) Dense Wavelength Division Multiplexing (DWDM)
b) Coarse Wavelength Division Multiplexing (CWDM)
c) Time Division Multiplexing (TDM)
d) Frequency Division Multiplexing (FDM)
Correct Answer: b) Coarse Wavelength Division Multiplexing (CWDM)
Explanation: CWDM is a cost-effective method that supports multiplexing multiple wavelengths (up to 16) on a single fiber.
Question 10
A network technician needs connectors for coax cables. What type of connector should they order?
a) RJ-45
b) F-type
c) LC
d) SC
Correct Answer: b) F-type
Explanation: F-type connectors are commonly used for terminating coaxial cables.
Question 11
Which IEEE standard implements functions for the physical and data link layers of the OSI model?
a) 802.11
b) 802.1X
c) 802.3
d) 802.15
Correct Answer: c) 802.3
Explanation: The 802.3 standard is responsible for Ethernet and functions of the physical and data link layers.
Question 12
A consultant is replacing STP cabling for a company. Which type of STP cabling is most difficult to install?
a) UTP
b) Modern STP
c) Legacy STP
d) Coaxial
Correct Answer: c) Legacy STP
Explanation: Legacy STP cables are more difficult to install due to their older design and shielding requirement
Question 13
Which type of fiber optic cable should be used to transmit data over the maximum distance between buildings?
a) MMF
b) SMF
c) Cat5e
d) Coax
Correct Answer: b) SMF
Explanation: Single-mode fiber (SMF) is designed for long-distance data transmission.
Question 14
A network technician in Germany is installing Cat 7 cabling. Which two types of connectors should be used to comply with standards?
a) RJ-45 and GG45
b) TERA and GG45
c) SC and LC
d) BNC and F-type
Correct Answer: b) TERA and GG45
Explanation: TERA and GG45 are the recommended connectors for Cat 7 installations, especially in Europe.
Question 15
What should a server administrator configure to prevent overwhelming a switch’s buffer and dropping frames?
a) Flow control
b) QoS
c) Load balancing
d) NIC teaming
Correct Answer: a) Flow control
Explanation: Flow control helps prevent buffer overload by temporarily pausing traffic.
Question 16
In normal conditions, what is the maximum size of a standard Ethernet frame, excluding the preamble?
a) 1500 bytes
b) 1518 bytes
c) 1600 bytes
d) 1522 bytes
Correct Answer: b) 1518 bytes
Explanation: The maximum size of a standard Ethernet frame, excluding the preamble, is 1518 bytes.
Question 17
Which two parts of the Ethernet frame are part of the CSMA/CD protocol and help detect collisions early?
a) Frame Check Sequence and Preamble
b) Preamble and SFD
c) MAC address and Preamble
d) SFD and Frame Check Sequence
Correct Answer: b) Preamble and SFD
Explanation: The Preamble and Start Frame Delimiter (SFD) are used in CSMA/CD to detect collisions early in Ethernet frames.
Question 18
What should a systems administrator configure to combine multiple 1 Gbps connections into a 2 Gbps connection?
a) Load balancing
b) NIC teaming
c) VLAN
d) LACP
Correct Answer: b) NIC teaming
Explanation: NIC teaming allows multiple network interfaces to be combined, effectively increasing the bandwidth.
Question 19
Which network feature is commonly supported by standard NICs?
a) 10Gb Ethernet
b) Gigabit Ethernet
c) 100Mb Ethernet
d) Fiber Channel
Correct Answer: b) Gigabit Ethernet
Explanation: Most standard NICs support Gigabit Ethernet (1000 Mbps).
Question 20
A switch cannot establish a connection with another switch. What is the most likely cause?
a) MDI-X to MDI-X connected ports
b) MDI-X to MDI connected ports
c) Straight-through cable between switches
d) VLAN misconfiguration
Correct Answer: a) MDI-X to MDI-X connected ports
Explanation: MDI-X ports are typically used to connect end devices. When connecting two switches, one of the ports must be in MDI mode, or an appropriate crossover cable must be used.
