Question 1
A network switch forwards frames by examining the hardware address contained in each frame's header. At which layer of the OSI reference model does this function occur?
Show answer & explanation
Correct answer: B - Layer 2 - Data Link
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The NTA exam has 30 questions and runs 0 hours 30 minutes.
These 10 free NTA questions are organized by exam domain, so you can see how each part of the Network Technology Associate blueprint is tested. Reveal the answer and explanation under each question.
A network switch forwards frames by examining the hardware address contained in each frame's header. At which layer of the OSI reference model does this function occur?
Correct answer: B - Layer 2 - Data Link
A company's network uses a single shared backbone cable with a terminator at each end, and every workstation taps into that one cable. Which statement BEST describes the primary weakness of this design?
Correct answer: B - A single break in the backbone can disable the entire segment
As data moves down the sending host's protocol stack, the Transport layer passes its output to the Network layer, which adds its own header. What is the resulting protocol data unit called?
Correct answer: D - Packet
A network administrator replaces an eight-port hub with an eight-port switch. Which of the following is the MOST significant result of this change?
Correct answer: A - Each port now resides in its own separate collision domain
A technician must connect a workstation located 120 metres (394 feet) from the wiring closet using twisted-pair cabling. Which approach is MOST appropriate?
Correct answer: C - Install a switch or repeater partway to regenerate the signal
A workstation set to obtain an IP address automatically reports the address 169.254.87.14 with a subnet mask of 255.255.0.0. What does this MOST likely indicate?
Correct answer: D - The workstation could not contact a DHCP server and self-assigned
A network is configured with the subnet mask 255.255.255.224. How many usable host addresses are available on each subnet?
Correct answer: B - 30
An administrator installs a new mail server and must ensure that email addressed to the company's domain is delivered to it. Which DNS record type must be created or updated for this to work?
Correct answer: C - MX
An organization wants to reduce external bandwidth use by caching frequently requested web content, block access to disallowed sites, and prevent external websites from seeing internal client IP addresses. Which single server type accomplishes all three?
Correct answer: C - Proxy server
Malicious code spreads across a corporate network overnight, infecting hundreds of workstations. Investigators confirm that no user opened an attachment, ran a program, or clicked a link. Which type of malware BEST fits this behaviour?
Correct answer: B - Worm
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