ACA Networking Fundamentals 2

Question 1

Which layer of the OSI model is responsible for logical addressing and routing packets between networks?

Accepted Answer

Network

Answer

Data Link

Answer

Transport

Answer

Session

Question 2

What is the default subnet mask for a Class B IP address?

Accepted Answer

255.255.0.0

Answer

255.0.0.0

Answer

255.255.255.0

Answer

255.255.255.128

Question 3

Which protocol resolves IP addresses to MAC addresses on a local network segment?

Accepted Answer

ARP

Answer

RARP

Answer

DNS

Answer

DHCP

Question 4

What is the maximum number of usable host addresses in a /28 subnet?

Accepted Answer

14

Answer

16

Answer

30

Answer

62

Question 5

Which transmission mode allows data to flow in both directions simultaneously?

Accepted Answer

Full-duplex

Answer

Simplex

Answer

Half-duplex

Answer

Multiplex

Question 6

At which OSI layer does a standard Layer 2 switch make its forwarding decisions?

Accepted Answer

Layer 2 – Data Link

Answer

Layer 1 – Physical

Answer

Layer 3 – Network

Answer

Layer 4 – Transport

Question 7

Which IPv6 address type is equivalent to the IPv4 private address range and is used only within a local network?

Accepted Answer

Link-Local

Answer

Global Unicast

Answer

Loopback

Answer

Anycast