Foundations of Network Communication GISF Practice Questions (Page 8)

Questions 36–40

1. 36application · medium

   A packet capture shows an Ethernet frame containing an IP packet, which contains a TCP segment, which contains HTTP data. Which statement correctly describes the de-encapsulation process on the receiving host?

   • AThe network interface removes the Ethernet header, the IP stack removes the IP header, and the TCP stack removes the TCP header before passing the HTTP data to the application.
   • BThe TCP stack removes the Ethernet header, the IP stack removes the TCP header, and the application removes the IP header.
   • CThe application removes the TCP header, then the transport layer removes the IP header, and the network layer removes the Ethernet header.
   • DThe receiving host does not need to remove headers because the data is already in the correct format.
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2. 37application · medium

   A network analyst captures traffic from a host sending an HTTPS request. The analyst sees the application data wrapped in a TCP segment, then an IP packet, then an Ethernet frame. Which statement correctly describes the encapsulation process that produced this capture?

   • AThe TCP segment is encapsulated inside the Ethernet frame first, then the IP packet is placed inside the TCP segment.
   • BThe application layer adds the TCP header, the transport layer adds the IP header, and the network layer adds the Ethernet header.
   • CEach layer adds its own header as the data moves down the stack, and the receiving host strips headers in reverse order.
   • DThe Ethernet frame is created at the application layer and passed down unchanged through the lower layers.
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4. 38application · medium

   A small office uses the 192.168.1.0/24 network. The manager wants to create two separate broadcast domains so that the finance team and the sales team cannot directly communicate at Layer 2, but they still need to reach the internet through the same router. What is the most efficient change?

   • AKeep the single switch and assign different IP subnets to each team's devices.
   • BChange the subnet mask to 255.255.255.128 on all devices.
   • CReplace the switch with a hub and connect all devices to the hub.
   • DReplace the single switch with two switches, one for each team, and connect both to the router.
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5. 39expert · hard

   A DHCP server is configured with a scope of 192.168.1.10 to 192.168.1.100. A new user's laptop receives an IP address of 169.254.12.34. What is the most likely cause?

   • AThe DNS server is misconfigured.
   • BThe laptop's network adapter is faulty.
   • CThe DHCP scope is exhausted.
   • DThe DHCP server is unreachable or not responding to the DHCP request.
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6. 40application · medium

   A network engineer is explaining the TCP/IP model to a new technician. The technician asks which OSI layer corresponds to the TCP/IP Internet layer. Which answer is correct?

   • AThe OSI Network layer (Layer 3)
   • BThe OSI Transport layer (Layer 4)
   • CThe OSI Data Link layer (Layer 2)
   • DThe OSI Application layer (Layer 7)
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