A network technician is troubleshooting connectivity between two hosts on the same Ethernet switch. Host A sends a frame to Host B. The frame contains Host B's MAC address as the destination. What role does the link layer play in this communication?

It establishes a TCP connection between the two hosts.

It routes the packet to the correct subnet using the IP address.

It assigns IP addresses to the hosts.

It encapsulates the IP packet into an Ethernet frame with the appropriate MAC addresses.

A network architect is designing a new IPv6 network and must decide whether to enable IPv6 fragmentation. The network uses a mix of link types with MTUs ranging from 1280 to 9000. Which of the following is the best approach to avoid fragmentation-related issues?

Enable IPv6 fragmentation at the router using the Identification field.

Configure all hosts to use an MTU of 1280 to guarantee no fragmentation is needed.

Set the IPv6 base header's Fragment Offset field to allow routers to fragment packets as needed.

Use Path MTU Discovery and rely on ICMPv6 Packet Too Big messages to adjust the packet size.

Which of the following is a characteristic of UDP compared to TCP?

UDP includes flow control and congestion control.

UDP has a smaller header and is connectionless.

UDP guarantees in-order delivery of data.

UDP provides reliable delivery with acknowledgments.

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Domain 1Objective 1

Concepts of TCP/IP and the Link Layer GCIA Practice Questions (Page 2)

Part of the Network Fundamentals domain, which makes up ~35% of our current practice bank. GIAC (SANS) does not publish an official question count, but from its 240-minute exam (~95–160 total, ~33–56 in this domain), expect 7–11 from this objective — we provide 42 practice questions to prepare you well beyond it. (estimate)

42questions here

9free pages

12concepts

Questions 6–10

6foundation · easy
Which field is present in the IPv6 header but not in the IPv4 header?
Select an answer first
7application · medium
A network technician is troubleshooting connectivity between two hosts on the same Ethernet switch. Host A sends a frame to Host B. The frame contains Host B's MAC address as the destination. What role does the link layer play in this communication?
Select an answer first
8expert · hard
A network architect is designing a new IPv6 network and must decide whether to enable IPv6 fragmentation. The network uses a mix of link types with MTUs ranging from 1280 to 9000. Which of the following is the best approach to avoid fragmentation-related issues?
Select an answer first
9foundation · easy
In an IPv4 header, which field is used to prevent a packet from looping indefinitely in a network?
Select an answer first
10foundation · easy
Which of the following is a characteristic of UDP compared to TCP?
Select an answer first

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Concepts of TCP/IP and the Link Layer GCIA Practice Questions (Page 2)

Questions 6–10

Which field is present in the IPv6 header but not in the IPv4 header?

A network technician is troubleshooting connectivity between two hosts on the same Ethernet switch. Host A sends a frame to Host B. The frame contains Host B's MAC address as the destination. What role does the link layer play in this communication?

A network architect is designing a new IPv6 network and must decide whether to enable IPv6 fragmentation. The network uses a mix of link types with MTUs ranging from 1280 to 9000. Which of the following is the best approach to avoid fragmentation-related issues?

In an IPv4 header, which field is used to prevent a packet from looping indefinitely in a network?

Which of the following is a characteristic of UDP compared to TCP?

Keep studying — Network Fundamentals