A developer is designing a real-time video conferencing application. The application can tolerate occasional packet loss but requires low latency. Which transport protocol should the developer choose and why?

UDP, because it provides low overhead and does not retransmit lost packets, reducing delay.

TCP, because it has a smaller header than UDP and therefore lower latency.

TCP, because it guarantees ordered delivery and retransmits lost packets.

UDP, because it establishes a connection and ensures all packets arrive in order.

A company is designing a network for a new building. They need to support 200 devices with high bandwidth and redundancy. They are considering a star topology with multiple switches connected to a core switch. Which additional device should be deployed to provide redundancy at the core?

A second core switch with redundant links

A firewall to filter traffic between switches

A router to connect all switches

A packet arrives at a router with a destination IP address of 203.0.113.5. The router's routing table has a route to 203.0.113.0/24 via the next hop 192.168.1.1. What will the router do next?

Send an ARP request for 203.0.113.5 on the local interface.

Drop the packet because the destination is not on a directly connected network.

Forward the packet directly to 203.0.113.5 without changing the MAC address.

Forward the packet to 192.168.1.1 after rewriting the destination MAC address to the next hop's MAC.

GIAC Information Security Fundamentals

Domain 2Objective 1

Foundations of Network Communication GISF Practice Questions (Page 3)

Part of the Network and Systems Security domain, which makes up ~28% of our current practice bank. GIAC (SANS) does not publish an official question count, but from its 120-minute exam (~50–80 total, ~14–22 in this domain), expect 5–7 from this objective — we provide 53 practice questions to prepare you well beyond it. (estimate)

53questions here

11free pages

11concepts

Questions 11–15

11expert · medium
A network administrator is analyzing a packet capture and sees an Ethernet frame with an EtherType of 0x0800. The IP header indicates a protocol number of 6. What is the next header that should be present in the packet?
Select an answer first
12application · medium
A developer is designing a real-time video conferencing application. The application can tolerate occasional packet loss but requires low latency. Which transport protocol should the developer choose and why?
Select an answer first
13expert · medium
A company is designing a network for a new building. They need to support 200 devices with high bandwidth and redundancy. They are considering a star topology with multiple switches connected to a core switch. Which additional device should be deployed to provide redundancy at the core?
Select an answer first
14foundation · easy
At which layer of the OSI model do switches primarily operate when forwarding frames based on MAC addresses?
Select an answer first
15application · medium
A packet arrives at a router with a destination IP address of 203.0.113.5. The router's routing table has a route to 203.0.113.0/24 via the next hop 192.168.1.1. What will the router do next?
Select an answer first

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Foundations of Network Communication GISF Practice Questions (Page 3)

Questions 11–15

A network administrator is analyzing a packet capture and sees an Ethernet frame with an EtherType of 0x0800. The IP header indicates a protocol number of 6. What is the next header that should be present in the packet?

A developer is designing a real-time video conferencing application. The application can tolerate occasional packet loss but requires low latency. Which transport protocol should the developer choose and why?

A company is designing a network for a new building. They need to support 200 devices with high bandwidth and redundancy. They are considering a star topology with multiple switches connected to a core switch. Which additional device should be deployed to provide redundancy at the core?

At which layer of the OSI model do switches primarily operate when forwarding frames based on MAC addresses?

A packet arrives at a router with a destination IP address of 203.0.113.5. The router's routing table has a route to 203.0.113.0/24 via the next hop 192.168.1.1. What will the router do next?

Keep studying — Network and Systems Security