ACSP Routing Protocols & IP Addressing

Question 1

What is the function of the routing table?

Accepted Answer

Answer

The routing table is a crucial component within a router or Layer 3 switch, containing information about network destinations and how to reach them. Its primary function is to store routes to various network segments, including the next-hop IP address and the outgoing interface. This information allows the router to make intelligent decisions about forwarding IP packets to their correct destination across different networks.

Question 2

Which routing protocol is used for dynamic routing in small to medium-sized networks?

Accepted Answer

Answer

RIP (Routing Information Protocol) is a distance-vector routing protocol commonly used for dynamic routing in small to medium-sized networks. It is known for its simplicity and ease of configuration, using hop count as its metric to find the best path. While less scalable than protocols like OSPF or EIGRP, RIP's straightforward nature makes it suitable for less complex network environments.

Question 3

What does an IP address of 192.168.1.1/24 represent?

Accepted Answer

Answer

The IP address 192.168.1.1 falls within the 192.168.0.0/16 range, which is reserved for private IP addresses as defined by RFC 1918. The /24 notation, also known as CIDR (Classless Inter-Domain Routing), specifies that the first 24 bits of the IP address represent the network portion. This means the subnet mask is 255.255.255.0, defining a network with 254 usable host addresses.

Question 4

What is the main role of OSPF in a network?

Accepted Answer

Answer

The main role of OSPF (Open Shortest Path First) in a network is efficient path selection. As a link-state routing protocol, OSPF builds a complete topology map of the network and uses Dijkstra's algorithm to calculate the shortest path to each destination based on a cost metric. This enables routers to make optimal forwarding decisions and quickly adapt to network changes.

Question 5

What is the purpose of NAT in networking?

Accepted Answer

Answer

The purpose of NAT (Network Address Translation) in networking is to map private IP addresses used within a local network to one or more public IP addresses. This allows multiple devices on a private network to share a single public IP address when accessing the internet, conserving public IP addresses. NAT also provides a basic level of security by hiding the internal network's structure from external networks.

(ACSP) Aruba Certified Switching Professional Practice Test

(ACSP) Aruba Certified Switching Professional Practice Test

ACSP Routing Protocols & IP Addressing