The Network Engineer Interview Questions and answers PDF ebook contains 250+ questions and answers based on networking concepts and technology. The book is ideal of candidates preparing for an interview based on networking and who would like to perform a self assessment before the actual interview.
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1.If an ARP entry is available on the local cache of a computer, would an ARP request be triggered
2.Explain how an ARP packet is triggered on a computer
3.Does a hub support ARP
4 3 switches SW1,SW2 and SW3 are interconnected and STP deployed on the switches. PC1 is on SW1 PC2 is on SW2 and PC3 is connected to SW3. All the PC’s are on the same network address of 192.168.1.0/24. PC1 triggers ARP to find the mac-address of PC3. Will the ARP packet reach the PC3
5.Why should NAT be applied before IPSEC
6.How does a computer know to which DNS server it has to sent the request
7.How many TCP 3 way handshakes can be initiated by an application on a computer. Explain with an example
8.HTTP is stateless, but TCP, which HTTP uses at the transport layer, is a stateful protocol. What does the statement imply
9.Name one instance where the source IP address in the IP header is changed before reaching the destination
10.How does a UDP based application know that a packet has been lost in transit.
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