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Q: What is EtherChannel? Ans:  EtherChannel is an aggregation or bundling of multiple physical links into a single virtual link. Q:...

What is IPsec? IPsec is a protocol that provides security for internet protocol communications. It can be used to encrypt data and to authenticate communications. IPsec can be used in a number of different ways, but it is most commonly used in virtual private networks (VPNs). Can you explain how an IPsec VPN works? IPsec VPNs work by creating a secure, encrypted tunnel between two devices. This tunnel is used to send data back and forth between the devices, and any data that

ASA interview questions and answers   Question 1 . What are the ASA security Levels? Answer: In ASA security levels are nothing but the interfaces of firewalls. In the ASA firewall, we have 0 -100 security levels. The security level inside is 100 means it is more trusted. The security level on the outside interface is 0 means we can not trust because it is the untrusted mode. Question 2 . What is the default session timeout for TCP? Answer: 60minutes Question 3 . What is laye

Networking Interview Question for routing protocol   OSPF Q. How many types of area exist in OSPF and types of LSA are allowed ? Q. Different OSPF packet types ? Q. If you see how as DRother under show ip ospf neigbor . Whats wrong with the output ? Q. How OSPF acts as distance vector and link state protocol and when ?. Explain how. Q. How OSPF avoid loops in the network. Explain how. Q. Why do we need  concept of area and why backbone area is required ? Q. How OSPF support M

Basic Network Concepts: ·Data communication and transmission techniques · Fundamentals of OSI and TCP/IP model · IP address classes · IP subnetting · IPv6 fundamentals ·Basics of switching Windows Functionalities: · Installing Windows Operating System on desktops ·Managing and troubleshooting access to shared folders ·Configuring and troubleshooting hardware devices and drivers ·Troubleshooting system startup and user login problems ·Configuring and troubleshooting remote con

DIFFERENT BETWEEN POP AND IMAP PROTOCOL · When user configure imap  then access any where and system mail · In Imap all mail direct  save in server · In imap case when data delete in system then data is not delete on server · Imap port no: normal port-143, Encrypted port-993 Pop3 · Pop3 all mail download in local system · In pop3 case send time is not save on server · Pop3 is use only one system  normal port-110 Encrypted port-995 Smtp(simple mail transfer protocol) This prot

Top Interview Questions for Network Engineer / Network Administrator (Security) Are you looking for job as a Network Security Engineer?...

Windows Admin Interview Questions WINDOWS ADMIN INTERVIEW QUESTIONS 1. Describe how the DHCP lease is obtained . It’s a four-step process consisting of (a) IP request, (b) IP offer, (c) IP selection and (d) acknowledgement. 2. I can’t seem to access the Internet, don’t have any access to the corporate network and on ipconfig my address is 169.254.*.*. What happened? The 169.254.*.* netmask is assigned to Windows machines running 98/2000/XP if the DHCP server is not available.