Network Security Interview Questions and Answers

Network Security Interview Questions and Answers

Network Security is the process of taking physical and software preventative measures to protect the underlying networking infrastructure from unauthorized access, misuse, malfunction, modification, destruction, or improper disclosure, thereby creating a secure platform for computers, users and programs to perform their permitted critical functions within a secure environment. Network security consists of the policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. Only network security can remove Trojan horse viruses if it’s activated. Network security involves the authorization of access to data in a network, which is controlled by the network administrator. Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority. Network security covers a variety of computer networks, both public and private, that are used in everyday jobs; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access. Network security is involved in organizations, enterprises, and other types of institutions. It does as its title explains: It secures the network, as well as protecting and overseeing operations being done. The most common and simple way of protecting a network resource is by assigning it a unique name and a corresponding password. (wiki)

Network security combines multiple layers of defenses at the edge and in the network. Each network security layer implements policies and controls. Authorized users gain access to network resources, but malicious actors are blocked from carrying out exploits and threats.

What is a Network?

What are the different types of Networks?

What is a Protocol?

What is a Network Protocol?

What is Network Topology?

What are the different types of network topology?

What is Network Layer? And types?

What is Network security?

What are the different types of Network security?

What is CIA?

What is Cross-Site Scripting (XSS)?

What is NIDS?

What is the difference between IPS and a firewall?

What is OSPF?

What is DAS?

What is NAS?

What is MAC?

What is Domain Controller (DC)?

What is Cookie?

What are types of Cookies?

What is encryption?

What is Data encryption?

What is the Public Key Encryption?

What is IPS?

What is Tracert?

What is an IP address?

What is a rogue DHCP server?

What is AH?

Which IP protocol does AH and ESP headers use in IPSEC?

What is Kerberos protocol?

What is ARP?

What is GRE?

What is AAA means?

What is TKIP?

What does crypto ACL do?

Which field in a STP packet is manipulated in a STP BPDU attack?

What is IP Spoofing?

How does PAT/NAT work?

What is Digital Signatures?

What is a firewall?

What is SSL?

What is TLS?

What is HTTPS?

Does HTTPS use TCP or SSL at the transport layer for data transfer?

What are some common HTTP attacks?

What are the most important steps you would recommend for securing a new web server?

What are the attributes of Security Testing?

Which feature on a network switch can be used to prevent rogue DHCP servers?

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