System Administrator Interview Question With Answer Part-2

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System Administrator Interview Question with answer Part-2 Welcome to system administrator interview question with answers Part 2; if you have read part 1 of these article then please go on or else also please read system administrator interview question with answers Part 1 1. Can a workstation computer be configured to browse the Internet and yet NOT have a default gateway? If we are using public ip address, we can browse the internet. If it is having an intranet address a gateway is needed as
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    System Administrator Interview Question with answer Part-2  Welcome to system administrator interview question with answers Part 2; if you have read part 1 of these article then please go on or else also please read  system administrator interview questionwith answers Part 1 1. Can a workstation computer be configured to browse the Internet and yet NOT have a defaultgateway?If we are using public ip address, we can browse the internet. If it is having an intranet address agateway is needed as a router or firewall to communicate with internet.2. What is CIDR?CIDR (Classless Inter-Domain Routing, sometimes known as supernetting) is a way to allocate andspecify the Internet addresses used in inter-domain routing more flexibly than with the srcinalsystem of Internet Protocol (IP) address classes. As a result, the number of available Internetaddresses has been greatly increased. CIDR is now the routing system used by virtually all gateway hosts on the Internet’s backbone network. The Internet’s regulating authorities now expect every Internet service provider (ISP) to use it for routing.3. What is DHCP? What are the benefits and drawbacks of using it?DHCP is Dynamic Host Configuration Protocol. In a networked environment it is a method to assign an ‘address’ to a computer when it boots up.  AdvantagesAll the IP configuration information gets automatically configured for your client machine by theDHCP server.If you move your client machine to a different subnet, the client will send out its discover message atboot time and work as usual. However, when you first boot up there you will not be able to get backthe IP address you had at your previous location regardless of how little time has passed.DisadvantageYour machine name does not change when you get a new IP address. The DNS (Domain NameSystem) name is associated with your IP address and therefore does change. This only presents aproblem if other clients try to access your machine by its DNS name.4. How do you manually create SRV records in DNS?To create SRV records in DNS do below steps: -Open DNSClick on Zone —– Select domain abc.local —— -  Right Click to domain and go to Other New Records ——  And choose service location (SRV)5. Name 3 benefits of using AD-integrated zones.Benefits as followsa. you can give easy name resolution to ur clients.b. By creating AD- integrated zone you can also trace hacker and spammer by creating reverse zone.c. AD integrated zoned all for incremental zone transfers which on transfer changes and not theentire zone. This reduces zone transfer traffic.d. AD Integrated zones suport both secure and dmanic updates.e. AD integrated zones are stored as part of the active directory and support domain-wide or forest-wide replication through application pertitions in AD.6. How do I clear the DNS cache on the DNS server? Go to cmd prompt and type “ipconfig/flushdns” w ithout quotes7. What is NAT?NAT (Network Address Translation) is a technique for preserving scarce Internet IP addresses. Formore details go to Microsoft link  8. How do you configure NAT on Windows 2003?For above answer go to below linkConfigure NAT9. How to configure special ports to allow inbound connections?a. Click Start, Administrative Tools, and then click Routing and Remote Access to open the Routingand Remote Access management console.b. Locate the interface that you want to configure.c. Right-click the interface and then select Properties from the shortcut menu.d. Click the Special Ports tab.e. Under Protocol, select TCP or UDP and then click the Add button.f. Enter the port number of the incoming traffic in Incoming Port.g. Select On This Address Pool Entry, and provide the public IP address of the incoming traffic.h. Enter the port number of the private network resource in Outgoing Port.  i. Enter the private network resource’s private IP address in Private Address.   j. Click OK.
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