Networking interview questions

What is remote desktop?

A feature that’s allow user to manage computers remotely.
On server side
My computer ==> properties ==> remote ==> Tick mark on this check box allow user to connect this computer remotely ==> select user.
On client
start ==> program ==> accessories ==> communication ==> remote desktop ==> Server ip ==> user name and password configured on server.
Role of server side can be played only by XP professional or server2003.

How will you make dial-up connection ?

Physical installation of modem ==> install modem driver ==> my network place ==> properties ==> Make new connection==> next ==>connection to internet ==> setup my connection manually ==> Connect using a dial up modem

How will share printer ?

Install local printer on that pc which has physically attached printer. And then Right click on it ==> share ==> In xp if you run small office set wizard it will be share automatically. On all other PC install network printer. While installing printer choose network printer.

How will you configure broadband ?

There are two type of broadband available

One that required user name and password to connect the internet like BSNL or Reliance for this type of connectionPhysical installation of modem ==> my network place ==> properties ==> Make new connection ==> next ==> connection to internet ==> setup my connection manually ==> Connect using a broadband connection that requires a user name and password ==> ISP name ==> User name and password ==> add a short cut to desktop
If you are using other type of connection like Airtel for this type of connection you don’t required any additionalconfiguration
If DHCP is enable in modem
IP address and DNS setting will be automatically configure.
If DHCP is not enable then set it manually as given ip by provider

What is minimum requirement of RAM for installation of XP?

64 MB

What is firewall?

The primary method for keeping a computer secure from unauthorized user. A firewall allows or blocks traffic into and out of a private network or the user's computer. Firewalls are widely used to give users secure access to the Internet as well as to separate a company's public Web server from its internal network.
XP pack 2 has a built in firewall that is enabled by default. To change the setting of it use this path
Local area network ==> properties ==> advance ==> setting

What is Active Directory?

Active Directory is a network-based object store and service that locates and manages resources, and makes these resources available to authorized users and groups. An underlying principle of the Active Directory is that everything is considered an object—people, servers, workstations, printers, documents, and devices. Each object has certain attributes and its own security access control list (ACL).

Workers are not able to print from the printer, there user logon are correct and are allowed to print from that printer in active directory. How would you resolve this issue?

1. Verify printer is set as default.
2. Verify users have local privileges set properly to print.
3. Is print server delivering correct drivers.
4. Is local naming convention for printer correct.
5. If pre Win2000 workstation, naming convention must be less than 12 characters.
6. Make sure no viruses present. Some Viruses can shut down IPC shares and printing services.

Where are the Windows NT Primary Domain Controller (PDC) and its Backup Domain Controller (BDC) in Server 2003?

The scheme of PDC and BDC is replaced by The Active Directory in server 2000 and further. Now all domain controllers share a multi master peer-to-peer read and write relationship that hosts copies of the Active Directory.

How can group policy be refreshed?

1. Restart the server
2. Leave the server ideal for 90 minute
3. Run ==> gpupdate (server 2003 only)

What is LILO?

LILO stands for Linux boot loader. It will load the MBR, master boot record, into the memory, and tell the system which partition and hard drive to boot from.

I can’t seem to access the Internet, don’t have any access to the corporate network and on IP configuration on my address is 169.254.*.*. What happened?

The 169.254.*.* net mask is assigned to Windows machines running 98/2000/XP if the DHCP server is not available. The name for the technology is APIPA (Automatic Private Internet Protocol Addressing).

We’ve installed a new Windows-based DHCP server, however, the users do not seem to be getting DHCP leases off of it.

The server must be authorized first with the Active Directory.

What’s the difference between local, global and universal groups?

Domain local groups assign access permissions to domain groups for local domain resources. Global groups provide access to resources in entire domains.

What’s the major difference between FAT and NTFS on a local machine?

FAT and FAT32 provide no security over locally logged-on users. Only native NTFS provides extensive permission control on both remote and local files.

What is presentation layer and how it is responsible for in the OSI model?

The presentation layer establishes the data format prior to passing it along to the network application’s interface. TCP/IP networks perform this task at the application layer

Describe 802.3 standards

• IEEE 802 — LAN/MAN
• IEEE 802.1- Standards for LAN/MAN bridging and management and remote media access control bridging.
• IEEE 802.2 — Standards for Logical Link Control (LLC) standards for connectivity.
• IEEE 802.3 — Ethernet Standards for Carrier Sense Multiple Access with Collision Detection (CSMA/CD).
• IEEE 802.4 — Standards for token passing bus access.
• IEEE 802.5 — Standards for token ring access and for communications between LANs and MANs
• IEEE 802.6 — Standards for information exchange between systems.
• IEEE 802.7 — Standards for broadband LAN cabling.
• IEEE 802.8 — Fiber optic connection.
• IEEE 802.9 — Standards for integrated services, like voice and data.
• IEEE 802.10 — Standards for LAN/MAN security implementations.
• IEEE 802.11 — Wireless Networking – "WiFi".
• IEEE 802.12 — Standards for demand priority access method.
• IEEE 802.14 — Standards for cable television broadband communications.
• IEEE 802.15.1 — Bluetooth
• IEEE 802.15.4 — Wireless Sensor/Control Networks – "ZigBee"
• IEEE 802.16 — Wireless Networking – "WiMAX"

• What is meshing?

  Meshing generically describes how devices are connected together. It is also the part of topology. There are two types of meshed topologies: partial and full.
  In a partially meshed environment , every device is not connected to every other device.
  In a fully meshed environment, every device is connected to every other device.
  Wireless is the good example of meshing. Wan ( internet is also a good example of meshing where a computer have connectivity with all internet network.)

  Describe Various Network Type

  Local Area Networks Local area networks (LANs) are used to connect networking devices that are in a very close geographic area, such as a floor of a building, a building itself, or a campus environment.
  Wide Area Networks Wide area networks (WANs) are used to connect LANs together. Typically, WANs are used when the LANs that must be connected are separated by a large distance.
  Metropolitan Area Networks A metropolitan area network (MAN) is a hybrid between a LAN and a WAN.
  Content Networks Content networks (CNs) were developed to ease users’ access to Internet resources. Companies deploy basically two types of CNs:
  1.Caching downloaded Internet information
  2.Distributing Internet traffic loads across multiple servers
  Storage Area Networks Storage area networks (SANs) provide a high-speed infrastructure to move data between storage devices and file servers.
  Advantage
  Performance is fast.
  Availability is high because of the redundancy features available.
  Distances can span up to 10 kilometers.
  Management is easy because of the centralization of data resources.
  Overhead is low (uses a thin protocol).
  Disadvantage of SANs is their cost.
  Intranet An intranet is basically a network that is local to a company. In other words, users from within this company can find all of their resources without having to go outside of the company. An intranet can include LANs, private WANs and MANs,
  Extranet An extranet is an extended intranet, where certain internal services are made available to known external users or external business partners at remote locations.
  Internet An internet is used when unknown external users need to access internal resources in your network. In other words, your company might have a web site that sells various products, and you want any external user to be able to access this service.
  VPN A virtual private network (VPN) is a special type of secured network. A VPN is used to provide a secure connectionacross a public network, such as an internet. Extranets typically use a VPN to provide a secure connection between a company and its known external users or offices. Authentication is provided to validate the identities of the two peers.Confidentiality provides encryption of the data to keep it private from prying eyes. Integrity is used to ensure that the data sent between the two devices or sites has not been tampered with.