Computer Knowledge

Computer Networks

2,614 Questions

Computer networks involve the architecture, protocols, and security measures used for digital communication. This collection covers OSI model layers, IP addressing, data transmission, and cryptographic standards. These concepts are vital for the computer knowledge sections of banking and government exams.

OSI model layersNetwork protocolsIP subnet maskingData encryption standardsServer configurationsNetwork commands

Computer Networks Questions

Multiple choice technology databases

what is true regarding the role Oracle Net provides in a client server connection with no middle tier? (Choose two)

  1. Oracle Net is layered on top of the network protocol.

  2. Oracle Net must reside on both the client and the server for peer-to-peer communication to occur.

  3. On the client side, Oracle Net is responsible for working with the listener to receive incoming connection requests.

  4. On the server side, Oracle Net is responsible for several connectivity issues such as : the location of the server, whatever one or more protocol is involved in the connection, and how to handle exception and interrupts.
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

In a client-server connection without middle tier, Oracle Net sits as a layer on top of the underlying network protocol (TCP/IP) and must be present on both client and server for communication. Option C describes server-side listener functionality, not client. Option D describes client-side responsibilities, not server-side.

Multiple choice technology databases

Which three features are provided by Oracle Net Services? (Choose three)

  1. Data encryption

  2. User authentication

  3. Transparent data conversion

  4. Configuration and administration mechanisms

  5. Support for multiple network transport protocols
Reveal answer Fill a bubble to check yourself
C,D,E Correct answer
Explanation

Oracle Net Services provides transparent data conversion (automatic character set and data type conversion), configuration and administration mechanisms (tools like Net Manager, listener control), and support for multiple network protocols (TCP/IP, named pipes, etc.). Option A (data encryption) and B (user authentication) are provided by Oracle Advanced Security, not core Oracle Net Services. These three features are core connectivity functions.

Multiple choice technology databases

what is true regarding the role Oracle Net provides in a client server connection with no middle tier? (Choose two)

  1. Oracle Net is layered on top of the network protocol.

  2. Oracle Net must reside on both the client and the server for peer-to-peer communication to occur.

  3. On the client side, Oracle Net is responsible for working with the listener to receive incoming connection requests.

  4. On the server side, Oracle Net is responsible for several connectivity issues such as : the location of the server, whatever one or more protocol is involved in the connection, and how to handle exception and interrupts.
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

Oracle Net sits on top of the standard network protocol (A) and must be installed on both client and server (B) for peer-to-peer communication. The listener handles incoming connections on the server side, not Oracle Net directly.

Multiple choice technology web technology

WAP is?

  1. Wireless Application Protocol

  2. Wireless Application Program

  3. Wired Application Protocol

  4. Wireless Authorization Protocol
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

WAP stands for Wireless Application Protocol. It's a technical standard for accessing information over mobile wireless networks like cellular networks.

Multiple choice technology architecture

In a data center hosting environment, before a web request is received by the Web Server, which components will first receive data packets of an end-user web request

  1. Database Server

  2. Application Server

  3. Firewall

  4. Internet Router
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation

When an end-user makes a web request, data packets first hit the Internet Router at the data center boundary, which directs traffic to the correct network. Next, the Firewall inspects and filters packets before passing allowed traffic to internal servers like the Web Server. Database and Application Servers are downstream components that receive requests only after the web server processes them.

Multiple choice technology operating systems

Which program represents the SAMBA server?

  1. sambad

  2. nfsd

  3. smbd

  4. nmbd
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

smbd (Samba Daemon) is the SAMBA server program that handles file and printer sharing services using the SMB/CIFS protocol. smbd provides the core file/printer sharing functionality. nmbd handles NetBIOS name resolution. There is no 'sambad' daemon. nfsd is for NFS, not Samba.

Multiple choice technology operating systems

lets you connect to a remote host

  1. rlogin

  2. remote

  3. login

  4. ftp
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The rlogin command allows you to connect to and log into a remote host system. It's a traditional Unix utility specifically designed for remote login access, unlike 'ftp' which is for file transfer or 'login' which is for local sessions. The name combines 'remote' and 'login'.

Multiple choice technology embedded technologies

Which of the following trace groups is not used to trace an interface:

  1. TRACE_IF

  2. TRACE_IF_STATE

  3. TRACE_IF_BUS_SEND

  4. TRACE_OBJ_STATE
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

TRACE_IF_STATE is not a recognized trace group for interface tracing in this system. Valid trace groups for monitoring interfaces and object states include TRACE_IF, TRACE_IF_BUS_SEND, and TRACE_OBJ_STATE. Therefore, the marked option is correct as the invalid group.