Computer Knowledge

Computer Networks

2,461 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 operating systems

Fill in the blanks: To create a VPN in Windows NT 4.0, you would use the ____ protocol, which has been made obsolete in modern Windows VPNs through the use of the _____ protocol and IPSec

  1. PPTP and L2TP

  2. PPoE and SMTP

  3. SMTP and PPoE

  4. L2TP and PPTP
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

PPTP (Point-to-Point Tunneling Protocol) was the VPN protocol in Windows NT 4.0. Modern Windows VPNs use L2TP (Layer 2 Tunneling Protocol) combined with IPSec for stronger encryption. PPTP is now considered obsolete due to security vulnerabilities, while L2TP/IPSec provides a more secure tunneling solution.

Multiple choice technology enterprise content management

During CM installation we have option to decide if want to use LDAP. What is full-form of LDAP?

  1. Local Directory Access Protocol

  2. Lightweight Directory Access Protocol

  3. Lotus Domino Access Protocol

  4. None of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

LDAP stands for Lightweight Directory Access Protocol, an open, vendor-neutral industry standard application protocol for accessing and managing directory information services over an IP network.

Multiple choice technology operating systems

Windows Firewall

  1. firewall.cpl

  2. winfirewall.cpl

  3. winfwall

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

In Windows, control panel applets can be launched directly via the run dialog or command prompt. The correct control panel file name to open Windows Firewall is firewall.cpl.

Multiple choice technology operating systems

WindowsFirewall

  1. firewall

  2. firewall.cpl

  3. winfirewall.cpl

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

The standard shortcut to launch the Windows Firewall control panel applet from the command line is firewall.cpl. Other options listed are invalid naming conventions.

Multiple choice technology databases

In NPS, broadcasting of a table means

  1. Sending data to all SPUs by SMP host

  2. Sending data to all SPUs by user

  3. Sending data to all SPUs by Operating system

  4. Sending data to SMP host by SPUs
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In NPS architecture, the SMP (Symmetric Multiprocessing) host controls data distribution. Broadcasting means the SMP host sends copies of the entire table to all SPUs (Snippet Processing Units) so each SPU has the complete dataset for operations like joins or aggregations.

Multiple choice technology embedded technologies

What is meant by TLB

  1. Translation Lookaside Buffer

  2. Transmit Lookuptable Buffer

  3. Translation Layer Buffer

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

TLB stands for Translation Lookaside Buffer. It is a memory cache that stores recent translations of virtual memory to physical addresses to speed up virtual address translation.

Multiple choice technology programming languages

The information needed to create a TCP socket for communication in JSP is

  1. The Local Systems IP Address

  2. Local Systems Port Number

  3. Remote System’s IPAddress

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Creating a TCP socket requires complete addressing information: local IP address (to bind to), local port number (to identify the local endpoint), and remote system's IP address (to connect to). All three pieces are essential for establishing a TCP connection between systems.

Multiple choice technology operating systems

What is the port address of DNS?

  1. 50

  2. 51

  3. 52

  4. 53
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Domain Name System (DNS) uses port 53 for its services, primarily handling queries over UDP port 53, and occasionally TCP port 53 for zone transfers or large responses. Ports 50, 51, and 52 are reserved for other protocols.

Multiple choice technology operating systems

What is the port address of DNS?

  1. 50

  2. 51

  3. 52

  4. 53
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

DNS (Domain Name System) uses port 53 for both UDP and TCP protocols. UDP is used for standard DNS queries and responses, while TCP is used for larger responses or zone transfers. Ports 50, 51, and 52 are used for other protocols (IPSec AH, ESP, etc.) and are not DNS ports.

Multiple choice technology storage

What are the types of SAN architecture types

  1. Core-edge

  2. Full-Mesh

  3. Partial-Mesh

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SAN architectures are categorized into three main types: Core-Edge (centralized switches with edge devices), Full-Mesh (every device connected to every other), and Partial-Mesh (selective connections for cost optimization). All three are valid SAN architecture patterns.

Multiple choice technology operating systems

VLAN support in AIX is based on which of the following?

  1. Layer 2 VLAN

  2. Port-based VLAN

  3. Policy-based VLAN

  4. IEEE 802.1Q VLAN
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

AIX implements VLAN support based on the IEEE 802.1Q standard, which is the industry-standard protocol for VLAN tagging on Ethernet networks. Layer 2 VLAN and port-based VLAN are general concepts but not specific AIX implementations. Policy-based VLAN is a different approach. The IEEE 802.1Q standard allows AIX to interoperate with other 802.1Q-compliant network devices.