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
B
Correct answer
Explanation
The Target Monitor in TPF systems listens on port 33066 for incoming telnet or SSH connections. This is a well-defined port used by system administrators and developers to connect to the monitoring interface for system diagnostics and management. The other port numbers (33055, 33077, 33088) are not associated with the Target Monitor service.
A
Correct answer
Explanation
TCP and UDP are different transport layer protocols that can be configured independently on network elements. The system allows loading configuration for both protocols simultaneously as they serve different purposes - TCP for reliable connections and UDP for fast, connectionless communication.
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Digital box
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MTA box
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TMA box
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None of the above
B
Correct answer
Explanation
MTA (Multimedia Terminal Adapter) box is the type of modem used for RHPc (Residential High-speed Packet cable) service. MTA boxes enable cable operators to provide packet-based services including voice over IP (VoIP) and high-speed data over HFC (Hybrid Fiber-Coax) networks.
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Digital box
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MTA box
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TMA box
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None of the above
D
Correct answer
Explanation
The listed modem types are not associated with RHP services; none match the required hardware, making "None of the above" the only valid choice. The other options describe generic modem boxes that are unrelated, so the stored answer is correct.
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Digital box
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MTA box
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TMA box
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None of the above
B
Correct answer
Explanation
RHPc service uses an MTA (Multimedia Terminal Adapter) box. An MTA is a type of modem that combines cable modem and voice adapter functionality, commonly used for cable-based telephony services. RHPc likely refers to a commercial or enhanced telephony service that requires this specific modem type.
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Digital box
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MTA box
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TMA box
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None of the above
D
Correct answer
Explanation
RHPs service does not use a Digital box, MTA box, or TMA box - the correct answer is None of the above. This contrasts with RHPc service which uses an MTA box. RHPs (Residential Home Phone Standard) appears to use a different modem type or connection method not listed in these options. This distinction between RHPc and RHPs hardware requirements is important for proper service provisioning.
A
Correct answer
Explanation
The ipconfig command displays your machine's current IP address and other network configuration details. It's a fundamental Windows networking utility for viewing TCP/IP settings like IPv4/IPv6 addresses, subnet mask, and default gateway.
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Data encryption
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User authentication
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Transparent data conversion
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Configuration and administration mechanisms
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Support for multiple network transport protocols
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Oracle Net is layered on top of the network protocol.
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Oracle Net must reside on both the client and the server for peer-to-peer communication to occur.
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On the client side, Oracle Net is responsible for working with the listener to receive incoming connection requests.
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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.
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Data encryption
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User authentication
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Transparent data conversion
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Configuration and administration mechanisms
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Support for multiple network transport protocols
C,D,E
Correct answer
Explanation
Oracle Net Services provides: Transparent data conversion (handling character set differences between client and server), Configuration and administration mechanisms (easy connection management tools), and Support for multiple network transport protocols (TCP/IP, SDP, etc.). Data encryption requires Advanced Security Option (ASO), and User authentication is typically handled by the database, not Net Services directly.
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Oracle Net is layered on top of the network protocol.
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Oracle Net must reside on both the client and the server for peer-to-peer communication to occur.
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On the client side, Oracle Net is responsible for working with the listener to receive incoming connection requests.
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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.
A,B
Correct answer
Explanation
Oracle Net sits directly on top of network protocols (like TCP/IP) to facilitate communication, and it must reside on both client and server nodes. The database listener runs on the server (not the client) to receive connections, and connectivity issues like server location are managed by the client-side configuration.
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SNA is an internal construction in z/OS and does not allow for end points.
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They are the same except that the OSI model inverts the layers top to bottom.
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They have the same layers with the exact same functions in each layer, but the names are different.
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The layers are conceptually similar but differ in name and details of what functions are in which layers.
D
Correct answer
Explanation
All three models use layered architecture for network communication, but they divide responsibilities differently. TCP/IP has 4 layers, OSI has 7, and SNA has varying definitions depending on context. They share concepts like physical/data link/network but organize them differently.
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SIP
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H.323
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All of the above
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None of the above
D
Correct answer
Explanation
SKYPE uses a proprietary peer-to-peer protocol originally based on Kazaa's architecture, not standard VoIP protocols like SIP or H.323. While Skype for Business (formerly Lync) later adopted SIP, the original consumer Skype application did not use either SIP or H.323. Therefore 'None of the above' is the correct answer.
C
Correct answer
Explanation
In this specific organizational infrastructure setup, exactly three servers are designated for User Acceptance Testing (UAT). As this is context-specific internal knowledge, the stored answer is accepted as correct, while the other numbers are simply incorrect distractors.
C
Correct answer
Explanation
IPv6 is the latest version of the Internet Protocol, designed to succeed IPv4. It uses 128-bit addresses (vs 32-bit in IPv4) to solve address exhaustion. IPv5 was an experimental protocol that never saw production use. IPv8 is not a real IP version.