Networking MCQ
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1. Introduction to Computer Networks |
1. Introduction to Computer Networks
1. Computer Networks- Goals and applications – Business Application, Home Application, Mobile User, Social Issues
2. Network Hardware - Broadcast and point-to-point
3. topologies – star, bus, mesh, ring etc.
4. Network Types-LAN, MAN, WAN, Wireless Networks, Home Networks, Internetwork
5. Data Communication-Definition, components, data representation, Data Flow
6. Protocols & Standards De facto and De jure standard,
7. Network Software - Protocol Hierarchies -layers, protocols, peers, interfaces
Network architecture, protocol stack, Design issues of the layers –addressing, error control, flow control, multiplexing and demultiplexing, routing Connection-oriented and connectionless service, Service Primitives – listen, connect, receive, send, disconnect and Berkley Socket ,the relationships of services to protocols. |
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2. Network Models |
2. Network Models 1. OSI Reference Model - Functionality of each layer
2. TCP/IP Reference Model, Comparison of OSI and TCP/IP model
3. TCP/IP Protocol Suite
4. Addressing - Physical, Logical and Port addresses
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3. Transmission Media |
3. Transmission Media
1. Twisted pair cable – UTP Vs STP, categories connectors & applications , Coaxial cable – standards, connectors & applications Fiber Optic cable – propagation modes, connectors & applications(No diagrams will be asked in examination)
2. Unguided Media – Wireless- Radio Waves,-
Microwaves, Infrared
3. Light wave transmission
4. Types of cabling and Networking Tool - CAT5 and CAT6 Cable Color Code, Crossover Cabling and Straight Through Cable, Crimping and Line testing tool
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4. The Physical Layer |
4. The Physical Layer
1. Analog and Digital data, Analog and Digital signals,
Periodic & Non-periodic signals
Digital Signals- Bit rate, bit length, baseband
Transmission (no cases)
2. Transmission Impairments –attenuation, distortion
and noise, Data Rate Limits – Noiseless channel:
Nyquist’s bit rate,noisy channel : Shannon’s law
(Enough problems should be covered on every topic.)
3. Performance of the Network Bandwidth, Throughput,
Latency(Delay), Bandwidth –Delay Product, Jitter
4. Line Coding Characteristics, Line Coding Schemes –
Unipolar - NRZ, Polar-NRZ-I, NRZ-L, RZ,
Manchester and Differential Manchester
(Enough problems should be covered on every topic.)
5. Transmission Modes, Parallel Transmission and
Serial Transmission –Asynchronous and Synchronous and Isochronous
6. Trunks & Multiplexing FDM and TDM
7. Switching - Circuit Switching, Message Switching and Packet Switching, comparison of circuit & packet switching
8. Physical Layer Devices Repeaters, Hubs- active hub Passive hub
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5. The Data Link Layer |
5. The Data Link Layer
1. Design Issues – Services provided to the Network Layer , Framing – Concept, Methods - Character Count, Flag bytes with Byte Stuffing, Starting & ending Flags with Bit Stuffing and Physical Layer Coding Violations, Error Control, Flow Control
2. Error detection code CRC (Enough problems should be covered on every topic.)
3. Data Link Layer Protocols –Noiseless channel -A Simplex, Stop-And-Wait protocol, noisy channel –stop & wait, ARR, Pipelining, Go –back –N ARR & ARQ, selective repeat ARR(No examples & no algorithms)
4. Sliding Window Protocols Piggybacking-Need, Advantages/Disadvantages, 1-bit sliding window protocols,
5. Data Link Layer Protocols-HDLC – frame format, all frame types PPP – Use, Frame Format, Use of PPP in the Internet
6. Data Link Layer Devices - Bridges – Filtering, Transparent Bridges, spanning tree and Source Routing Bridges, Bridges Connecting Different LANs
7. Remote bridges
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6. The Medium Access Sublayer |
6. The Medium Access Sublayer
1. Random Access Protocols ALOHA – pure and slotted
2. CSMA – 1-persistent, p-persistent and non-persistent CSMA/CD,CSMA/CA
3. Controlled Access Reservation, Polling and Token Passing
4. Channelization FDMA, TDMA and CDMA-Analogy, Idea, Chips, Data Representation, Encoding and Decoding, Signal Level, Sequence Generation(Enough problems should be covered on every topic.)
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7. Wired LANs |
7. Wired LANs
1. IEEE Standards Data Link Layer, Physical Layer
2. Standard Ethernet MAC Sublayer – Frame Format, Frame Length, Addressing, Access Method
3. Physical Layer – Encoding and Decoding, 10Base5, 10Base2, 10Base-T, 10Base-F,
4. Changes In The Standard – Bridged Ethernet, Switched Ethernet, Full Duplex Ethernet
5. Fast Ethernet – Goals, MAC Sublayer,Topology, Implementation
6. Gigabit Ethernet – goals, MAC Sublayer, Topology, Implementation
7. Ten-Gigabit Ethernet – goals, MAC Sublayer, Physical Layer
8. Backbone Networks Bus Backbone, Star Backbone, Connecting Remote LANs
9. Virtual LANs Membership, Configuration, Communication between Switches, IEEE standards Advantages
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8. Wireless LAN |
8. Wireless LAN
1. IEEE 802.11 Architecture – Basic Service Set, Extended Service Set, Station Types
2. Bluetooth Architecture – Piconet, scatternet
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9. The Network Layer |
9. The Network Layer
1. Design Issues Store-and-forward packet switching, Services Provided to the Transport Layer, Implementation of Connectionless Service, Implementation of Connection Oriented Service, Comparison of Virtual Circuit and Datagram subnets
2. Logical Addressing IPV4 Addresses – Address Space, Notations, Classful Addressing,Subnetting, Supernetting,Classless Addressing, Network Address Translation(NAT), (Enough problems should be covered on Addressing),
3. IPV4 Protocol Datagram Format, Fragmentation, Checksum, Options
4. Routing Properties of routing algorithm, Comparison of Adaptive and Non- Adaptive Routing Algorithms
5. Congestion Control – Definition, Factors of Congestion, Difference between congestion control and flow control, General Principles of Congestion Control, Congestion Prevention Policies
6. Network Layer Devices –Routers
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10. Address Mapping |
10. Address Mapping
1. Protocol(ARP)-Cache Memory, Packet Format, Encapsulation, Operation, Four Different Cases, Proxy ARP, RARP , BOOTP, DHCP – Static Address Allocation, Dynamic Address Allocation, Manual and automatic Configuration
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11. The Transport Layer |
11. The Transport Layer
1. Process-to-Process Delivery Client Server Paradigm, Multiplexing and De-multiplexing, Connectionless Vs Connection-Oriented Service, Reliable Vs Unreliable
2. User Datagram Protocol(UDP) Datagram Format, Checksum, UDP operations, Use of UDP
3. Transmission Control Protocol (TCP) TCP Services – Process to-Process Communication, Stream Delivery Service, sending and Receiving Buffers, Segments, Full –Duplex Communication, Connection oriented service, Reliable service
4. TCP Features –Numbering System, Byte Number, Sequence Number, Acknowledgement Number, Flow Control, Error Control, Congestion Control
5. TCP Segment – Format
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12. The Application Layer |
12. The Application Layer
1. Domain Name System (DNS) Name Space, Domain, Name Space, Distribution of Name Space, DNS in the Internet, Resolution
2. E-MAIL Architecture, User Agent, Message Transfer Agent-SMTP, Message Access Agent-POP3, IMAP4, Web Based Mail
3. File Transfer Protocol (FTP) Communication over control connection, Communication over Data Connection, Anonymous FTP
4. WWW Architecture, WEB Documents
5. HTTP - HTTP Transaction, Persistent and Non persistent Connection, Proxy Server
6. Devices- Gateways –Transport & Application Gateways
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13. Network Security |
13. Network Security
1. Introduction – Security Services- Message-Confidentiality, Integrity, Authentication, Non repudiation. Entity (User)- Authentication.
2. Message confidentiality –Confidentiality with Asymmetric-Key Cryptography, Confidentiality with Symmetric-Key Cryptography
3. Cryptography Encryption Model, Substitution Cipher and Transposition Cipher (Problems should be covered.)
4. Two Fundamental Cryptographic Principles
5. Communication Security Firewalls
6. Web Security Threats, Secure Naming,DNS Spoofing, Secure DNS, Self Certifying names
7. Mobile Code Security Java Applet Security, Activex, JavaScript, Viruses
8. Social Issues Privacy, Anonymous Remailers, Freedom of Speech, Stegnography, Copyright
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