100 Networking Interview Questions ? Part 4 ? HeiseR Dev Zone

Part 1

Part 2

Part 3

Part 4

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Q76. What are the possible ways of data exchange?
Ans. (i) Simplex (ii) Half-duplex (iii) Full-duplex.

Q77. What are the types of Transmission media?
Ans. Signals are usually transmitted over some transmission media that are broadly classified in to two categories.
Guided Media:
These are those that provide a conduit from one device to another that include twisted-pair, coaxial cable and fiber-optic cable. A signal traveling along any of these media is directed and is contained by the physical limits of the medium. Twisted-pair and coaxial cable use metallic that accept and transport signals in the form of electrical current. Optical fiber is a glass or plastic cable that accepts and transports signals in the form of light.
Unguided Media:
This is the wireless media that transport electromagnetic waves without using a physical conductor. Signals are broadcast either through air. This is done through radio communication, satellite communication and cellular telephony.

Q78. Difference between the communication and transmission.
Ans. Transmission is a physical movement of information and concern issues like bit polarity, synchronization, clock etc.
Communication means the meaning full exchange of information between two communication media.

Q79.The Internet Control Message Protocol occurs at what layer of the seven layer model?
Ans. Network

Q80.Which protocol resolves an IP address to a MAC address?
Ans. ARP

Q81.MIDI and MPEG are examples of what layer of the OSI seven layer model?
Ans. Presentation

Q82.What is the protocol number for UDP?
Ans. 17

Q83.Which protocol is used for booting diskless workstations?
Ans. RARP

Q84.Which layer is responsible for putting 1s and 0s into a logical group?
Ans. Physical

Q85.What does ?P? mean when running a Trace?
Ans. Protocol unreachable

Q86.UDP works at which layer of the DOD model?
Ans. Host to Host

Q87.What is the default encapsulation of Netware 3.12?
Ans. 802.2

Q88.Ping uses which Internet layer protocol?
Ans. ICMP

Q89.Which switching technology can reduce the size of a broadcast domain?
Ans. VLAN

Q90.What is the first step in data encapsulation?
Ans. User information is converted into data.

Q91.What is the protocol number for TCP?
Ans. 6

Q92.What do you use the Aux port for?
Ans. Modem

Q93.Repeaters work at which layer of the OSI model?
Ans. Physical

Q94.WAN stands for which of the following?
Ans. Wide Area Network

Q95.What ISDN protocol specifies concepts, terminology, and services?
Ans. I

Q96.LAN stands for which of the following?
Ans. Local Are Network

Q97.DHCP stands for
Ans. Dynamic Host Configuration Protocol

Q98.What does the acronym ARP stand for?
Ans. Address Resolution Protocol

Q99.Which layer is responsible for identifying and establishing the availability of the intended communication partner?
Ans. Application.

Q100.Which OSI layer provides mechanical, electrical, procedural for activating, maintaining physical link?
Ans. Physical.

Related posts:

1. 100 Networking Interview Questions ? Part 3
2. 100 Networking Interview Questions ? Part 1
3. 100 Networking Interview Questions ? Part 2
4. S1 C2 Communicating over the Network
5. Interview Questions for System Engineer / Network Engineer

Source: http://heiserz.com/2012/11/29/100-networking-interview-questions-part-4/

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