INFO2006 1 Network Architecture & Models

Question 1

TCP/IP

Answer 1

Transmission Control Protocol over Internet Protocol

Question 2

Application Layer Protocols

Answer 2

HTTP - hyper text transfer protocol
SMTP - simple mail transfer protocol
RTP - real-time transfer protocol
DNS - domain name system

Question 3

Trasnport Layer Protocols

Answer 3

TCP - Transmission Control Protocol

UDP - User Datagram Protocol

Question 4

Internet Layer Protocols

Answer 4

IP - Internet Protocol

ICMP - Internet Control Message Protocol

Question 5

Link Layer Protocols

Answer 5

(A)DSL - (Asymmetric) Digital Subscriber Line (orig. loop)
SONET - Synchronous Optical Networking
802.11 - Set of physical layer standards for implementing WLAN
Ethernet - comp networking technologies for LANs

Question 6

Data encoding
Data-Voltage-Data
NRZ - Non Return to Zero

Answer 6

NRZ
Used widely, particularly in 
RS-232-C interface
Simplest encoding possible
Data '0': negative voltage
Data '1': positive voltage

Question 7

OSI | TCP/IP | Tanenbaum

Answer 7

OSI TCP Tanenbaum

7. Applic. Applic. Application
8. Presentation n/a n/a
9. Session n/a n/a
10. Transport Trans. Transport
11. Network Internet Network
12. Data link Link Link
13. Physical n/a Physical

Question 8

RS-232-C

Recommended standard

Answer 8

Very simple protocol used to transfer a single character (8 bits) between computer terminal and a computer.