APPLICATION LAYER
DISCUSSION ON:
Introduction to DNS, SMTP, FTP, HTTP & WWW, Security: Cryptography (Public, Private Key
based),Firewalls.
MCQs
Unit I 1. The data link layer provides ________ delivery. a. host-to-host b. port-to-port c. process-to-process d. hop-to-hop 2. For n devices in a network and duplex mode transmission facility, the number of cable links required for a mesh topology is – a. n 2 b. 2n c. n(n-1)/2 d. n(n-1) 3. The layer responsible for encryption technique in OSI model is – a. network b. presentation c. data link d. session 4. Switches function in which layer(s) of OSI model? a. physical b. data link c. network d. both a and b 5. Which topology requires a multipoint connection? a. mesh b. star c. ring d. bus 6. The transport layer provides _________ delivery. a. bit-to-signal transmission b. bit synchronization c. process-to-process d. hop-to-hop 7. The topology with highest reliability is– a. bus topology b. star topology c. mesh topology d. ring topology 8. The dedicated physical layer devices are – a. Hub & Switch b. Hub & multiplexer c. ATM switch & MUX
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