Compute Science (M.Sc)

Q: Which of the following protocols uses both TCP and UDP?

(a) :  FTP
(b) :  SMTP
(c) :  Telnet
(d) :  DNS
(e) :  None of the above
Answer:  DNS
Explanation:  DNS uses TCP for zone exchanges between servers and UDP when a client is trying to resolve a hostname to an IP address.

Q: In Cisco's Unified Wireless Solution, what is the split-MAC architecture?

(a) :  The split-MAC architecture uses MAC addresses to create a forward/filter table and break up collision domains.
(b) :  The split-MAC architecture allows the splitting of 802.11 protocol packets between the AP and the controller to allow processing by both devices.
(c) :  The split-MAC architecture uses MAC addresses on the wireless network and IP addresses on the wired network.
(d) :  The split-MAC architecture uses MAC addresses to create a forward/filter table and break up broadcast domains.
(e) :  None of the above
Answer:  The split-MAC architecture allows the splitting of 802.11 protocol packets between the AP and the controller to allow processing by both devices.
Explanation:  The split-MAC architecture allows the splitting of 802.11 protocol packets between the Cisco LWAPP-based AP, which handles real-time portions of the protocol, and the WLAN controller, which handles those items that are not time sensitive.

Q: How often are BPDUs sent from a layer 2 device?

(a) :  Never
(b) :  Every 2 seconds
(c) :  Every 10 minutes
(d) :  Every 30 seconds
(e) :  None of the above
Answer:  Every 2 seconds
Explanation:  Every 2 seconds, BPDUs are sent out from all active bridge ports by default.

Q: Which one of the following modulation scheme is supported by WiMAX?

(a) :   binary phase shift keying modulation
(b) :   quadrature phase shift keying modulation
(c) :   quadrature amplitude modulation
(d) :   all of the mentioned
(e) :  None of the above
Answer:   all of the mentioned
Explanation:  

Q: A single packet on a data link is known as

(a) :  Path
(b) :  Frame
(c) :  Block
(d) :  Group
(e) :  None
Answer:  Frame
Explanation:  

Register now to view all Question's.

Sign in OR Sign Up


Back to top