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Question
(a) Draw a typical hybrid star-ring topology paying attention to how the clients and switching hubs are connected.
(b) State 3 main differences between a router and a layer 2 switch.
(c) (i) List the four functional areas of Network Management. (ii) What are the two parameters monitored by a Network Management System?
(d) Explain the Building Block Design process.
(e) In terms of Performance, assuming a network with an MTBF of 2000 Hours and MTTR of 12 Hours:
(i) What do you understand by MTTR? (ii) Calculate the percentage Availability of the network. (iii) Calculate the percentage Reliability of such a network over a one-year period. (iv) What does this Reliability value mean?
(f) List the three different Management Information Base System (MIBS) modules available, giving a brief description of each.
(g) (i) Name the two methods by which a Network Management System can obtain information from SNMP?
(ii) Name three pieces of information that is included in a SNMP Trap?
QUESTION (a) (i) Describe Phishing attacks. (ii) Distinguish between Phishing and Spear Phishing attacks. (b) Describe two instances where an attacker sniffing on a netwo
Unguided Media This is the wireless media that transfer electromagnetic waves without using a physical media. Waves are broadcast through the air. This is performing through r
LOCALITY OF REFERENCE PRINCIPLE: Principle of "Locality of Reference" use to predict computer interaction patterns. There are two patterns shown as follows: a) Spatial loca
You see two IP addresses. The IP address 192.168.58.130 is the one of Bt4. The IP address 192.168.58.133 has ports 135 and 445 open; which indicates that it is a Windows machine. S
USING ICMP TO TEST REACHABILITY: ICMP can also be used to test several tools. An Internet host A, is reachable from another host B, if data packets can be send from A to B. P
Example : Softbank – theft of consumer data for extortion Softbank of Japan offers broadband Internet services across Japan through 2 subsidiaries – Yahoo! BB and Softbank BB. I
what are the participant of marketing channal?
Short term Scheduler function , also shown as a dispatcher runs most frequently, and creates the finest-grained decision of which program could run next. This scheduler is called
Belady's Anomaly Also known FIFO anomaly. Generally, on raising the number of frames given to a process' virtual storage, the program execution is faster, because lesser page
COLLISION DETECTION The signals from two devices will interfere with each other and the overlapping of frames is known a collision. It does not cause to the hardware but data
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