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Disadvantages
You typically would not use a packet filter as your only security solution for your network packets filters have two major disadvantages.
a.Low security : Packet filters do not look at eh data portion of the packets so attacks can flow right through them.
b.No advanced protocol support : Since these filters do not keep track of connection there is no way to support dynamic protocols .
Given a five station token bus LAN with station addresses of 3000, 500, 100, 70, and 50. Stations with addresses of 5000, 4000, 400, 90, and 60 are waiting to enter the ring. Assum
Time out Timers are used to protect against lost packet. Each packet must have its own logical timers since only a single packet will be retransmitted after timeou
how does the near/far effects infulence TDMA system?what happen CDMA system? what are countermeasures in TDMA system/
Components of the VPN When using VPN we incorporate many pieces of a jigsaw puzzle each piece services its own function to private the interoperation and the security nec
Q. Describe Differential Manchester? - Inversion at middle of bit interval is utilized for synchronization - Presence or else absence of additional transition at beginning o
COMPUTER NETWORKS 1. What do you mean by open system? What is the purpose of OSI model? Explain the layered architecture of OSI model. 2. Define the following terms: a) Ana
- Light source is LED (light-emitting diode) or a laser - LEDs are cheaper however not as precise (unfocused) limited to short-distance use - Lasers is able to have a narrow
Q. Show the seven layers of ISO's OSI model? Ans:- The seven layers are given below: - Application Layer - Presentation Layer - Session Layer - Transport Laye
Q. Error Detection-General? Sender transmits every data unit twice Receiver performs bit-by-bit comparison between those two versions of data. Any mismatch would
define distortion
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