Define the integrity property of reliable communication and list all the possible threats to integrity from users and from system components. What measures can be taken to ensure the integrity property in the face of each of these sources of threats
What will be an ideal response?
Integrity - the message received is identical to the one sent and no messages are delivered twice. threats from users:
• injecting spurious messages, replaying old messages, altering messages during transmission threats from system components:
• messages may get corrupted en route
• messages may be duplicated by communication protocols that retransmit messages.
For threats from users - they might just say use secure channels. They may be able to suggest the use of authentication techniques and nonces.
For threats from system components. Checksums to detect corrupted messages - but then we get a validity problem (dropped message). Duplicated messages can be detected if sequence numbers are attached to messages.
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Suppose you want to program behavior that repeats as long as some condition does not occur. To do this, you could use a statement with the following format: ____.
A. doWHILE (true) B. while (!true) C. if (NOT condition) D. while (&& false)
Must throwing an exception cause program termination?
What will be an ideal response?
WWW stands for ________
Fill in the blank(s) with correct word
Which Cisco IOS command is used to configure a device to use an SNMP manager (NMS) located at the 192.168.100.100 IP address, using version 2c, Informs (versus Traps), and using a community of ThIsCoMmuNiTy?
A) snmp-server manager 192.168.100.100 informs 2c ThIsCoMmunIty B) snmp-server host 192.168.100.100 informs version 2c ThIsCoMmunIty C) snmp-server host 192.168.100.100 version 2c ThIsCoMmunIty D) snmp-server manager 192.168.100.100 2c ThIsCoMmunIty