Explain what happens when a computer is configured to automatically obtain an IP address.
What will be an ideal response?
When a computer that is configured to automatically obtain an IP address is switched on, it tries to find a DHCP server to obtain an IP address. A DHCP server is a server that uses software and DHCP to automatically assign or lease an IP address from a pool of possible addresses. If there is no DHCP server available, the computer automatically assigns itself an IP address from the reserved range of 169.254.0.1 to 169.254.255.254 and a subnet mask of 255.255.0.0. The computer is not able to assign itself a default gateway or the IP address for a Windows Internet Naming Service (WINS) or Domain Name System (DNS) server. The main problem with automatic configuration is that the computer can only communicate with other computers on the same network that are also automatically configured.
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Discuss the potential advantages and drawbacks in the use of an X.500 directory service in place of DNS and the Internet mail delivery programs. Sketch the design of a mail delivery system for an internetwork in which all mail users and mail hosts are registered in an X.500 database.
What will be an ideal response?
Match each term with the correct statement below.
A. RF interference that affects the entire frequency band, such as the entire 2.4-GHz band B. any undesirable electrical energy emitted within the frequency range dedicated to RF transmissions C. a WLAN that uses a reduced power output from the AP; results in a smaller coverage area but can allow for increased performance due to channel reuse D. RF interference that covers all bands of the RF spectrum E. wireless networks that are used in areas in which large numbers of device are clustered close together F. an undesirable electronic disturbance, either manmade or natural, which causes an undesirable degrading in the performance of electrical equipment G. an IP address that begins with the IP range 169.254.x.x and is assigned if a device cannot receive a valid IP H. RF interference that is usually generated by television, radio, and satellite transmitters I. transmission problem involving two wireless devices, in which the wireless device closest to the AP transmits at a higher power than the other, more distant device, thereby overwhelming the weaker signal from the distant device J. the area between two APs in which a wireless device begins to search for a new AP with which to associate
What objects will not use the caption instead of the field names?
A) Forms B) Reports C) Datasheets D) Macros
Match each item with a statement below.
A. An amateur cracker that uses programs and scripts written by other people to infringe upon a computer network system's integrity B. Someone who breaks into computer networks without authorization and with malicious intent C. A general term for any software that intentionally monitors and records a user's computer and/or Internet activities D. A form of malware that disguises itself and its harmful code E. An individual or groups of individuals that waver between the classification of a hacker and a cracker F. A general term for software that uses typical malware intrusion techniques to obtain marketing data or advertise a product or service G. A hacker that uses extensive experience and knowledge to test systems and provide security consultation to others, but poses no threat to network systems H. Self-replicating malware that is able to harness the power of networks and use this power in its attacks against the networks I. Hackers and crackers who use their extensive experience and skill to use networks to share their ideologies regarding controversial social, political, and economic topics