CIS 150 Final Exam Review Sheet Multiple Choice Identify the ...

. denial-of-service d. brute force____ 111. A ____ attack occurs when a hacker tries numerous possible character combinations to find the key that willdecrypt encrypted data.a. flashing c. dictionaryb. denial-of-service d. brute force____ 112. The use of certificate authorities to associate public keys with certain users is known as ____.a. PGP c. IPSecb. PKI d. SSL____ 113. A VPN ____ authenticates VPN clients and establishes tunnels for VPN connections.a. router c. concentratorb. service d. certificate authority____ 114. RADIUS and TACACS belong to a category of protocols known as AAA (____).a. access, authorization, and accountingb. authentication, authorization, and accountingc. authentication, authorization, and authorityd. authentication, authorization, and access____ 115. ____ is the use of one network to simultaneously carry voice, video, and data communications.a. Multicasting c. Divergenceb. Unicasting d. Convergence____ 116. IPTV, videoconferencing, streaming video, and IP multicasting belong to the range of services known as____.a. voice over IP c. video over IPb. data over IP d. Web over IP____ 117. ____ messaging is a service that makes several forms of communication available from a single userinterface.a. Unified c. Diversifiedb. Instant d. Open____ 118. Using VoIP over a WAN allows an organization to avoid paying long-distance telephone charges, a benefitknown as ____.a. charge bypass c. toll bypassb. distance bypass d. easypass____ 119. In general, a(n) ____ is a private switch that accepts and interprets both analog and digital voice signals.a. IP-PBX c. Data PBXb. analog PBX d. IT-PBX____ 120. When a caller uses an IP telephone, his or her voice is immediately digitized and issued from the telephone tothe network in ____ form.a. segment c. circuitb. frame d. packet____ 121. ____ signaling functions are more limited than those performed by the protocols in the H.323 group.a. RTCP c. MEGACOb. MGC d. SIP____ 122. SIP and H.323 regulate ____ for VoIP or video-over-IP clients and servers.