TDC 375-901 2016-04-07 Quiz #2 Student Name: 1. What real world Internet security threat was presented last week? ___ a. BGP router TTL=0 ICMP packet amplification ___ b. Conficker (mitigated with "sinkholes" and DNS hijacking) ___ c. IORC worm (leaked vulnerability discovered by jtk @ depaul.edu) ___ d. Vegas TCP state exhaustion 2. Which IPv4 prefix includes the largest number of addresses? ___ a. 0.0.0.0/0 (aka 0.0.0.0 with mask 0.0.0.0) ___ b. 0.0.0.0/8 (aka 0.0.0.0 with mask 255.0.0.0) ___ c. 0.0.0.0/16 (aka 0.0.0.0 with mask 255.255.0.0) ___ d. 0.0.0.0/24 (aka 0.0.0.0 with mask 255.255.255.0) 3. If a router interface is assigned 192.0.2.1/24, what is the IPv4 directed broadcast for the prefix on that interface? ___ a. 192.0.2.0 ___ b. 192.0.2.1 ___ c. 192.0.2.255 ___ d. 255.255.255.255 4. Which organization maintains the request for comments (RFC) series? ___ a. ACM ___ b. ANSI ___ c. IEEE ___ d. IETF 5. How many bits are allocated for a source address in an IPv6 header? ___ a. 32 ___ b. 64 ___ c. 128 ___ d. it varies $Id: quiz02.txt,v 1.1 2016/04/07 20:58:31 jtk Exp $