When would a network administrator use L2TP?
A) To block ICMP packets from coming into a network
B) To help with packet filtering
C) When configuring a remote user's tunneling protocol
D) When configuring routing for a network
C
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In the algorithm for sorting a linked list, given below:
``` 1 i = 0 2 ptr = start 3 while ptr is not equal to NULL 4 A[ i++] = ptr 5 ptr = ptr->next 6 // sort the array with a sorting algorithm (swap addresses instead of elements); 7 // use A[ i ]->info to look at an element 8 for all i from 0 to n – 2 9 A[ i ]->next = A[ i + 1 ] 10 start = A[ 0 ] 11 A[ n – 1 ]->next = NULL ``` consider the time complexity of the sorting algorithm used on lines 6-7. Why don’t lines 1-5 and lines 8-11 contribute any more to this time complexity? A. The time complexity of lines 1-5 is O( 1 ) and the time complexity of lines 8-11 is O( 1 ). B. The time complexity of lines 1-5 is O( lg n ), and the time complexity of lines 8-11 is O( lg n ); these time complexities must be less than that of the sorting algorithm. C. Lines 1-5 and lines 8-11 are just “peripheral” lines, that have nothing to do with time complexity. D. The time complexity of the sorting algorithm must be at least O( n ), if nothing is known about the elements ahead of time; the time complexity of lines 1-5 is O( n ), and the time complexity of lines 8-11 is O( n ).
Which mobile phone generation required the wireless enhanced 9-1-1 (E9-1-1 ) to update the emergency 911 system?
A) 2nd B) 3rd C) 1st D) 4th
With ____ deployment, RADIUS servers are located at each site to perform authentication. However, instead of the authentication database being replicated to each site, it is centrally located.
A. distributed autonomous site B. distributed sites with centralized authentication and security C. single site deployment D. distributed sites and security with centralized authentication
Audition is an Adobe program you use to create vector graphics.
Answer the following statement true (T) or false (F)