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Sidana [21]
3 years ago
15

Which WAN technology is designed to work with a variety of commonly used layer-2 protocols and is sometimes called a layer-2.5 t

echnology because it inserts a 4-byte header that contains its own information between the layer-2 frame and the layer-3 IP packet?
Computers and Technology
1 answer:
Debora [2.8K]3 years ago
3 0

Answer: Multi protocol label switching(MPLS)

Explanation:

Multiprotocol Label Switching (MPLS) was designed with the main objective of shaping the traffic flow in term of how it can be speed up in a wide area network of an enterprise.

In MPLS each router can independently determine the next hop of a packet by looking at the destination IP address and after that it consults it routing table.  It is more efficient than traditional IP routing. The router receiving the first packet decides on the entire route of the packet throughout the network.

 MPLS is designed to work with a variety of commonly used layer-2 protocols and is sometimes called a layer-2.5 technology because it inserts a 4-byte header that contains its own information between the layer-2 frame and the layer-3 IP packet

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A _____ attack floods a network or server with service requests to prevent legitimate users' access to the system. phishing back
Ad libitum [116K]
Denial-of-service is correct 
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2 years ago
Write 'T' for true and 'F' for false statements.
asambeis [7]
1-F
2-T
3-F
4-F
5-F
6 T
7-T
3 0
2 years ago
For each of the following SQL queries, for each relation involved,list the attributes that must be examined to compute the answe
Vlada [557]

Answer:

1. E.eid ,E.hobby, E.sal, E.did

2.E.eid , E.sal, E.hobby ,E.did , D.did, D.floor ,D.dname , D.budget.

3.E.eid , E.sal, E.hobby ,E.did , D.did, D.floor ,D.dname , D.budget.

4.E.eid , D.dname

Explanation:

The attributes that are examined for the query are the attributes of the table that are mentioned in the select statement and where clause.

So according to first query we are working on all attribues of Emp table so all of the attributes of Emp table are examined.In second query we selecting all attributes of both the tables hence all attributes of both the table and same in the next query.

In fourth query though the query is not complete where clause is missing but we have eid from Emp and dname from Dept tables for sure and the attributes mentioned in where clause will also be present.

7 0
3 years ago
Your team at amazon is overseeing the design of a new high-efficiency data center at HQ2. A power grid need to be generated for
Alla [95]

Following are the python program to the given question:

from collections import defaultdict #import package

import heapq as h#import package

def primsMST(gr, st_v): # defining a method primsMST that takes two values in parameters  

   primalMST = defaultdict(set)#defining primalMST as a variable that calls defaultdict method  

   v = set([st_v])# defining a variable v that calls the set method and hold its value

   e_list = [(c, st_v, to)for to, c in gr[st_v].items()]#defining variable e_list that use loop to hold value in list

   h.heapify(e_list)# use package that holds heapify and holds its value

   while e_list:#defining while loop that checks e_list  

       c, s, e = h.heappop(e_list)#holding heapop method value in c,s,and e variable

       if e not in v:#defining if block checks e value is not in v

           v.add(e)# use add method to add value in v

           primalMST[s].add(e)#use primalMST as list that adds value in mwthod

   for nxt, c in gr[e].items():#defining for loop that uses nxt, and c variable that checks value in list

       if nxt not in v:#defining nxt variable that checks value is not in v

           h.heappush(e_list, (c, e, nxt))#add value into the heappush method

   return primalMST#return method value

connects=[['A','B',1],['B','C',4],['B','D',6],['D','E',5],['C','E',1]]#defining a list connects

my_gr=dict()#defining a variable my_gr that holds method dict() value  

for el in connects:#defining a for loop that uses el to count connects list value

   my_gr[el[0]]=dict()#use my_gr as list hold value in dict method

   my_gr[el[1]]=dict()#use my_gr as list hold value in dict method

for el in connects:#defining another for loop that uses el to count connects list

   my_gr[el[0]].update({el[1]:el[2]}) # use update method that update value in my_gr

   my_gr[el[1]].update({el[0]:el[2]})# use update method that update value in my_gr

x=dict(primsMST(my_gr, list(my_gr.keys())[0]))#defining x variable that calls dict method and  hold its value  

a=[]#defining an empty list

for k in x:#defining a for loop that uses k to hold dict method value

   for no in x[k]:#defining a loop that checks list value

       a.append([k,no,my_gr[k][no]])#use a that add value in list  

       print(a)#print list value.

Output:

Please find the attached file.

Program Explanation:

  • Import package.
  • defining a method primsMST that takes "gr and st_v" as parameters.
  • Inside the method, a primalMST as a variable is declared that calls "defaultdict" method.
  • Use the v variable that calls the set method and hold its value.
  • Defining "e_list" that uses the loop to hold value in lists, and define the heapify and holds its value.
  • In the next step, it defines a while loop checks e_list, and defines variable and hold value into the method and use another if to check value and return its value.
  • A list "connects" is declared that holds a value and defines a "my_gr" that holds "dict" method value and uses multiple for loop to print the calculated list value.

Learn more:

dictionary: brainly.in/question/14673591

List: brainly.in/question/25140412

7 0
2 years ago
What pattern is a heart-shaped pattern that captures sound from a single direction, ?from the front?
STatiana [176]

Answer:

The pickup diagram for the Cardioid (heart-shaped) microphone pattern tells you is that the microphone is most sensitive to sound coming in from the front (where the blue arrow is), and will tend to “refuse” sound coming in from the other side (the red arrow points to that part).

Explanation:

5 0
3 years ago
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