Answer:
Network based coverages are LAN, WAN, MAN and WLAN
Answer:
Device Authentication
Explanation:
Device authentication allows the venue to restrict network access to authorized scanners but does not require individual ushers to sign in to the device. This seems an acceptable level of security for this environment, as the scanners are carefully controlled. Moving to any authentication scheme that requires user authentication would be unwieldy
Answer:
Required code is given below:
Explanation:
def add_to_dict(dictt, key,value):
if key in dictt.keys():
print("Error. Key already exists.")
else:
dictt[key]=value
return dictt
def remove_from_dict(dictt,key):
try:
dictt[key]
dictt.pop(key, None)
return dictt
except KeyError:
print("No such key exists in the dictionary.")
def find_key(dictt,key):
try:
value=dictt[key]
print("Value: ", value)
except KeyError:
print("Key not found.")