AT&T TKT II EXAM STUDY GUIDE 2026/2027 NEWEST VERSION ASSURED SUCCESS

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AT&T TKT II EXAM STUDY GUIDE 2026/2027 NEWEST VERSION
ASSURED SUCCESS


An electron is a particle with a ______charge.
Negative




A proton is a particle with a _______ charge.
Positive




A Neutron is a particle with a _______ charge.
Neutral




As the resistance of a material increases its conductance should
therefore:
A: increase
B: decrease
C: stay the same
B: decrease




What two values are used in Binary?
0 or 1, either off or on.

,2




A bit is
0 or a 1 (no signal or a signal)




A byte is:
8 bits




4 bits or half a byte is:
A nibble




In binary; what is 10101+10101= ?
101010 (or 42 in decimal)




In binary; what is 10110+ 10111 = ?
101101 (or 45 in decimal)




In binary; what is 111- 101= ?
10 (or 2 in decimal)

, 3


In binary; what is 11011-10111=?
100 (or 4 in decimal)




What does OSI model mean?
Open systems Interconnection




How many layers are there in OSI model?
7 layers




How many layers are there in TCP/IP model?
5 layers




Name the layers of the OSI model?
Application, Presentation, Session, Transport, Network, Data Link,
Physical


Remember the phrase ;
(All, People, Seem, To, Need, Data, Processing)




What two layers are not included in the TCP/IP model? And what
layers are they in the OSI model?