Match the following: 
Let us match each layer from Group-1 to its corresponding data unit in Group-2:
(A) Physical layer uses transmission units of individual bits: \(\Rightarrow\) e. Bit
(B) Data Link layer works with frames for error detection and framing: \(\Rightarrow\) d. Frame
(C) Network layer handles packets, often called datagrams: \(\Rightarrow\) b. Datagram
(D) Transport layer manages segments in protocols like TCP: \(\Rightarrow\) a. Segment
(E) Application layer deals with complete messages as seen by applications: \(\Rightarrow\) c. Message
The supply voltage magnitude \( |V| \) of the circuit shown below is ____ .
A two-port network is defined by the relation
\(\text{I}_1 = 5V_1 + 3V_2 \)
\(\text{I}_2 = 2V_1 - 7V_2 \)
The value of \( Z_{12} \) is: