Match the following:
| a | Repeater | i | Network layer |
| b | Bridge | ii | Transport layer |
| c | Routers | iii | Data link layer |
| d | Gateway | iv | Physical layer |
1
a - ii, b - i, c - iii, d - iv
2
a - iii, b - ii, c - i, d - iv
3
a - i, b - iii, c - iv, d - ii
4
a - iv, b - iii, c - i, d - ii