  We present the temporal and spectral study of blazar PKS 0208-512, using
recent flaring activity from November 2019 to May 2020, as detected by the
Fermi-LAT observatory. The contemporaneous X-ray, optical/UV observations from
Swift-XRT/UVOT are also used. During the activity state, 2-days binned
${\gamma}$-ray lightcurve shows multiple peaks indicating sub-flares. To
understand the possible physical mechanisms behind flux enhancement, we divided
the activity state of the source into several flux-states and carried out
detailed temporal and spectral studies. Timing analysis of lightcurves suggest
that peaks of sub-flares have rise and decay time on the order of days, with
flux-doubling time $\sim$ 2-days. The 2-days binned ${\gamma}$-ray lightcurve
shows double-lognormal flux distribution. The broadband
spectral-energy-distribution (SED) for three selected flux states can be well
fitted under synchrotron, synchrotron self-Compton (SSC) and external-Compton
(EC) emission mechanisms. We obtained the physical parameters of the jet by the
SED modeling and their confidence intervals through ${\chi}^2$-statistics. Our
SED modeling results suggest that during quiescent-state, ${\gamma}$-ray
spectrum can be well explained by considering the EC-scattering of infra-red
(IR) photons from dusty-torus. However, ${\gamma}$-ray spectra corresponding to
flares demand additional target photons from broad-line-region (BLR) along with
IR. These suggest that during flares, the emission-region is close to the edge
of BLR, while for quiescent-state the emission-region is away from BLR. The
best fit results suggest that marginal increase in magnetic-field during the
flaring-episode can result in the flux enhancement. This is possibly associated
with the efficiency of particle acceleration during flaring-states as compared
to quiescent-state.
