Please solve the below questions with Step by Step and proper description

These files contain the ciphertexts that you have to decrypt for the exercises in question, terminated by a newline which does not form part of the ciphertext.

Ques 1 The plaintext comes from below txt and is encoded with a transposition cipher, as follows: the plaintext is written row-wise across a certain number of columns, between 4 and 6. (You must figure out how many columns were used.) The ciphertext is formed by reading out successive columns from left to right.

NSIGUACEAROKETHTBOHOYLCATTMFRTEOHSHETAKWTRDTTNEIDRAVADHTONUEHREHVSMLYHTIBLCTTTTBESDRSSLSTSNRRORCTLHRNSUIETINTOIDHEGAITLSEROSHRMTPTNMWCCDSTREDANENNEMTFCETLAEOUENTYITOHETKWNUETEDSRNTOSTMOINGTKRELTERFDSOTAAEIOEIIETGEIOTESPLNSNOHHEEOHKRTLEAHDSITSNDVINIHNLDESLSEHEHDFUTYEEEAHEEHAYIIUOSSNSOSDSOTULPHELVDGHEHESTOIWEAAWTWHSLOYEOABHOFNTHHNENAHCADTPFNLCRNLNBTNHHIVMEDLOESHOFAEIEBUIAHDTLEWOBHIFAEAITEELARCIOCTMEILSEFBAGREASILWNFRCANDGUESSOHLOTANMEYHAAEXEEKSARNSHIOAEELSWHHRTMEGHTEESLNAOIAHENEIHLGUTEITETNEENTESDIEFTDRDMENNTAAILWHTLESOBNBTSSLSLQEDFEHEMNEAAIENRTSTHMFOTYAEROROSTUINELSSTGORTTDWOETSATSDDTENOTEAIHHIAEHEVWEADSOYCTNNYENIUZOEATARSHPOGBSUOASIOHEHOSEETMDHTCOEOIEEMSRLPLSOEYAEUNEAWENOHXNLGCIAOCTESAUENLSOWARSSCVSISEHATSYHSGANRHSTIAAIHNTDSMSTEOTIAANEHLNASEBETSTASSGTETABELTTALFAEAAISIMNAAEWOADOAOECCNDRCRIAOMEIEUNLHNSITWPIETVEUDTUANLFEIRINLNAPSU