X Su thu dich Tinh huu ngh
3. Mang vien thong
Loai thu ba cua truyen phat la mang vi£n thong, la sir truyen phat giua nhieu nguoi vdi nhieu ngudi, va cung bao gdm su truyen phat giua mot ngudi vdi mot ngudi va giura mot ngudi vdi nhieu ngudi. Hon the nua, m ang vi£n thong duoc nhi^u ngudi sir dung de truy cap Internet. Cac cdng nghe cua Internet va cac dich vu video theo yeu cau (VOD) dang duoc phat trien mot cach nhanh chong va cac san phaim tuong lai cua loai truyen phat nay la Internet va dien thoai truyen hinh di dong.
N hu da ducrc dS cap, mac du mang vidn thong la sir truyen phat giura nhi6u ngudi vdi nhiSu ngudi thi no cung bao gom truyen phat giua mot ngudi vdi mot ngudi va giura mot nguoi vdi nhieu ngudi. Vi du nhu la khi mot cong ty can tuyen them nhurng cong nhan mdi va dang mot muc quang cao tren bao thi dieu nay co nghla la phat quang ba giua mot ngudi vdi nhieu ngudi. Mot cach mdi de tim kiem cong viec hay tim kiem nhung cong nhan gioi la nhung ngudi xin viec giri tai lieu ve chuyen mon va bang cap tren mang trong khi cac cong ty quang cao tren mang tat ca cac dieu kien duoc yeu cau bang cac burc thu da duoc dien. Dieu nay se giu duoc ca cho nhung ngudi tham gia duoc thong bao ve cac nhu cau hien nay va nhung vi tri duoc yeu cau.
Vi vay neu mot cong ty can mot nhan vien vdi mot qua trinh dao tao dac biet thi no co the cung cap nhirng dieu kien \ a xem tren mang ddi vdi nhung ngudi ina thoa man nhurng \ e u <_au.
Chuong 3: TruySn phat thdng tin 67 Phuong phap nay ddi chieu dir lieu cua nhi£u ngudi tren mang va cung cap nhung du lieu de cac cong ty tim kiem nhung nhan vien mdi - day la sir truySn phat giua nhi£u ngudi vdi nhiSu ngudi.
Nhung ngudi sir dung mang truyen thdng vdi nhung thong tin tren mang chac chan se chu dong hon. Di6u do ndi len rang ho chac phai nghien cun mot cach tich cuc cac thong tin cd lien quan thay vi nhan mdi birc thu mdt cach thu dong khi chung duoc mang den.
3.1. Internet
Ngudi ta da phong doan trong tuong lai mang viln thong se trd thanh mot dang quan trong nhat cua truyen phat thong tin. Su phat trien mang vi6n thong khdi dau tir nhung nam I960 va vao thdi gian dd thi no duoc sir dung hau het de ndi vdi nhirng may tmh ldn va thiet bi dau cuoi. Vdi sir phat tri£n thanh cdng cac chirc nang ciia may tmh va cac thiet bi cd lien quan, mang truyen thdng da bat dau pho bien trong khoang 10 nam trudc day, dac biet la sau nam 1990.
Hien nay mang vign thdng quan trong nhat va phd bien nhat la Internet, dung de ndi cac may tinh ca nhan don gian nhat (PC) vdi sieu may tinh phirc tap nhat - day la cau true lien ket ndi ciia m ang may tinh. Cac dich vu duoc cung cap bdi Internet bao gom thu dien tir, Netnews, Telnet, truyen tep (FTP) va trang tin toan cau (W W W ) trong dd thu dien tir va W W W la hai loai hinh duoc sir dung pho bien nhat.
Ddi vdi nhirng ngudi sir dung thudng xuyen thi W W W hau nhu da trd nen dong nghla vdi Internet. Nhirng ngudi sir dung cd the vao trang chu duoc yeu cau va chon lien ket vdi mot chu de