how to connect on Dns with another dns in a domain?

i want to know how can we combine one dns server in a domain with another one?

You can also use second dns server as forwarder.

Point Dns Domain Name Server To Web Host Plan

TP-Link RT TL-R402M 1WAN/4LAN Port $16.99 TP-LINK Technologies TL-R402M Router Appliance – 5 Port TL-R402M Routers & Gateways – Wired…

LaCie 5 big Network v.2 10TB 2 x Gigabit Ethernet RAID Professional 5-Bay Network Attached Storage 301525U $1,214.99 The LaCie 5big Network 2 offers professional, reliable, central storage for instantly storing, sharing, and backing up from any PC or Mac on your network. It provides up to 10TB of storage capacity in five bays, expandable with its two USB and two eSATA ports. You can also take advantage of its two Ethernet ports to do link aggregation and get twice the performance of single Gigabit Ethernet conne…

Synology DiskStation 2-Bay (Diskless) Network Attached Storage DS211 (White) $322.99 Synology DiskStation DS211 Network Storage Server DS211 Network Attached Storage…

DNS and BIND (5th Edition) $28.18 The Domain Naming System (DNS) is a glorious thing. It takes familiar Internet network and machine names (like “amazon.com”) and converts them to Internet Protocol (IP) addresses (like “208.35.218.15″) that are meaningful to routers and therefore useful for identifying the machine you want to reach. What’s amazing is that DNS enables someone in Germany to refer, by name, to a computer in Mongolia …

Psychiatric Nursing: Contemporary Practice (Point (Lippincott Williams & Wilkins)) $30.00 The AJN Book of the Year award-winning textbook, Psychiatric Nursing: Contemporary Practice, is now in its thoroughly revised, updated Fourth Edition. Based on the biopsychosocial model of psychiatric nursing, this text provides thorough coverage of mental health promotion, assessment, and interventions in adults, families, children, adolescents, and older adults. Features include psychoeducation …

Mac OS X Lion Server For Dummies (For Dummies (Computer/Tech)) $16.19 The perfect guide to help administrators set up Apple’s Mac OS X Lion ServerWith the overwhelming popularity of the iPhone and iPad, more Macs are appearing in corporate settings. The newest version of Mac Server is the ideal way to administer a Mac network. This friendly guide explains to both Windows and Mac administrators how to set up and configure the server, including services such as iCal S…

Asus Multi-Functional Wireless Router (WL-500GP PREMIUM V2) $78.26 The WL-500gP V2 is able to prioritize your needs for Internet bandwidth. With Bandwidth-on-Demand, users can easily allocate bandwidth according to their individual needs by simply clicking on the buttons, such as voice or gaming, and assign more or less bandwidth to streamline streamlines multiple network activities (FTP, Games, P2P) to work smoothly at the same time….

Lanzar 4.3 TFT Monitor w/DVD/VCD/MP3/CD Player & AM/FM Radio (SD43MU) $204.95 DVD/ VCD/ MP3/ CD/ CD-R/ CD-RW Compatible Slid Down Detachable Front Panel Direct Connection of Alternate Audio Source Through Aux Line Input Jack (MP3/ DVD/ CD) 30 Station Preset Memory On Screen Display Title/ Time/ Chapter/ Subtitle & Angle Treble/ Bass/ Balance/ Fader/ Encoder Volume AM/ FM-MPX 2 Band Radio 4.3″ Digital TFT Monitor With Touch Screen 4 x 60Watts w/ Fan SUB-Woofer Remote Control…