Which data link layer protocol is used to carry frames across a Frame Relay link? HDLC PPP LAPD *** LAPF Frame RelayWhich of the following statements are true about a basic Frame Relay WAN connection between a customer and the service provider? (Choose two.) *** DTE devices such as routers and FRADs transmit user data. DTE devices such as Frame Relay switches…
1Why must routers be configured to specify the ISDN switch type? *** Switches use various implementations of Q.931. The IOS of most routers lacks the ability to autosense the switch. The switch must know what type of router it is communicating with. The Layer 3 connection between the terminal equipment and the ISDN switch is not standardized. 2Which of…
How did Cisco alter the HDLC encapsulation to allow a single link to carry multiple protocols? split the transmissions into multiple channels each carrying a single protocol identified the protocol in the FCS field compressed the datagrams differently for each protocol *** added a type field to identify the protocolA technician has used Telnet to gain remote access to…
1Which statements are correct regarding ATM connections? (Choose two.) uses only PVCs *** is useful for video transfers *** has data rates beyond 155 Mbps cells have 32 byte payload and a 5 byte overhead mandates single virtual circuits on a single leased line connection 2Which of the following describes a packet-switched network using connection-oriented data transfer? (Choose two.) ***…
Not : Bu cevaplari aynen gecirirseniz alacaginiz puan %80 dir.What is accomplished by segmenting a LAN with a bridge? *increase large collision domains reduce large collision domains reduce small broadcast domains increase small broadcast domains 2 How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS? 4…
1A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP for this network can only supply five public IPs. What can be used to accomplish this task? routable translation dynamic translation static translation *** port address translation 2 The LAN attached to the Ethernet interface of the Raleigh router…
1Which of the following describes the roles of devices in a WAN? (Choose three.) *** A CSU/DSU terminates a digital local loop. A modem terminates a digital local loop. A CSU/DSU terminates an analog local loop. *** A modem terminates an analog local loop. *** A router is commonly considered a DTE device. A router is commonly considered a DCE…
NAT(translations) tercümeleri bir çok çeşit amaç için kullanılabilir. İster Dinamik ister statik(durgun) olarak ayarlanabilir. Static NAT local ve global adresleri birebir eşleyebilmek için dizayn edilmiştir. Biliyorsunuz ki NAT kullanıldıgı zaman internetten birisi NAT’ın altındaki hostların ip adreslerini göremez. Ancak Statik NAT bize öyle bir imkan sunuyor ki, internetten ip sine erişilmesini istedigimiz bir hostu bu…
NAT ve PAT (giriş)NAT’ın görevi genel olarak sizin yerel networkunuzde sahip oldugunuz özel yani private IP adresinizi tercüme edip routable yani yonlendirilebilir PUBLIC ip adresine çevirmektir. Bu Teknolojiyi kullanabilmemiz için kullandığımız inter-network cihazımızın içinde NAT yazılımı olması gereklidir. NAT genelde stub networkun sınırında etkin edilir. STUB network dediğimiz şey aslında komşu network le sadece…
RFC 1918, üç farklı private adres bloğu belirlemiş durumdadır. 1 tane Class A adres, 16 Class B adres ve 256 Class C adres blogu.Bu adresler private yani özel kullanımlara ayrılmıştır. Bu IP lerle internette dolaşamazsınız. Sadece kendi yerel networkunuzde gezinebilirsiniz. Bütün routerların standartlarında bu private adresler ROUTE(yonlendirilmemek) edilmemek üzere ayarlanmıştır. Burada karşımıza çıkan 2 kavram…