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Q:

Can we use include ("xyz.PHP") two times in a PHP page "index.PHP"?

Answer

    Yes we can use include("xyz.php") more than one time in any page. but it create a prob when xyz.php file contain some funtions declaration then error will come for already declared function in this file else not a prob like if you want to show same content two time in page then must incude it two time not a prob

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Subject: PHP

Q:

Refer to the exhibit. Which statement describes DLCI 17?

A: DLCI 17 describes the ISDN circuit between R2 and R3.
B: DLCI 17 describes a PVC on R2. It cannot be used on R3 or R1.
C: DLCI 17 is the Layer 2 address used by R2 to describe a PVCto R3.
D: DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.

Answer

Answer : C


Explanation:


Virtual circuits (VC)s are identified by DLCIs. DLCI values typically are assigned by the Frame Relay service provider. Frame Relay DLCIs have local significance.  A DLCI identifies a VC to the equipment at an endpoint. A DLCI has no significance beyond the single link. Two devices connected by a VC may use a different DLCI value to refer to the same connection.


Virtual circuits (VC)s are identified by DLCIs. DLCI values typically are assigned by the Frame Relay service provider. Frame Relay DLCIs have local significance.  A DLCI identifies a VC to the equipment at an endpoint. A DLCI has no significance beyond the single link. Two devices connected by a VC may use a different DLCI value to refer to the same connection. - See more at: https://www.orbitco-ccna-pastquestions.com/CCNA-Past-Questions%3A-WAN.php#sthash.nWKdjylM.dpuf
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Subject: CCNA

Q:

Which two descriptions are correct about characteristics of IPv6 unicast addressing? (Choose two)

A. Global addresses start with 2000::/3.
B. Link-local addresses start with FF00::/10.
C. Link-local addresses start with FE00:/12.
D. There is only one loopback address and it is ::1.

Answer

Answer : A , D


Explanation:


An IPv6 Unicast address identifies a single network interface. The Internet Protocol delivers packets sent to a unicast address to that specific interface.

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Subject: CCNA

Q:

In practical IPv6 application, The encapsulation of IPv6 packets inside IPv4 packets is called what?

A. tunneling
B. hashing
C. routing
D. NAT

Answer

Answer : A


Explanation:


Remember,  most network is still build on IPv4 structure and IPv4 is not going away in a hurry… one of the many techniques used to migrate to IPv6 is Tunneling.


Tunneling is a method that a network built on IPv4 structure can be configured to traffic IPv6 packet simultaneously.

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Subject: CCNA

Q:

The router address 192.168.10.250 is the default gateway for both the Web Server 2 and Host 1. What is the correct subnet mask for this network?

A. 255.255.255.0
B. 255.255.255.192
C. 255.255.255.250
D. 255.255.255.252

Answer

Answer : A

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Subject: CCNA

Q:

What must be configured on the network in order for users on the Internet to view web pages located on Web Server 2?

A. On router R2, configure a default static route to the 192.168.10.0 network
B. On router r2, configure DNS to resolve the URL assigned to Web Server 2 to the 192.168.10.20 address
C. On router R1, configure NAT to translate an address on the 209.165.100.0/24 network to 192.168.10.20
D. On router R1, configure DHCP to assign a registered IP address on the 209.165.100.0/24 network to Web Server 2

Answer

Answer : C

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Subject: CCNA

Q:

An administrator issues the command

A. The PC host PC1 has connectivity with a local host
B. The PC host PC1 has connectivity with a Layer 3 device
C. The PC host PC1 has a default gateway correctly configured
D. The PC host PC1 has connectivity up to Layer 5 of the OSI model
E. The PC host PC1 has the TCP/IP protocol stack correctly installed

Answer

Answer : E


Explanation:


The “ping 127.0.0.1″ command is used to troubleshoot the local network card and the TCP/IP stack to make sure is working correctly. If an ICMP echo reply is received, that shows there are connectivity to a particular host in the network.


 

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Subject: CCNA

Q:

A default Frame Relay WAN is classified as what type of physicalnetwork?

A: broadcast point-to-multi point
B: broadcast multi-access
C: non broadcast multi-access
D: non broadcast multi-point

Answer

Answer : C


Explanation:


FrameRelay, ATM, and X.25 are non-broadcast multiple access (NBMA) networks. NBMA networks allow only data transfer from one computer to another over a VC or across a switching device. NBMA networks do not support multicast or broadcast traffic


FrameRelay, ATM, and X.25 are non-broadcast multiple access (NBMA) networks. NBMA networks allow only data transfer from one computer to another over a VC or across a switching device. NBMA networks do not support multicast or broadcast traffic - See more at: https://www.orbitco-ccna-pastquestions.com/CCNA-Past-Questions%3A-WAN.php#sthash.hb05ZKYs.dpuf
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Subject: CCNA