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frOver Blogadmin@dzblog.com2008-12-03<![CDATA[manque]]>
http://suntech.dzblog.com/article-158368.html
Examine the graphic with current configurations. The New York Offices of ABC Company recently upgraded the computers in the administrative office. Shortly after the upgrade, Host A in the clerical office failed and was replaced with one of the retired administrative office computers. However, the computer can not access the company network in the new location. What is the likely cause of this network access issue for Host A?
MAC address incorrectly entered
*default gateway incorrectly entered
subnet mask incorrectly entered
IP address incorrectly entered
-------------------------------------------------------------------- 6 Two peer hosts are running applications that exchange data using UDP. During the current session, a datagram fails to arrive at the destination. What is true concerning the retransmission of the datagram?
*Datagram retransmission occurs when the retransmission timer expires in the source host.
Datagram retransmission occurs when the retransmission timer expires in the destination host.
Datagram retransmission is controlled by the application layer protocol.
Datagram retransmission involves only the data with sequence numbers equal to or higher than the sequence number of the current datagram. -------------------------------------------------------------------- 7 What is significant about the ping 127.0.0.1 command?
*It verifies the operation of the TCP/IP protocol stack on a host and is called an internal loopback test.
It verifies connection to the remote host with the IP address 127.0.0.1.
It verifies whether the router that connects the local network to other networks can be reached.
It verifies the route packets take between the local host and the host with the IP address 127.0.0.1. 12 Refer to the graphic. What must be configured on Host A to allow it communicate with the e-mail server? (Choose three.)
IP address *
subnet mask *
default gateway *
router name
switch name
NetBIOS name address
------------------------------------------------------------------------------------ 21 Which devices shown in the graphic must have a MAC address?
only PC
only router
PC and router
PC, hub, and router
*PC, printer, and router ----------------------------------------------------------------------- 23 Which of the following is the decimal representation of the binary number 11010011?
203
204
*211
212 25-Determine the number of useable networks and hosts for the IP address 192.168.50.0/27
4 networks / 62 hosts
6 networks / 64 hosts
32 networks / 8 hosts
*6 networks / 30 hosts
8 networks / 32 hosts
2 networks / 8 hosts
-------------------------------------------------------------------- 30 Which of the following describes latency?
the noise generated from outside a cable
the degradation of a signal as it travels along the media
the time required for a NIC to place a frame on the network media
*the delay between the time a frame leaves its source device and reaches its destination ------------------------------------------- 31 Which of the following is the binary representation of the decimal number 111?
*01101111
01111101
11110111
11101101 -------------------------------------------------------------------- 34 Which of the following commands could be used on a Windows-based computer to view the current IP configuration of the system? (Choose two.)
configip
ifconfig
*ipconfig
*winipcfg
winipconfig -------------------------------------------------------------------- 37 What information can be determined from the MAC addresses of PC1, PC2, and PC3, as shown in the graphic? (Choose two.)
PC1 and PC2 NICs need to be replaced because they have the same OUI identifier.
PC2 and PC3 NICs need to be replaced because they have different OUI identifiers.
*PC1 and PC2 NICs are from the same vendor.
PC1 and PC3 NICs need to be replaced because they have the same vendor-assigned address.
*PC2 and PC3 NICs are from different vendors.
PC2 and PC3 NICs are from the same vendor. -------------------------------------------------------------------- 44 which of the following networking devices divide a network into separate collision domains? (Choose two.)