What is the pattern of a preamble?
11110000
11111111
00000000
none of these
Correct Answer :
D. none of these
Related Questions
802.5 project standard defines Token Ring.
True.
False
What is the default subnet mask for a class B network?
255.0.0.0
255.255.0.0
255.255.255.0
255.255.192.0
The network interface layer specifies how to organize data into………………………..and Internet layer specifies the format of …………………….. Sent across an Internet.
Bits, message.
frame,packet.
packet, messge.
datagram, packet.
The special address 'THIS HOST' is referred to as
0.0.0.0
0.0.14.98
127.0.0.127
255.255.255.255
What is the default subnet mask for a class A network?
255.0.0.0
255.224.0.0
255.255.0.0
255.255.255.0
Which type of connector is used on 10Base2 networks?
SC
BNC
RJ-45
RJ-11
Which of the following is a media type that is most susceptible to interference?
Shielded twisted pair (STP)
Fiber optics
Unshielded twisted pair (UTP)
Coaxial
To communicate across a TCP/IP network, you must have a DNS server and DNS clients installed.
True.
False.
Data Transmission is not a layer in the OSI model
True.
False.
Which of the following headers does a router look at to find how to route a data packet?
Ethernet frame header
MAC address
Application header
IP header
What is the pattern of a preamble?
11110000
11111111
00000000
none of these
If user A wants to send an encrypted message to user B, the plaintext is encrypted with the public key of ………….
Skeleton
Private
Public
Symmetric
Following are the advantages of tree topology
i) Point-to-point wiring for individual segments.
ii) Supported by several hardware and software venders.
iii) Easy to install and wire
i) only
i) and ii) only
iii) only
i) ,ii) and iii)
What is the range of multicast addressing?
223.0.0.0 through 240.255.255.255
244.0.0.0 through 239.255.255.266
224.1.1.1 through 239.555.255.255
224.0.0.0 through 239.255.255.255
Which is the port used by HTTPS?
123
143
69
443
Which of the following provides the service for any casting?
IPV5
IPV6
IPV7
IPV8
What is the length of MARKER field in BGP message header?
1 byte
2 byte
16 byte
19 byte
You're configuring a dial-up connection to an ISP. Which of the following protocols is used?
PPTP
PPP
VPN
IPSec
Class C network address class supports 65,534 hosts.
True.
False.
Which of the following is also known as IP masquerading?
Fiber Distributed Data Interface (FDDI)
Network Address Translation (NAT)
Classless Inter-Domain Routing (CIDR)
None of the above
___________ is based on resources that are present within the Diffserv region.
Admission control
Packet scheduler
Packet classifier
Packet control
Which of the following pieces of equipment will receive a packet from one port and forward that packet out the one port to which the destination computer is connected?
Hub
MAU
Switch
TDR
Which of the following fields holds the packets of several protocols?
NLPID field
Pad field
UI (0x03) field
Q.922 field
Using a class B address maximum of …………………networks can be defined with up to……………………..hosts per networks.
2,097,152-------------254
16,384-----------------65,536
16,384---------------65,534
126--------------------16,777,214
Select the standard for token ring using token-passing media access.
802.2
802.3
802.5
802.11(b)
Which class does the IP address 202.119.22.31 belong to?
Class A
Class B
Class C
APIPA
T1 makes up 24 channels.
True.
False.
What is attenuation?
cable noise
cable shortage
loss of signal strength
unwanted signals on the network
A financial institution that issues the card to the purchaser is ________.
Merchant
Issuer
Acquirer payment gateway
Cardholder
In Secure Electronic Transaction, the description of the purchase and cost is contained in
________ message.
Authorization
Purchase order
Inquiry
Capture