What is attenuation?
cable noise
cable shortage
loss of signal strength
unwanted signals on the network
Correct Answer :
C. loss of signal strength
Related Questions
Identify the topology and network type that uses a central hub with cables connected to workstations.
Physical star topology, Ethernet
Physical bus topology, Ethernet
Physical ring topology, token ring
Physical ring topology, Ethernet
Which is the port used by POP3?
69
110
143
443
In ________ routing, the tunnel creates a bridge through areas that do not support
multicast traffic.
Internet
MBONE
Border Gateway Protocol
Multicast OSPF
What is 10baseT?
specification for twisted-pair cable
specification for cable terminators
10 megawatt transceiver
10 Mhz analog transfers
ARP is defined in RFC _____ and it is a current internet standard, ________
RFC-37, STD 903
RFC-903, STD 37
RFC 826; STD 37
RFC 37; STD 826
TCP protocol is responsible for logical addressing and delivery of packets.
True.
False.
____________ was developed to support aggregation and summarization of routing
information.
Static Routing protocol
Enhanced Interior Gateway Routing Protocol (EIGRP)
Routing Information Protocol (RIP)
Border Gateway Protocol (BGP)
E-mail is an example of ………………………… mode of communication where one party can send a note to another person and the recipient need not be online to receive the e-mail.
asynchronous
synchronous
full duplex
either A or B
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
Which is the port used by POP3?
69
110
143
443
Which type of BGP message is sent by a system to notify another router of the senders existence?
Keep-alive
Notification
Open
Update
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 OSI model layer provides for encryption and decryption of data?
Data-link
Transport
Presentation
Application
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
What is the IEEE specification for Ethernet?
802.1
802.2
802.3
802.4
When collection of various computers seems a single coherent system to its client, then it is called
computer network
distributed system
both (a and (b
none of the mentioned
In flags message attribute, which of the following flag indicates that message has been
completed?
\Deleted
\Recent
\Flagged
\Draft
Twisted-pair cable uses what type of connector?
RJ-11
XT-20
RJ-45
RJ-50
Which of the following is the IEEE specification for wireless networks?
802.3
802.5
802.2
802.11b
…………………………..combines characteristics of linear bus and star topologies.
Ring topology
A hybrid topology
A tree topology
mesh topology
What is the maximum size of IP header in the UDP Datagram format?
40 bytes
50 bytes
60 bytes
70 bytes
Which layer of the OSI model does a switch operate in?
Physical
Data-link
Network
Transport
Which of the following can translate between dissimilar protocols and network types?
Hub
Repeater
Switch
Gateway
Router B receives an update from router A that indicates Net1 is two hops away. The next update from A says Net1 is five hops away. What value is entered in B's routing table for Net1? Assume the basic RIP is being used.
6
7
2
3
Which of these is a feature of hubs?
Hubs amplify the incoming signal.
Hubs understand frames, packets or headers
All lines coming into a Hub must operate at a same speed.
all of these
In TCP segment format _______indicates start of data.
RST
ACK
URG
Data Offset
TCP protocol is responsible for connection-oriented communication
True.
False.
What is attenuation?
cable noise
cable shortage
loss of signal strength
unwanted signals on the network
Which of the following is the port used by SMTP?
21
23
25
80
…………………… have a single communication channel that is shared by all the users on the network.
Point-to-point
Broadcast networks
Protocol
PAN