Data Transmission is not a layer in the OSI model
True.
False.
Correct Answer :
A. True.
Related Questions
TCP protocol is responsible for logical addressing and delivery of packets.
True.
False.
What is the IEEE specification for Ethernet?
802.1
802.2
802.3
802.4
Which piece of equipment operates at both the data-link and network layers?
Hub
Bridge
Brouter
Router
The Point-to-Point Protocol (PPP) is described in which of the following?
RFC 3390 AND RFC 3392
RFC 1661 AND RFC 1662
RFC 2490 AND RFC 2492
RFC 2225 AND RFC 2226
Which of the following SIP request terminates a call?
ACK
BYE
INVITE
CANCEL
Thick Ethernet cable uses what type of connector? Select all that apply.
RJ-45
AUI
DB-15
BNC
If the organization allocates 10 bits as subnet number, to identify a physical network, then the organization can have at the most……………. networks and each of these networks that can support only…………………...hosts.
1022 networks, 62 hosts.
62 networks, 1022 hosts.
4094 networks, 14 hosts.
14 networks, 4094 hosts.
What is the distance limitation of Cat5 UTP?
1 km
100 km
100 m
100 foot
A time exceeded message is generated if ………………………………………………….
The round trip time between hosts is close to zero.
The Time-to Live field has a zero value.
Fragments of a message do not arrive within a set time
both b & c
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
Which OSI model layer provides for encryption and decryption of data?
Data-link
Transport
Presentation
Application
The generic domain name for air transport industry is ________.
biz
air
aero
fly
Which is the port used by POP3?
69
110
143
443
________acts as source and destination for IP traffic.
Interface
Node
Host
Router
Internet Architecture Board (IAB) governs which of the following bodies?
Internet Assigned Number Authority (IANA)
Internet Research Task Force (IRTF)
Internet Engineering Task Force (IETF)
All of the above
Which of the following was initially designed as a video and audio compression standard?
MPEG-1
MPEG-2
MPEG-4
MPEG-3
In distance vector routing an active router sends out information ………………………….
Only when there is a change in its table
Only when a new host is added
At regularly scheduled intervals
Only when a new network is added
TCP protocol is responsible for connection-oriented communication
True.
False.
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
Class C network address class supports 65,534 hosts.
True.
False.
_______ Domain name corresponds to US military.
.us mili
.mili
.mil
.us
25 is used by SMTP
True.
False.
In an autonomous system with n areas, how many areas are connected to the backbone?
1
N
N+1
N-1
Which of these is an example for unguided transmission?
coaxial cable
optical fibers
wireless
twisted pairs
Pure ALOHA has a maximum throughput of -----------
16.4 %
18.4 %
7.4 %
1 %
Videoconferencing is an example for…………………… communication
Simplex
Half duplex
Full duplex
serial
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
Which of the following protocol is used by Integrated Services for signaling of the
reservation messages?
Link state protocols
Distance Vector Multicast Routing Protocol (DVMRP)
Resource Reservation Protocol (RSVP)
Static routing protocols
Which of the following protocols is described in RFC 793?
Address Resolution Protocol (ARP)
Transmission Control Protocol (TCP)
Bootstrap Protocol (BOOTP)
User Datagram Protocol (UDP)
What is the maximum length of twisted-pair cable before a signal booster is needed? Select all that apply.
25 meters
100 meters
328 feet
1000 feet