Which of the following IP addresses are used by multicast devices?
Class D
Class C
Class B
Class A
Correct Answer :
A. Class D
Related Questions
The general form of the SMTP destination address is ________________.
user% remote-host@gateway-host
user@host
local-part@domain-name
None of the above
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
Select the standard for token ring using token-passing media access.
802.2
802.3
802.5
802.11(b)
How many 64-Kbps channels are used on an ISDN BRI?
1
2
3
4
The packet transmit using standard Internet Protocol(IP) throughout the Internet by
Circuit switching
Packet switching
Message switching
None of the above.
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
Twisted-pair cable uses what type of connector?
RJ-11
XT-20
RJ-45
RJ-50
Network administrator checks whether all the devices connected to the end-to-end path
are _________-enabled.
Any cast
Broadcast
Unicast
Multicast
…………………………..combines characteristics of linear bus and star topologies.
Ring topology
A hybrid topology
A tree topology
mesh topology
Which of the following SIP request terminates a call?
ACK
BYE
INVITE
CANCEL
At which layer of the OSI model do FTP, SMTP, POP3, and HTTP function?
Physical
Network
Transport
Application
25 is used by SMTP
True.
False.
What is the pattern of a preamble?
11110000
11111111
00000000
none of these
In flags message attribute, which of the following flag indicates that message has been
completed?
\Deleted
\Recent
\Flagged
\Draft
Telnet protocol uses ___________ representation for the function Synchronize.
SYC
SYNCH
SNZ
SY
Which of the following delivery methods works with only one source and one destination? Multicast
Multicast
Broadcast
Unicast
Any cast
………………….is a technique of conversion between the representation of digital data in user equipment and the corresponding signals transmitted over a communications channel.
Line coding
Demodulation
Modulation
Segmentation
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
You wish to install a 100BaseT network. What type of cabling will you use?
CAT 3 UTP
CAT 5 UTP
Thinnet
Fiber optic
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 of the following is the IEEE specification for wireless networks?
802.3
802.5
802.2
802.11b
Which type of connector is used on 10Base2 networks?
SC
BNC
RJ-45
RJ-11
___________ is based on resources that are present within the Diffserv region.
Admission control
Packet scheduler
Packet classifier
Packet control
127.0.0.1 address is reserved for internal loopback functions.
True.
False.
What are the subnet mask in dotted decimal notation for /20 networks?
255.255.252.0
255.255.255.0
255.255.254.0
255.255.240.0
In an autonomous system with n areas, how many areas are connected to the backbone?
1
N
N+1
N-1
Which class of IP addressing was not brought in much use?
Class A addresses
Class D addresses
Class B addresses
Class C addresses
UDP datagram has a header, which is of ________.
16 bytes
8-bytes
32 bytes
64 bytes
Destination physical address in ARP request is a ………………………….address.
Unicast
Broadcast
Multicast
Anycast
In the symmetric-key method of cryptography, which key is publicly known?
Encryption key only
Decryption key only
Both
None of the above