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
Correct Answer :
A. 255.0.0.0
Related Questions
Which type of connector is used on 10Base2 networks?
SC
BNC
RJ-45
RJ-11
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)
In an authentication using symmetric keys, if 10 people need to communicate, we need _______ keys.
90
10
20
45
You're asked to install a Citrix MetaFrame XP server. What protocol will clients use to connect and run graphical terminal emulation to the new server?
ICA
Telnet
RAS
HTTP
What is the length of MARKER field in BGP message header?
1 byte
2 byte
16 byte
19 byte
What is the distance limitation of Cat5 UTP?
1 km
100 km
100 m
100 foot
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 protocol resolves a host's hardware address for a known IP
address?
InATMARP protocol
ATMARP protocol
InARP protocol
ARP protocol
25 is used by SMTP
True.
False.
What is the maximum length of thick Ethernet cable before a signal booster is needed?
500 feet
500 meters
1000 feet
2 miles
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
Your Web server is also configured as an FTP server. What part of the data packet will tell the server which application the data is meant for?
Port
IP address
MAC address
Frame header
…………………… have a single communication channel that is shared by all the users on the network.
Point-to-point
Broadcast networks
Protocol
PAN
802.5 project standard defines Token Ring.
True.
False
In an autonomous system with n areas, how many areas are connected to the backbone?
1
N
N+1
N-1
Class C network address class supports 65,534 hosts.
True.
False.
The key concern in the design of transmission system is -------------- and ---------------
data rate ,distance
speed, accuracy
accuracy, simplicity
distance , cost
Which layer use User Datagram Protocol (UDP) and Transmission Control Protocol (TCP)?
Network layer
Physical layer
TCP/IP transport layer
Data link layer
…………………………..combines characteristics of linear bus and star topologies.
Ring topology
A hybrid topology
A tree topology
mesh topology
Strings enclosed in _______ quotation marks indicate single tokens.
Alphanumeric
Morse code
ASCII
Binary
What is the maximum size of IP header in the UDP Datagram format?
40 bytes
50 bytes
60 bytes
70 bytes
Which of the following can be used to transfer files from a Unix server?
FTP
Telnet
IPX
Netstat
Which function is not supported by E-mail?
authentication
composition
Disposition
Displaying
Which of the following transmission media suffers more from transmission impairment?
coaxial cable
Optical fiber
twisted pair
wave guides
Select the class C IP address from the following:
122.10.8.25
170.5.88.2
191.5.26.1
207.67.112.55
Which is the port used by POP3?
69
110
143
443
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 cable type is immune to outside interference and crosstalk?
Thinnet
Thicknet
Twisted pair
Fiber optic
How many layers are there in the OSI model?
4
5
6
7
Which of the following SIP request terminates a call?
ACK
BYE
INVITE
CANCEL