What is the default port for Telnet?
23
21
25
80
Correct Answer :
A. 23
Related Questions
In TCP segment format _______indicates start of data.
RST
ACK
URG
Data Offset
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
Which of the following network topologies has the highest level of redundancy?
Bus
Star
Star
Mesh
Which of the following delivery methods works with only one source and one destination? Multicast
Multicast
Broadcast
Unicast
Any cast
____________ developed to provide a loop-free method of exchanging routing information
between autonomous systems.
Enhanced Interior Gateway Routing Protocol (EIGRP)
User Datagram Protocol (UDP)
Border Gateway Protocol (BGP)
User Datagram Protocol (UDP)
A router receives an IP packet with source IP address 130.45.3.3 and destination IP address 202.23.4.16. The router cannot find the destination IP address in its routing table. Which ICMP message should be sent?
Time stamp request
Router solicitation
Destination Unreachable
Parameter problem on a datagram
Destination physical address in ARP request is a ………………………….address.
Unicast
Broadcast
Multicast
Anycast
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
TCP protocol is responsible for logical addressing and delivery of packets.
True.
False.
You are browsing www.microsoft.com on a machine named host.contoso.org.. What is the order of domain name resolution?
Contoso.com, contoso.org, microsoft.com, com
Contoso.com, org, microsoft.org, org
Contoso.org, org, root [.], com, microsoft.com
Microsoft.com, com, org, contoso.org
Which of the following defines a family of standards for 100 Mbps fiber optic LANs that
provides the physical layer and media access control sub-layer of the data link layer, as
defined by the ISO/OSI Model?
Ethernet
IEEE 802
Fiber Distributed Data Interface (FDDI)
Point-to-Point Protocol (PPP)
Where are routing tables placed?
in network interface card
in routers memory
in server memory
in a subnets memory
____________ 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)
Your network has gotten a single class C address but has 300 computers. How can you connect them to the Internet?
Use IPX.
Implement NAT.
Use DHCP.
Use DNS.
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
What can be used in the place of DNS to resolve host names to IP addresses?
WINS
LMHosts
Hosts
DHCP
What is the distance limitation of Cat5 UTP?
1 km
100 km
100 m
100 foot
A modem is a card within a PC that converts the …………... the computer produces to ………………….. that can pass over telephone system.
Data, signal
Analog signal, digital signal
Digital signal, analog signal
signal, data
Which of the following is the port used by SMTP?
21
23
25
80
Which of the following protocol was developed to overcome limitations of Routing
Information Protocol (RIP)?
Border Gateway Protocol (BGP)
Exterior Gateway Protocol (EGP)
Enhanced Interior Gateway Routing Protocol (EIGRP)
Open Shortest Path First (OSPF)
________allows receiver to inform sender about the successful receiving of all the
segments.
SACK-permitted Option
Window scale option
Selective Acknowledgment (SACK)
Maximum segment size option
------------------- is/ are caused by the random motion of the electrons in a wire and is unavoidable.
Dispersion
Thermal noise
Delay distortion
all of these
What is the maximum distance of single-mode fiber (SMF)?
300 meters
500 meters
2km
850 meters
Which piece of equipment operates at both the data-link and network layers?
Hub
Bridge
Brouter
Router
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
You've taken your Windows 2000 laptop to a client's network and plugged it in. Your computer is configured for an IP network over 100BaseT using DHCP. You can't connect, even though the client says that DHCP is working on his 100BaseT network. What should
Use Ipconfig /release to release the old DHCP address.
Use Winipcfg and click Release to release the old DHCP address.
Use Ifconfig to initialize the NIC.
Use Tracert to determine the problem.
You've taken your Windows 2000 laptop to a client's network and plugged it in. Your computer is configured for an IP network over 100BaseT using DHCP. You can't connect, even though the client says that DHCP is working on his 100BaseT network. What should
Use Ipconfig /release to release the old DHCP address.
Use Winipcfg and click Release to release the old DHCP address.
Use Ifconfig to initialize the NIC.
Use Tracert to determine the problem.
…………………… have a single communication channel that is shared by all the users on the network.
Point-to-point
Broadcast networks
Protocol
PAN
In flags message attribute, which of the following flag indicates that message has been
completed?
\Deleted
\Recent
\Flagged
\Draft