Computer Networks MCQs

Your router has the following IP address on Ethernet0: 172.16.2.1/23. Which of the following can be valid host IDs on the LAN interface attached to the router? i. 172.16.1.100 ii. 172.16.1.198 iii. 172.16.2.255 iv. 172.16.3.0

Which two statements describe the IP address 10.16.3.65/23? i. The subnet address is 10.16.3.0 255.255.254.0. ii. The lowest host address in the subnet is 10.16.2.1 255.255.254.0. iii. The last valid host address in the subnet is 10.16.2.254 255.255.254.0. iv. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.

What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?

You have a network that needs 29 subnets while maximizing the number of host addresses available on each subnet. How many bits must you borrow from the host field to provide the correct subnet mask?

If an Ethernet port on a router were assigned an IP address of 172.16.112.1/25, what would be the valid subnet address of this host?

You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?

What is the subnet id of a host with an IP address 172.16.66.0/21?

Which type of Ethernet framing is used for TCP/IP and DEC net?

Consider a situation in which you are a system administrator on a NetWare network, you are running NetWare 4.11 and you cannot communicate with your router. What is the likely problem?

NetWare IPX addressing uses a network number and a node number. Which statement is not true?

Which NetWare protocol works on layer 3–network layer—of the OSI model?

Which NetWare protocol provides link-state routing?

What does the following series of commands “Router IGRP 71 network” accomplish? 10.0.0.0 router IGRP 109 network 172.68.7.0

The “IPX delay number” command will allow an administrator to change the default settings. What are the default settings?

As a system administrator, you need to set up one Ethernet interface on the Cisco router to allow for both sap and Novell-ether encapsulations. Which set of commands will accomplish this?

What does the “IPX maximum-paths 2” command accomplish?

To prevent Service Advertisements (SAPs) from flooding a network, Cisco routers do not forward them. How are services advertised to other networks?

Novell’s implementation of RIP updates routing tables every _________ seconds.

In Novell’s use of RIP, there are two metrics used to make routing decisions. Select the correct metrics.

Which routing protocol has a maximum network diameter (hop count) of 15?

How often does a RIPv1 router broadcast its routing table by default?

Which command displays RIP routing updates?

Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?

You type debug IP rip on your router console and see that 172.16.10.0 is being advertised to you with a metric of 16. What does this mean?

Which protocol gives a full route table update every 30 seconds?

_________ is the default administrative distance of RIP.

Which statement is true regarding classless routing protocol?

Where should we use default routing?

Which statement is true regarding classless routing protocols?

What is route poisoning?

Which of the following is true regarding RIPv2?

Which of the situations might not require multiple routing protocols in a network?

Which two routing protocols can be redistributed into OSPF by a Cisco router?

Which is a reason for avoiding doing route redistribution on two routers between the same two routing domains?

Which protocol maintains neighbor adjacencies?

Which routing protocol implements the diffusing update algorithm?

In cryptography, what is cipher?

In asymmetric key cryptography, the private key is kept by __________

Which one of the following algorithm is not used in asymmetric-key cryptography?

In cryptography, the order of the letters in a message is rearranged by __________

What is data encryption standard (DES)?

Cryptanalysis is used __________

Voice privacy in GSM cellular telephone protocol is provided by _______

ElGamal encryption system is __________

Cryptographic hash function takes an arbitrary block of data and returns _________

HTTP is ________ protocol.

In the network HTTP resources are located by __________

HTTP client requests by establishing a __________ connection to a particular port on the server.

In HTTP pipelining __________

FTP server listens for connection on which port number?